Part 21 Report - 1996-643

ACCESSION #: 9610220158 NOTE: This text document was processed from a scanned version or an electronic submittal and has been processed as received. Some tables, figures, strikeouts, redlines, and enclosures may not have been included with this submittal, or have been omitted due to ASCII text conversion limitations. In order to view this document in its entirety, you may wish to use the NUDOCS microfiche in addition to the electronic text. Information & Support Services P.O. Box 3707 Seattle, WA 98124-2207 October 11, 1996 G-1151-SJA-96-629 Document Control Desk United States Nuclear Regulatory Commission Washington, D.C. 20555 Reference: a) Boeing Letter G-1151-RSO-92-365 dated August 31, 1992; R. S. Orr to the NRC Operations Center b) NRC Letter Docket No. 99901227 dated August 12, 1992; L. J. Norrholm to R. S. Orr; Subject: Response to 10 CFR 21 Inquiry Dear Sir or Madam: In accordance with the reference correspondence and 10 CFR 21, Boeing is sending the NRC the attached error notice(s) received from our former software suppliers. Because of unknown current addresses, the following former customers were not notified: Reactor Controls, Inc. Echo Energy Consultants, Inc. Nuclear Applications and Systems Analysis Company (Japan) Nuclear Power Services Tenera Engineering Services Gibbs & Hill, Inc. Holtec International Error notices have been sent to our other former customers. Very truly yours, Sandra J. Andrews Nuclear Administrator Phone: (206) 865-6248 FAX: (206) 865-4851 Mail Stop: 7A-33, or e-mail: Sandra.Andrews@PSS.Boeing.com Enclosure(s): ANSYS Class3 Error Reports 96-33, 96-34, 96-35, 96-36, 96- 37 and 96-38. ANSYS QA Notice QA96-06 ANSYS Class3 Error Reports 92-25R1, 93-03R1, 93-33R1, 94- 68R2, 95-27R1, 95-39R1 and 95-49R1 Revised Class3 Error Report Summary for Rev 5.1 ANSYS Class3 Error Reports 96-39, 96-40 and 96-41 ANSYS QA Notices QA96-07 and QA96-08 Class3 Error Report Summary for Rev 5.2 and Release 5.3 ANSYS, Inc. 201 Johnson Road Telephone 412.746.3304 Houston, PA 15342-1300 Facsimile 412.746.9494 August 12, 1996 Dear Class3 Error Recipient: Enclosed you will find ANSYS Class3 Error Reports 96-33, 96-34, 96- 35, 96-36, 96-37 and 96-38. Also enclosed is ANSYS QA Notice QA96-06 which has been issued to clarify the program documentation on the operation of the KUSE command. Some past Class3 errors incorrectly suggested that using KUSE,-1 was a way to avoid the errors reported. The reports affected by this have been revised and are also enclosed as 92-25 R1, 93-03 R1, 93-33 R1, and 94-68 R2. Finally, attached are Class3 Error Reports 95-27 R1, 95-39 R1 and 95-49 R1. These reports have been revised and reissued to update the versions containing the errors and corrections. I have also attached a newly revised Class3 Error Summary Report for Rev. 5.1. An error appeared in the report dated 5/31/96. Please discard that copy and use the enclosed. Sincerely, ANSYS, Inc. William J. Bryan Quality Assurance Manager ANSYS [Registered Trademark] is registered trademark of SAS IP ANSYS Revision Identifier Description ANSYS revision identifiers consist of a major revision level, a minor revision level, a correction level, and occasionally a special version level. An example of how this is constructed is shown below: 5.0A--10 major revision level special version identifier minor revision level correction level Major revision level changes indicate that new features have been added to the program and that some level of program architecture change and/or file structure has occurred. Minor revision level changes also indicate that new features have been added to the program, but files are upwardly compatible. All known error fixes are included in both minor and major revisions. Changes to the correction level indicate that it is primarily an error correction release. Special version identifiers indicate that one or more additional minor changes have been made to the program, normally to circumvent an error. Special versions are not general releases to all ANSYS licensees, since they typically represent errors occurring only on one system, a subset of our customers who have