Modeling and simulation of liquid pool fires with in-depth radiation absorption and heat transfer

Topi Sikanen (Corresponding Author), Simo Hostikka

Research output: Contribution to journalArticleScientificpeer-review

20 Citations (Scopus)

Abstract

In this paper we present a computational fluid dynamics model for predicting the heat release rates of liquid pool fires. The model makes use of the one-dimensional heat transfer solver to provide the liquid surface boundary condition for the gas phase solver. The in-depth radiation transport is solved by a one-dimensional radiation transport model together with effective absorption coefficients determined from experimental data. The model accounts for the convective heat transfer in the liquid phase by modifying the thermal conductivity. The model is implemented as a boundary condition in the fire dynamics simulator (FDS). The model is validated by comparing experimental and predicted evaporation rates for water and a range of hydrocarbon fuels. The sensitivity of the results to the modelling assumptions and model input parameters is studied. The in-depth heat transfer appears to have a significant effect on the fire dynamics, except for the peak burning rates, which depend most importantly on the gas phase combustion.
Original languageEnglish
Pages (from-to)95-109
JournalFire Safety Journal
Volume80
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

radiation absorption
Fires
heat transfer
Heat transfer
Radiation
Liquids
liquids
radiation transport
simulation
Gases
Boundary conditions
boundary conditions
vapor phases
hydrocarbon fuels
burning rate
evaporation rate
liquid surfaces
convective heat transfer
Hydrocarbons
computational fluid dynamics

Keywords

  • burning rate
  • heat release rate
  • pool fire
  • fuel absorption
  • thermal radiation

Cite this

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title = "Modeling and simulation of liquid pool fires with in-depth radiation absorption and heat transfer",
abstract = "In this paper we present a computational fluid dynamics model for predicting the heat release rates of liquid pool fires. The model makes use of the one-dimensional heat transfer solver to provide the liquid surface boundary condition for the gas phase solver. The in-depth radiation transport is solved by a one-dimensional radiation transport model together with effective absorption coefficients determined from experimental data. The model accounts for the convective heat transfer in the liquid phase by modifying the thermal conductivity. The model is implemented as a boundary condition in the fire dynamics simulator (FDS). The model is validated by comparing experimental and predicted evaporation rates for water and a range of hydrocarbon fuels. The sensitivity of the results to the modelling assumptions and model input parameters is studied. The in-depth heat transfer appears to have a significant effect on the fire dynamics, except for the peak burning rates, which depend most importantly on the gas phase combustion.",
keywords = "burning rate, heat release rate, pool fire, fuel absorption, thermal radiation",
author = "Topi Sikanen and Simo Hostikka",
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language = "English",
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Modeling and simulation of liquid pool fires with in-depth radiation absorption and heat transfer. / Sikanen, Topi (Corresponding Author); Hostikka, Simo.

In: Fire Safety Journal, Vol. 80, 2016, p. 95-109.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Modeling and simulation of liquid pool fires with in-depth radiation absorption and heat transfer

AU - Sikanen, Topi

AU - Hostikka, Simo

PY - 2016

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AB - In this paper we present a computational fluid dynamics model for predicting the heat release rates of liquid pool fires. The model makes use of the one-dimensional heat transfer solver to provide the liquid surface boundary condition for the gas phase solver. The in-depth radiation transport is solved by a one-dimensional radiation transport model together with effective absorption coefficients determined from experimental data. The model accounts for the convective heat transfer in the liquid phase by modifying the thermal conductivity. The model is implemented as a boundary condition in the fire dynamics simulator (FDS). The model is validated by comparing experimental and predicted evaporation rates for water and a range of hydrocarbon fuels. The sensitivity of the results to the modelling assumptions and model input parameters is studied. The in-depth heat transfer appears to have a significant effect on the fire dynamics, except for the peak burning rates, which depend most importantly on the gas phase combustion.

KW - burning rate

KW - heat release rate

KW - pool fire

KW - fuel absorption

KW - thermal radiation

U2 - 10.1016/j.firesaf.2016.01.002

DO - 10.1016/j.firesaf.2016.01.002

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JF - Fire Safety Journal

SN - 0379-7112

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