Heat, mass, and momentum transport model for hydrogen diffusion flames in nuclear reactor containments

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5569127

Travis, J R

It is now possible to analyze the time-dependent, fully three-dimensional behavior of hydrogen diffusion flames in nuclear reactor containments. This analysis involves coupling the full Navier-Stokes equations with multi-species transport to the global chemical kinetics of hydrogen combustion. A transport equation for the subgrid scale turbulent kinetic energy density is solved to produce the time and space dependent turbulent transport coefficients. The heat transfer coefficient governing the exchange of heat between fluid computational cells adjacent to wall cells is calculated by a modified Reynolds analogy formulation. The analysis of a MARK-III containment indicates very complex flow patterns that greatly influence fluid and wall temperatures and heat fluxes. 18 refs., 24 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5569127
• Report Number(s): LA-UR-85-234; CONF-850810-5; ON: DE85006679
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCIDENTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION KINETICS
COMPUTERIZED SIMULATION
CONTAINERS
CONTAINMENT
CONTAINMENT SYSTEMS
ELEMENTS
ENERGY TRANSFER
ENGINEERED SAFETY SYSTEMS
FLAME PROPAGATION
FLAMES
HEAT TRANSFER
HYDROGEN
HYDROGEN PRODUCTION
KINETICS
MATHEMATICAL MODELS
NONMETALS
OXIDATION
POWER REACTORS
PRESSURE GRADIENTS
REACTION KINETICS
REACTOR ACCIDENTS
REACTOR SAFETY
REACTOR VESSELS
REACTORS
SAFETY
SIMULATION
THERMOCHEMICAL PROCESSES
TURBULENCE