specific graphics devices, etc. The ANSYS revision identifier(s) shown under "corrected in" on the front side of this Class3 Error Report indicates the first possible revision that could contain the correction. A major program change needed to fix an error can dictate that the next minor or major revision will contain the fix rather than the next correction level. For example, when errors were being reported while Rev. 4.3A was the latest production version, most Class3 error reports indicated that 4.313 was the "corrected in" revision. Others requiring significant code restructuring were reported as fixed in 4.4. Rev. 4.3B was never released, but Rev. 4.4 contained all error corrections noted as fixed in 4.3B. An identifier indicated under "corrected in" does not guarantee that a general release of that revision of ANSYS will occur. It does indicate that the correction is known and implemented in the coding that would be part of that general release. Equivalent Product Identifiers The ANSYS family of component products occasionally undergoes name changes between revisions and/or changes in the functionality of derived products (such as ANSYS-PC/LINEAR). To minimize the potential for confusion in these areas, the important product name equivalences (similar program functionality and error content) are listed below. ANSYS/ED contains all errors shown for the full ANSYS product, starting at Rev. 5.0, and beyond, unless otherwise noted. PC/LINEAR is equivalent to WS/LINEAR at Rev. 4.4A, and ANSYS/LINEAR starting at Rev. 5.0 and ANSYS/LinearPlus starting at Rev. 5.0A. PC/THERMAL is equivalent to WS/THERMAL at Rev. 4.4A, and ANSYS/THERMAL starting at Rev. 5.0 PREPPOST contains relevant errors the full ANSYS product, for shown for included pre- and post- processing functionality PC/MAGNETIC is equivalent to ANSYS/Emag starting at Rev. 5.0A ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 96-33 KEYWORDS: ASUM VSUM DESCRIPTION OF ERROR: The ASUM and VSUM commands may produce erroneous results due to poor tesselation (tesselation is a triangular "mesh" of the surface used for visualizing it) of the model surface. We have observed this behavior when there is a sharp change in angle for the model boundary. FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.0 Release 5.3 Component Products Rev. 5.0A Component Products Release 5.3 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: In order to ascertain the quality of tesselation (and thus the quality of the ASUM or VSUM results) for an area or volume, check the areas and volumes from ASUM and VSUM commands with respect to the total finite element areas and volumes (in POST1, use commands ETABLE,, VOLU and SSUM) resulting from an acceptable mesh of that entity. COMMENTS: 1. The corrected version gives accurate results for a valid tesselation even if its quality is poor. 2. If the tesselation is invalid, but cannot be distinguished from the plot of areas or volumes, the corrected version calculates the best approximation and issues the following warning message: Poor tesselation for area "area number" resulted in poor surface area approximation. Better area measure can be obtained from the elements of a refined mesh. AUTHOR/CORRECTOR: DATE: August 7, 1996 Hasan Ahmad REVIEWED BY QA: DATE: August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 96-34 KEYWORDS: APDL ARNODE DESCRIPTION OF ERROR: The ANSYS Parametric Design Language (APDL) function ARNODE does not return the correct area for mid-side node quadrilaterals which have been reduced to triangles by duplicating nodes K, L, and O. The calculated area is low by 9/11ths. SHELL93 is such an element. FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.1 Release 5.3 Component Products Rev. 5.2 Components Products Rev. 5.3 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: COMMENTS: AUTHOR/CORRECTOR: DATE: August 7, 1996 John Swanson REVIEWED BY QA: DATE: August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 Mark C. Imgrund _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 96-35 KEYWORDS: EMAG ELEM53 PLANE53 CIRCUIT DESCRIPTION OF ERROR: For circuit-fed axisymmetric massive conductor