United States Nuclear Regulatory Commission - Protecting People and the Environment

Analysis of Diffusion Flame Tests (NUREG/CR-4534, SAND86-0419)

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Publication Information

Manuscript Completed: July 1986
Date Published:
August 1987

Prepared by:
Joseph E. Shepherd
Organization 1512
Sandia National Laboratories
P.O. Box 5800
Albuquerque, New Mexico 87185
Operated by Sandia Corporation
for the U.S. Department of Energy
Under Contract No. DE-AC04-76DP00789

Prepared for:
Division of Reactor Accident Analysis
and
Division of Engineering
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

Under Memorandum of Understanding DOE 40-550-75

NRC FIN A-1246, A-1336

Availability Notice

Abstract

This report discusses the results and analysis of hydrogen diffusion flame tests conducted at the Nevada Test Site by EPRI and the U.S. NRC. Those tests were designed to simulate the effects of hydrogen combustion inside a nuclear power plant containment following a degraded-core accident. Test initial conditions and sample data plots are given for 16 tests. Mixing and ignition phenomena are discussed in terms of the source parameters and igniter location. A simple model is developed for simulating the heat transfer and computing convective heat transfer coefficients from experimental pressure measurements. Convective heat transfer coefficients are reported for four tests. The effect of stagnation-point heat transfer is estimated.

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