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.
Original language | English |
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Title of host publication | Proceedings of the ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004 |
Pages | 1163-1169 |
Number of pages | 7 |
Publication status | Published - 1 Dec 2004 |
Event | 2004 ASME Heat Transfer/Fluids Engineering Summer Conference, HT/FED 2004 - Charlotte, NC, United States Duration: 11 Jul 2004 → 15 Jul 2004 |
Conference
Conference | 2004 ASME Heat Transfer/Fluids Engineering Summer Conference, HT/FED 2004 |
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Country | United States |
City | Charlotte, NC |
Period | 11/07/04 → 15/07/04 |
Keywords
- Field model
- Fire
- Large space
- Volumetric heat source
ASJC Scopus subject areas
- Engineering(all)