elements (PLANE53, KEYOPT(1)=4), the calculation of JS in the SMISC record and JT in the NMISC record are incorrect. This will lead to an incorrect calculation of total current (CURR2D command macro), power loss (POWERH command macro), and the coupled-field joule heat generation rate input (LDREAD command). FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.2 Release 5.3 ANSYS/Emag Rev. 5.2 ANSYS/Emag Release 5.3 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: The sign on the source current density (JS) is incorrect. This leads to an incorrect calculation of the total current density (JT). Use the ETABLE command in POST1 to store values of JT, JS and JE. Change the sign of the JS results (SADD command), and then recalculate JT (JT=JS+JE). COMMENTS: AUTHOR/CORRECTOR: DATE: August 7, 1996 Jian-She Wang REVIEWED BY QA: DATE: August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to ail revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 96-36 KEYWORDS: FLOTRAN ELEM141 ELEM142 RESULTS FILE DENSITY DESCRIPTION OF ERROR: In flow analyses, for nodes on solid material (MAT>1) elements that are connected only to solid material nodes, using elements FLUID141 and FLUID142, documentation fails to specify that the quantity stored in the results file position for density is actually the product of the density and the specific heat. FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.1 Release 5.3 User's Guide ANSYS/FLOTRAN Rev. 5.1 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: COMMENTS: The method of storing solid material property information in the results file for FLUID141 and 142 elements may be changed in the next release to allow the density and the specific heat to be ally displayed during post processing. AUTHOR/CORRECTOR: DATE: August 7, 1996 Mike Normansell REVIEWED BY QA: DATE: August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 96-37 KEYWORDS: SFA BOUNDARY CONDITIONS SOLID MODEL TRANSFER DESCRIPTION OF ERROR: If a keypoint number is equal to or greater than 1024, boundary conditions applied to the surface of a 3-D solid model volume (SFA command) may not transfer to the underlying elements correctly. FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.2 Release 5.3 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: Verify that all area surface loads (SFA) have transferred correctly (by listing or plotting), or use element surface load specifications (SFE command). COMMENTS: Solid model surface loads are transferred by the SFTRAN or SBCTRAN commands or they are transferred automatically when the SOLVE command is executed. In all error cases that we have seen, no loads have transferred; we believe this to be the most likely manifestation of the error. AUTHOR/CORRECTOR: DATE: August 7, 1996 Wa Kwok REVIEWED BY QA: DATE: August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to ail revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 96-38 KEYWORDS: SOLID MODELING BOOLEAN SUBTRACT ASBL DESCRIPTION OF ERROR: The "SEPO" field of the solid modeling boolean command "ASBL" does not always produce separate areas. It may produce areas with separate lines which share common keypoints. In most cases this error is obvious. However, there may be rare instances where the error could lead to unanticipated results if validation of boundary conditions and loads is bypassed before solution by the user. FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.1 Release 5.4 Component Products Rev. 5.1 Component Products Release 5.4 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: In Release 5.3, generate separate areas from unseparated areas by using the "AGEN" command after the "ASBL" command. COMMENTS: AUTHOR/CORRECTOR: DATE: August 71 1996 Yu-Hua Ting REVIEWED BY QA: DATE: August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS QA NOTICE NOTICE NO: QA96-06 SUBJECT: KUSE MATRIX REUSE DESCRIPTION: The program documentation has conflicting information on the operation of the KUSE command. The Theory Manual states that KUSE,-1 causes the program to reform the element matrices. The Procedures and Commands Manuals, however, state that KUSE,-1 only causes the