Numerical investigation of externally venting flame characteristics in a corridor-façade configuration

Eleni Asimakopoulou, Konstantinos Chotzoglou, Dionysios Kolaitis, Jianping Zhang, Michael A Delichatsios

Research output: Contribution to conferencePaper

Abstract

Understanding of the physics and mechanisms of fire development and Externally Venting Flames (EVF) in corridor-like enclosures is fundamental to studying fire spread to adjacent floors in high-rise buildings. The main scope of this study is to investigate the burning behaviour of a liquid fuel pool fire in a corridor-like enclosure, to identify the key factors influencing EVF characteristics, EVF impact on façades and to assess the ability of currently available CFD tools to adequately describe corridor-façade fires. The Fire Dynamics Simulator (FDS) CFD tool is used for the numerical simulations which are compared and validated against medium scale experimental data on corridor-façade fire experiments. Experimental results suggest that in the interior of the corridor, good qualitative and occasionally quantitative agreement is observed for the gas temperatures. When the burner is positioned at the back of the corridor, resulting in increased temperatures at the interior, FDS generally under-predicts the combustion zone and the fire plume seems tilting at the rear of the corridor. The performance of the CFD tool in predicting EVF gas temperatures and heat flux to the adjacent façade is improved in larger opening sizes. Regarding the heat flux at the exposed surface of the façade, good quantitative agreement is observed, especially at lower heights near the opening.

Conference

ConferenceInternational Seminar on Fire and Explosion Hazards,
CountryRussian Federation
CitySaint-Petersburg
Period21/04/1926/04/19
Internet address

Fingerprint

Facades
Fires
Computational fluid dynamics
Enclosures
Heat flux
Simulators
Liquid fuels
Fuel burners
Gases
Temperature
Physics
Computer simulation

Keywords

  • CFD
  • Facade fire
  • Externally Venting Flames (EVF)

Cite this

Asimakopoulou, E., Chotzoglou, K., Kolaitis, D., Zhang, J., & Delichatsios, M. A. (2019). Numerical investigation of externally venting flame characteristics in a corridor-façade configuration. Paper presented at International Seminar on Fire and Explosion Hazards, Saint-Petersburg, Russian Federation.
Asimakopoulou, Eleni ; Chotzoglou, Konstantinos ; Kolaitis, Dionysios ; Zhang, Jianping ; Delichatsios, Michael A. / Numerical investigation of externally venting flame characteristics in a corridor-façade configuration. Paper presented at International Seminar on Fire and Explosion Hazards, Saint-Petersburg, Russian Federation.
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abstract = "Understanding of the physics and mechanisms of fire development and Externally Venting Flames (EVF) in corridor-like enclosures is fundamental to studying fire spread to adjacent floors in high-rise buildings. The main scope of this study is to investigate the burning behaviour of a liquid fuel pool fire in a corridor-like enclosure, to identify the key factors influencing EVF characteristics, EVF impact on fa{\cc}ades and to assess the ability of currently available CFD tools to adequately describe corridor-fa{\cc}ade fires. The Fire Dynamics Simulator (FDS) CFD tool is used for the numerical simulations which are compared and validated against medium scale experimental data on corridor-fa{\cc}ade fire experiments. Experimental results suggest that in the interior of the corridor, good qualitative and occasionally quantitative agreement is observed for the gas temperatures. When the burner is positioned at the back of the corridor, resulting in increased temperatures at the interior, FDS generally under-predicts the combustion zone and the fire plume seems tilting at the rear of the corridor. The performance of the CFD tool in predicting EVF gas temperatures and heat flux to the adjacent fa{\cc}ade is improved in larger opening sizes. Regarding the heat flux at the exposed surface of the fa{\cc}ade, good quantitative agreement is observed, especially at lower heights near the opening.",
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Asimakopoulou, E, Chotzoglou, K, Kolaitis, D, Zhang, J & Delichatsios, MA 2019, 'Numerical investigation of externally venting flame characteristics in a corridor-façade configuration' Paper presented at International Seminar on Fire and Explosion Hazards, Saint-Petersburg, Russian Federation, 21/04/19 - 26/04/19, .

Numerical investigation of externally venting flame characteristics in a corridor-façade configuration. / Asimakopoulou, Eleni; Chotzoglou, Konstantinos; Kolaitis, Dionysios; Zhang, Jianping; Delichatsios, Michael A.

2019. Paper presented at International Seminar on Fire and Explosion Hazards, Saint-Petersburg, Russian Federation.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Numerical investigation of externally venting flame characteristics in a corridor-façade configuration

AU - Asimakopoulou, Eleni

AU - Chotzoglou, Konstantinos

AU - Kolaitis, Dionysios

AU - Zhang, Jianping

AU - Delichatsios, Michael A

PY - 2019

Y1 - 2019

N2 - Understanding of the physics and mechanisms of fire development and Externally Venting Flames (EVF) in corridor-like enclosures is fundamental to studying fire spread to adjacent floors in high-rise buildings. The main scope of this study is to investigate the burning behaviour of a liquid fuel pool fire in a corridor-like enclosure, to identify the key factors influencing EVF characteristics, EVF impact on façades and to assess the ability of currently available CFD tools to adequately describe corridor-façade fires. The Fire Dynamics Simulator (FDS) CFD tool is used for the numerical simulations which are compared and validated against medium scale experimental data on corridor-façade fire experiments. Experimental results suggest that in the interior of the corridor, good qualitative and occasionally quantitative agreement is observed for the gas temperatures. When the burner is positioned at the back of the corridor, resulting in increased temperatures at the interior, FDS generally under-predicts the combustion zone and the fire plume seems tilting at the rear of the corridor. The performance of the CFD tool in predicting EVF gas temperatures and heat flux to the adjacent façade is improved in larger opening sizes. Regarding the heat flux at the exposed surface of the façade, good quantitative agreement is observed, especially at lower heights near the opening.

AB - Understanding of the physics and mechanisms of fire development and Externally Venting Flames (EVF) in corridor-like enclosures is fundamental to studying fire spread to adjacent floors in high-rise buildings. The main scope of this study is to investigate the burning behaviour of a liquid fuel pool fire in a corridor-like enclosure, to identify the key factors influencing EVF characteristics, EVF impact on façades and to assess the ability of currently available CFD tools to adequately describe corridor-façade fires. The Fire Dynamics Simulator (FDS) CFD tool is used for the numerical simulations which are compared and validated against medium scale experimental data on corridor-façade fire experiments. Experimental results suggest that in the interior of the corridor, good qualitative and occasionally quantitative agreement is observed for the gas temperatures. When the burner is positioned at the back of the corridor, resulting in increased temperatures at the interior, FDS generally under-predicts the combustion zone and the fire plume seems tilting at the rear of the corridor. The performance of the CFD tool in predicting EVF gas temperatures and heat flux to the adjacent façade is improved in larger opening sizes. Regarding the heat flux at the exposed surface of the façade, good quantitative agreement is observed, especially at lower heights near the opening.

KW - CFD

KW - Facade fire

KW - Externally Venting Flames (EVF)

M3 - Paper

ER -

Asimakopoulou E, Chotzoglou K, Kolaitis D, Zhang J, Delichatsios MA. Numerical investigation of externally venting flame characteristics in a corridor-façade configuration. 2019. Paper presented at International Seminar on Fire and Explosion Hazards, Saint-Petersburg, Russian Federation.