Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18733
Title: Computational fluid dynamics simulation of fire-induced air flow in a large space building: Key points to note
Authors: Li, YF
Chow, WK 
Keywords: Field model
Fire
Large space
Volumetric heat source
Issue Date: 2004
Source: Proceedings of the ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004, 2004, v. 2 B, p. 1163-1169 How to cite?
Abstract: Fire-induced air flow in a large span building by computational fluid dynamics (CFD) will be discussed in this paper. The CFD model is based on Reynolds Averaging Navier-Stokes (RANS) equations with k-ε based turbulence model for predicting velocity, pressure and temperature distribution. This technique is commonly used in practical design for smoke management system. The fire is taken as a volumetric heat source and buoyancy effects are included in equations for the vertical momentum and turbulent parameters. Several key points to note in the simulation will be discussed. These are: Relaxation factor and convergence criteria. False diffusion. Sudden changes in flow parameters across the heat source. A large terminal hall with 1 MW fire is taken as an example to discuss the above points. The fire scenarios in a region of interest will be assessed by CFD.
Description: 2004 ASME Heat Transfer/Fluids Engineering Summer Conference, HT/FED 2004, Charlotte, NC, 11-15 July 2004
URI: http://hdl.handle.net/10397/18733
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