reformulation of the triangularized stiffness matrix (using the previously formed element stiffness matrices). The program functions as reported in the Procedures and Command Manuals. AFFECTED VERSIONS: Rev. 5.0 through Rev. 5.2 Component Products Rev. 5.0A through Rev. 5.2 OTHER COMMENTS: To force reformulation of the element matrices, use NLGEOM,ON or change material properties slightly, using a temperature-dependent material. KUSE,-1 is rarely required in an analysis (only for some debugging and certain cases of error avoidance). Several past Class3 errors (such as 94-68 R1, 93-33, 93-03, and 92- 25) incorrectly suggested that using KUSE,-1 was a way to avoid the errors reported. At 5.3, the program is changed to operate as the Theory Manual states. AUTHOR: DATE: August 7, 1996 Peter Kohnke REVIEWED BY QA: DATE: August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 John A. Swanson ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 92-25 R1 KEYWORDS: STIF18 STIF29 STIF60 PRESSURE FLEXIBILITY DESCRIPTION OF ERROR: Results using STIF18 (the elastic curved pipe element) or STIF60 (the plastic curved pipe element) are incorrect if the pressure contribution to the flexibility factor is included (KEYOPT(3)=1) and: 1. the pressure (P, EP, PSF or PPRES commands) is changed between iterations; and 2. the element matrix is reused. The element matrix is reused unless: 1. material properties for the element are a function of temperature (MP, MPDATA commands); or 2. the full Newton-Raphson option (KAY,9,1) has been used. [Strikeout: or 3. KUSE, 1 has not been used to force reformulation.] FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 2.0 Rev. 5.0 PC Products Rev. 4.3 PC Products Rev. 5.0 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: [Strikeout: Use KUSE, 1 to force the reformulation of the element matrices.] COMMENTS: STIF18 was known as STIF29 prior to Rev. 4.3. AUTHOR/CORRECTOR: DATE: August 7, 1996 David L. Conover REVIEWED BY QA: DATE August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual, corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 93-03 R1 KEYWORDS: KAN,-1 CONVECTION TBULK DESCRIPTION OF ERROR: If the bulk temperature is zero (TBULK=0) in a thermal convection input (e.g., CV and CVSF commands), and the convection input is removed in a later load step, the conductivity matrix of the applicable element will not be reformulated to remove the convection condition unless KSS is temperature-dependent [Strikeout: or the command KUSE, 1 has been input.] FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 4.0 Rev. 5.0 PC/THERMAL Rev. 4.2 ANSYS/THERMAL Rev. 5.0 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: [Strikeout: 1. Set KUSE, 1 to force the reformulation of all element matrices. or] 1. Set TBULK to a small finite number (instead of zero). or 2. Make the thermal conductivity mildly KXX temperature-dependent. COMMENTS: AUTHOR/CORRECTOR: DATE: August 7, 1996 David L. Conover REVIEWED BY QA: DATE: August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 93-33 R1 KEYWORDS: SHELL41 ELEM41 CLOTH OPTION DESCRIPTION OF ERROR: The cloth option (KEYOPT(1)=2) of SHELL41 (the membrane shell element) has the following errors: 1. The elements are sometimes erroneously reported to be converged with both directions collapsed (STATUS=2) when there is actually a small amount of tension in one direction (STATUS=1). The error does not occur if Poisson's ratio (NUXY or PRXY on the MP command) is 0.0. 2. Elements with integration points that report tension in one direction and collapse in the other direction (STATUS=1) may not give correct answers. The results may incorrectly depend on the order in which the loads are applied. 3. If thermal strains are present, the results are incorrect. 