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Numerical investigations of rack storage fires

Yan, Zhenghua LU and Holmstedt, Göran LU (1999) Fire safety science : proceedings of the sixth international symposium In Fire Safety Science p.1075-1086
Abstract
A number of numerical simulations of rack storage fires have been carried out, with various fuel types and burner outputs. Both the standard buoyancy-modified k - turbulence model and a recently developed turbulence model which significantly improves the consideration of the buoyancy effect on turbulence and turbulent transport, were used to study the turbulence of the buoyant flow. The flamelet concept, coupled to a prescribed probability density function, was employed to model the non-premixed combustion process. Sooting was modeled by solving the balance equations for mass fraction and number density considering nucleation, surface growth, coagulation and oxidation. The discrete transfer method was used to calculate radiation, with the... (More)
A number of numerical simulations of rack storage fires have been carried out, with various fuel types and burner outputs. Both the standard buoyancy-modified k - turbulence model and a recently developed turbulence model which significantly improves the consideration of the buoyancy effect on turbulence and turbulent transport, were used to study the turbulence of the buoyant flow. The flamelet concept, coupled to a prescribed probability density function, was employed to model the non-premixed combustion process. Sooting was modeled by solving the balance equations for mass fraction and number density considering nucleation, surface growth, coagulation and oxidation. The discrete transfer method was used to calculate radiation, with the radiation properties of the main radiating species - carbon dioxide, water vapour and soot, provided by a fast, narrowband model. The results, including heat flux and gas temperature profile, were analyzed and compared with experimental measurements. The comparisons showed considerably improved agreement for the new model. Copyright International Association for Fire Safety Science. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Fires, Buoyancy, Carbon dioxide, Coagulation, Computational fluid dynamics, Fuel storage, Heat flux, Heat transfer, Probability density function, Soot, Turbulence models
in
Fire Safety Science
editor
Curtat, Michel and
pages
1075 - 1086
publisher
Interscience Communications
conference name
Fire safety science : proceedings of the sixth international symposium
ISBN
0-925223-25-5
language
English
LU publication?
yes
id
b60c7abc-f6b2-4164-bcae-fae65dc468b3 (old id 4468311)
date added to LUP
2014-06-19 09:43:20
date last changed
2016-04-16 07:25:27
@inproceedings{b60c7abc-f6b2-4164-bcae-fae65dc468b3,
  abstract     = {A number of numerical simulations of rack storage fires have been carried out, with various fuel types and burner outputs. Both the standard buoyancy-modified k - turbulence model and a recently developed turbulence model which significantly improves the consideration of the buoyancy effect on turbulence and turbulent transport, were used to study the turbulence of the buoyant flow. The flamelet concept, coupled to a prescribed probability density function, was employed to model the non-premixed combustion process. Sooting was modeled by solving the balance equations for mass fraction and number density considering nucleation, surface growth, coagulation and oxidation. The discrete transfer method was used to calculate radiation, with the radiation properties of the main radiating species - carbon dioxide, water vapour and soot, provided by a fast, narrowband model. The results, including heat flux and gas temperature profile, were analyzed and compared with experimental measurements. The comparisons showed considerably improved agreement for the new model. Copyright International Association for Fire Safety Science.},
  author       = {Yan, Zhenghua and Holmstedt, Göran},
  booktitle    = {Fire Safety Science},
  editor       = {Curtat, Michel},
  isbn         = {0-925223-25-5},
  keyword      = {Fires,Buoyancy,Carbon dioxide,Coagulation,Computational fluid dynamics,Fuel storage,Heat flux,Heat transfer,Probability density function,Soot,Turbulence models},
  language     = {eng},
  pages        = {1075--1086},
  publisher    = {Interscience Communications},
  title        = {Numerical investigations of rack storage fires},
  year         = {1999},
}