Simulating smoke filling in big halls by computational fluid dynamics

W. K. Chow; C. L. Chow; S. S. Li

doi:10.1155/2011/781252

Author(s)

W. K. Chow
C. L. Chow
S. S. Li

Detail(s)

Original language	English
Article number	781252
Journal / Publication	Modelling and Simulation in Engineering
Volume	2011
Publication status	Published - 2011
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1155/2011/781252 Final Published version
	Check@CityULib
Attachment(s)	Documents 5350108.pdf Final Published version, 4.83 MB, PDF Publisher's Copyright Statement This full text is made available under CC-BY 3.0. https://creativecommons.org/licenses/by/3.0/
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-79953743560&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(f0bc08b7-9de0-4518-9527-4491f8a9ef19).html

Abstract

Many tall halls of big space volume were built and, to be built in many construction projects in the Far East, particularly Mainland China, Hong Kong, and Taiwan. Smoke is identified to be the key hazard to handle. Consequently, smoke exhaust systems are specified in the fire code in those areas. An update on applying Computational Fluid Dynamics (CFD) in smoke exhaust design will be presented in this paper. Key points to note in CFD simulations on smoke filling due to a fire in a big hall will be discussed. Mathematical aspects concerning of discretization of partial differential equations and algorithms for solving the velocity-pressure linked equations are briefly outlined. Results predicted by CFD with different free boundary conditions are compared with those on room fire tests. Standards on grid size, relaxation factors, convergence criteria, and false diffusion should be set up for numerical experiments with CFD. Copyright © 2011 W. K. Chow et al.