4. If KEYOPT(2)=0 (include extra displacement shapes [default]), the elements may be reported to be converged when in fact they are not. This is because the element stiffness matrices are sometimes not reformed when the status changes, which can cause incorrect results. FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 4.0 - errors 1 & 2 Rev. 5.0A Rev. 5.0 - errors 3 & 4 Rev. 5.0A SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: For error 2, rerunning the problem with a different order of loading and achieving the same or similar results increases the reliability of having the correct solution. This assumes that there are no energy- absorbing or other legitimately path-dependent effects (such as plasticity) in the model. [Strikeout: For error 4, add the command KUSE, 1 before the first SOLVE command to force reformulation of the stiffness matrix during each iteration.] COMMENTS: SHELL41 was referred to as STIF41 prior to Rev. 5.0. AUTHOR/CORRECTOR: DATE: August 7, 1996 Peter Kohnke REVIEWED BY QA: DATE: August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 94-68 R2 KEYWORDS: BEAM44 ELEM44 STIFFNESS RELEASES DESCRIPTION OF ERROR: There are two errors when using BEAM44 (3-D tapered unsymmetric beam element) with stiffness releases. 1. All results are in error for load steps, substeps, and iterations in which the element stiffness matrix is being re-used. Stiffness matrices are generally reused unless large deflections are active, or the materials or real constants are changing. See Section 13.3 of the Theory Manual. 2. All results are incorrect if any of the following are active: a. Large deflection (NLGEOM,ON) or b. Stress Stiffening (SSTIF,ON) or c. Newton-Raphson (NROPT command). FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 4.4 Rev. 5.2 ANSYS/Linear Rev. 4.4 ANSYS/Linear Rev. 5.2 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: [Strikeout: Error 1. Use KUSE, 1 to force reformulation of all element stiffness matrices.] Error 2. Use coincident coupled nodes (CP command) to induce the stiffness release where required. COMMENTS: On some computer system, these errors will cause an abort. Stiffness releases are accessed with KEYOPT(7) and KEYOPT(8) or, if using pre-Rev. 5.0 input, with KEYOPT(3) and KEYOPT(4). For error 2, if using pre-Rev. 5.0 input: a. Large deflection is activated by the KAY,6,1 command. b. Stress stiffening is activated by the KAY,8,1 command. c. Newton-Raphson is activated by KAY,9,n (n = 1, 2 or 3). AUTHOR/CORRECTOR: DATE: August 7, 1996 David L. Conover REVIEWED BY QA: DATE: August 7, 1996 William J. Bryan APPROVAL: DATE: August 7, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 95-37 R1 KEYWORDS: FLOTRAN FLUID142 ELEM142 DESCRIPTION OF ERROR: Three-dimensional FLOTRAN models using FLUID142 elements solved in cylindrical coordinates (KEYOPT(3)=3) with a Z-direction acceleration (ACEL command) yield incorrect velocity and pressure solutions. FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.1 [Redline: Release 5.4] [Redline: ANSYS/Flotran Rev. 5.1] SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: COMMENTS: AUTHOR/CORRECTOR: DATE: August 8, 1996 Mark A. Troscinski REVIEWED BY QA: DATE: August 8, 1996 William J. Bryan APPROVAL: DATE: August 8, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ FORM SASI-QA25 DEC 19, 1988 ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 95-39 R1 KEYWORDS: FLOTRAN ELEM142 FLUID142 DESCRIPTION OF ERROR: Three-dimensional FLOTRAN models, using FLUID142 elements, solved in Cartesian coordinates (KEYOPT(3)=0, default) yield incorrect pressure solutions when solved with a rotating frame of reference (CGOMGA or OMEGA commands). FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.1 [Redline: Release 5.4] [Redline: ANSYS/Flotran Rev. 5.1] SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: COMMENTS: AUTHOR/CORRECTOR: DATE: August 8, 1996 Mark A. Troscinski REVIEWED BY QA: DATE: August 8, 1996 William J. Bryan APPROVAL: DATE: August 8, 1996 John Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 95-49 R1 KEYWORDS: FLOTRAN ELEM141 ELEM142 DESCRIPTION OF ERROR: FLOTRAN models with triangular FLUID141 elements or tetrahedral FLUID142 elements which use the transient, compressible flow algorithm yield time-inaccurate velocity and pressure solutions if the flow is supersonic. FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.1 [Redline: Release 5.4] [Redline: ANSYS/Flotran Rev. 5.1] SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: Use quadrilateral FLUID141 or hexahedral FLUID142 elements instead. COMMENTS: AUTHOR/CORRECTOR: DATE: August 8, 1996 Mark A. Troscinski REVIEWED BY QA: DATE: August 8, 1996 William J. Bryan APPROVAL: DATE: August 8, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ Table "ANSYS 5.1 CLASS3 ERROR SUMMARY BY REPORT NUMBER" 3 pages omitted. Table "ANSYS 5.1 CLASS3 ERROR SUMMARY KEYWORD SORT OF ALL REVISION 5.1 CLASS3 ERRORS Date of this report: 8/12/96" 9 pages omitted. ANSYS, Inc. 201 Johnson Road Telephone 412.746.3304 Houston, PA 15342-1300 Facsimile 412.746.9494 September 23, 1996 Dear Class3 Error Recipient: Attached you will find ANSYS Class3 Error Reports 96-39, 96-40 and 96-41. Also, included are ANSYS QA Notices QA96-07 and QA96-08. QA Notice QA96-07 is being issued to alert Silicon Graphics IRIX 6.2 Operating System users of a Silicon Graphics Operating System bug, which may cause incorrect results when running the ANSYS program. QA Notice QA96-08 is being issued to clarify the documentation for midside node generation. For your convenience, also enclosed are Class3 Error Report Summaries for Revision 5.2 and Release 5.3, sorted both by Class3 Error Number and by keyword. Sincerely, ANSYS, INC. William J. Bryan Quality Assurance Manager ANSYS [Registered Trademark] a registered trademark off SAS IP ANSYS. Inc. ISO 9001 [logo omitted] A3721 ISO 9001 CERTIFICATION INCLUDE ALL COMMERCIAL PRODUCTS ANSYS Revision Identifier Description ANSYS revision identifiers consist of a major revision level, a minor revision level, a correction level, and occasionally a special version level. An example of how this is constructed is shown below: 5.0A--10 major revision level special version identifier minor revision level correction level Major revision level changes indicate that new features have been added to the program and that some level of program architecture change and/or file structure has occurred. Minor revision level changes also indicate that new features have been added to the program, but files are upwardly compatible. ALI known error fixes are included in both minor and major revisions. Changes to the correction level indicate that it is primarily an error correction release. Special version identifiers indicate that one or more additional minor changes have been made to the program, normally to circumvent an error. Special versions are not general releases to all ANSYS licensees, since they typically represent errors occurring only on one system, a subset of our customers who have specific graphics devices, etc. The ANSYS revision identifier(s) shown under "corrected in" on the front side of this Class3 Error Report indicates the first possible revision that could contain the correction. A major program change needed to fix an error can dictate that the next minor or major revision will contain the fix rather than the next correction level. For example, when errors were being reported while Rev. 4.3A was the latest production version, most Class3 error reports indicated that 4.3B was the "corrected in" revision. Others requiring significant code restructuring were reported as fixed in 4.4. Rev. 4.3B was never released, but Rev. 4.4 contained all error corrections noted as fixed in 4.3B. An identifier indicated under "corrected in" does = guarantee that a general release of that revision of ANSYS will occur. It does indicate that the correction is known and implemented in the coding that would be part of that general release. Equivalent Product Identifiers The ANSYS family of products occasionally undergoes name changes between revisions and/or changes in the functionality of derived products (such as ANSYS-PC/LINEAR). To minimize the potential for confusion in these areas, the important product name equivalent (similar program functionality and error content) are listed below. ANSYS/ED contains all errors the full ANSYS product, starting at shown for Rev. 5.0, and beyond, unless otherwise noted., PC/LINEAR is equivalent to WS/LINEAR at Rev. 4.4A, and ANSYS/LINEAR starting at Rev. 5.0. PC/THERMAL is equivalent to WS/THERMAL at Rev. 4.4A, and ANSYS/THERMAL starting at Rev. 5.0. PREPPOST contains relevant the full ANSYS product, for errors shown for included pre- and postprocessing functionality ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 96-39 KEYWORDS: APDL ARFACE *GET DESCRIPTION OF ERROR: The ANSYS Parametric Design Language *GET function ARFACE(E) may produce incorrect results for triangular element faces. FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.1 Release 5.4 Component Products Rev. 5.1 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: Use the *GET function of AREAND(N1,N2,N3) instead. The use of the AREAND function is documented in the Commands Manual at the end of the GET documentation. COMMENTS: This error is due to an uninitialized variable. ARFACE(E) has been observed to either produce incorrect results,/abort out of the program, or work correctly, depending upon the specific finite element model and/or the computer system. AUTHOR/CORRECTOR: DATE: September 11, 1996 Christopher W. Aiken REVIEWED BY QA: DATE: September 11, 1996 William J. Bryan APPROVAL: DATE: September 11, 1996 John K. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 96-40 KEYWORDS: PREP7 PIPE16 VALVE BUNIF DESCRIPTION OF ERROR: If the VALVE command of the PREP7 piping module is used to insert one or more valve (PIPE16) elements in a piping run and the elements connected to the valve element do not have element temperatures specified, then element temperatures of 0.0 degrees will erroneously be assigned to the PIPE16 valve elements. Any uniform temperature specified using the BFUNIF command will not be used in the solution for these elements. FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.0 Release 5.4 ANSYS/LinearPlus Rev. 5.2 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: Before the solution, use the BFELIST command to list any temperatures assigned to the PIPE16 elements and issue a BFDELE to delete any erroneous temperatures for the affected PIPE16 valve elements. COMMENTS: AUTHOR/CORRECTOR: DATE: September 20, 1996 Christopher W. Aiken REVIEWED BY QA: DATE: September 20, 1996 William J. Bryan APPROVAL: DATE: September 20, 1996 John A. Swanson _________________________ *_/ If a product name is not incLuded in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS [Registered Trademark] CLASS3 ERROR REPORT ERROR NO: 96-41 KEYWORDS: ELEM150 SHELL150 ELEMENT VOLUME ETABLE *GET DESCRIPTION OF ERROR: The element volume for SHELL150 is obtained from the ETABLE command in POST1 or the *GET for element volume after a solution is incorrect FIRST INCORRECT VERSION(S):*_/ CORRECTED IN:*_/ Rev. 5.2 Release 5.4 Component Products Rev. 5.2 SUGGESTED USER ACTION FOR RUNNING ON UNCORRECTED VERSION: Multiply the reported number by the shell thickness to obtain a correct value of volume. This suggestion is valid for elements with constant thickness. COMMENTS: AUTHOR/CORRECTOR: DATE: September 20, 1996 Tim Pawlak REVIEWED BY QA: DATE: September 20, 1996 William J. Bryan APPROVAL: DATE: September 20, 1996 John A. Swanson _________________________ *_/ If a product name is not included in the "first incorrect version", the full ANSYS program is implied. For products not listed, this error does not apply, but see the reverse side for equivalent product designations. Unless noted otherwise, this error report also applies to all revisions after the first incorrect one and prior to the corrected revision. All revisions after "corrected in" are corrected. Manual corrections are included in on-line documentation as appropriate. Please see the reverse side of this sheet for additional information on ANSYS revision identifiers. _________________________ ANSYS QA NOTICE NOTICE NO: QA96-07 SUBJECT: SYSTEM SILICON GRAPHICS IRIX 6.2 DESCRIPTION: The Silicon Graphics IRIX 6.2 operating system contains a bug that affects proper execution of ANSYS owing to a formatting error for numerical output. The IRIX 6.2 Patch 1457 contains a bug fix that fully corrects this problem. The effect of this error is that some numbers printed by the ANSYS program on platforms with this operating system version are too small (by a factor of 10). For example, a number that should be 100000. appears as 10000. Although this bug is not a bug in the ANSYS program, we are notifying our customers due to the incorrect results it can produce using the ANSYS program. AFFECTED VERSIONS: Silicon Graphics IRIX 6.2 Operating System (any ANSYS versions run at this level) CORRECTED IN: Patch 1457 can be obtained via the SGI patch server. See the SGI Web Page at http://www.sgi.com. Patch 1457 is also available on the ANSYS Web Page at http://www.ansys.com in the Services and Support area. Where customers do not have Internet access, SGI Service Engineers can be called upon to install the patch at 1-800-800-4SGI. SUGGESTED USER ACTION: Customers must obtain this corrective patch from SGI to remedy this error. AUTHOR: DATE: September 20, 1996 John Fortuna REVIEWED BY QA: DATE: September 20, 1996 William J. Bryan APPROVAL: DATE: September 20, 1996 John A. Swanson ANSYS QA NOTICE NOTICE NO: QA96-08 SUBJECT: DIRECT MODEL GENERATION ELEMENTS MIDSIDE NODES DESCRIPTION: The ANSYS program documentation regarding geometric locations for midside nodes is potentially confusing. For some higher order (midside node) elements (such as PLANE2, PLANE82, SOLID95, etc.), the ANSYS Elements Manual contains statements similar to the following: Midside nodes may be removed (with a zero node number) to form a pattern compatible with other element types. The geometric locations of midside nodes are automatically calculated, if not supplied. The following clarification is provided to reduce the potential for confusion and/or misinterpretation regarding the program behavior that this statement describes. When defining midside node elements using the direct generation method (i.e., the E, EN, etc. commands), midside nodes are created and located according to the following: Some higher order elements permit the removal of midside nodes. For such elements, if a zero value (or blank) is used for a midside node when the element is defined, the corresponding midside node is REMOVED from the element. As a result, some or all of the quadratic terms (depending on the number of removed midside nodes) in the element's shape functions are ignored, thus forcing the element edge(s) to be and remain straight. This is typically done to compatibly connect higher order (midside node) elements to lower order (non-midside node) elements. In the extreme case of an element with all of its midside nodes removed, the element will use linear shape functions, thus producing results comparable to the analogous lower order (non-midside node) element type with extra displacement shapes suppressed. When defining a higher order element, if a node number is used for a midside node and that node has not yet been defined (N, NGEN, FILL, NSYM, etc.), then the node will be automatically defined and given a geometric location that is the calculated mid-point (linearly interpolated in Cartesian coordinates) between its respective corner nodes. Nodal rotations for such nodes will also be automatically calculated by linearly interpolating between the nodal rotation angles of the corner nodes. This allows the user to create midside node elements without explicitly defining the geometric locations for midside nodes that are located midway between the corner nodes. Note that this behavior applies only to the direct model generation method. Controls regarding midside nodes in meshed models are provided in the meshing controls of the ANSYS program (ESHAPE command). AFFECTED VERSIONS: Revision 4.0 through Release 5.3 Component Products Revision 4.3 through Release 5.3 COMMENTS: In Release 5.4, documentation regarding direct generation and midside node elements will be clarified. AUTHOR: DATE: September 20, 1996 Kenneth G. Podlaszewski VIEWED BY QA: DATE: DATE: September 20, 1996 William J. Bryan APPROVAL: DATE: September 20, 1996 John A. Swanson Table "ANSYS 5.2 CLASS3 ERROR SUMMARY BY REPORT NUMBER" 2 pages omitted. Table "ANSYS 5.2 CLASS3 ERROR SUMMARY KEYWORD SORT OF ALL REVISION 5.2 CLASS3 ERRORS Date of this report: 9/24/96" 5 pages omitted. Table "ANSYS 5.3 CLASS3 ERROR SUMMARY KEYWORD SORT OF ALL REVISION 5.3 CLASS3 ERRORS Date of this report: 9/24/96" omitted. *** END OF DOCUMENT ***

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