Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach

Rachid Fakir; Noureddine Barka; Jean Brousseau

doi:doi:10.11648/j.ep.20180201.15

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Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach

Rachid Fakir, Noureddine Barka, Jean Brousseau

Published in Engineering Physics (Volume 2, Issue 1)

Received: 17 August 2018 Accepted: 3 September 2018 Published: 25 September 2018

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Abstract

This paper presents an analytical model able to explore the design method of natural smoke evacuation through an exhaust vent subject to wind pressure. The proposed model can be used to determine the flow rate of smoke and the optimal section of the exhaust vent according to the geometric parameters of the room, the heat release rate and the pressure exerted by the wind forces at the exhaust vent. The numerical resolutions of the mathematical equations of the model were performed using the dichotomy method. The proposed analytical approach is built progressively by, (i) the examination of interaction forces between buoyancy forces and wind pressure forces, (ii) a numerical validation of the analytical model using the numerical simulation software Fire Dynamics Simulator, and (iii) proposal of a method of approximation of the optimal section of the exhaust vent for a maximum smoke evacuation rate. The results show very satisfactory and provide adequate prediction of the optimal size of the exhaust vent between the theoretical approximation and various configurations of numerical simulation. The feasibility and effectiveness of the proposed approach lead to an accurate and reliable analytical model able to analyze the influence of the size of natural smoke evacuation vents subjected to the pressure of wind forces.

Published in	Engineering Physics (Volume 2, Issue 1)
DOI	10.11648/j.ep.20180201.15
Page(s)	23-31
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

Fire in Confined Spaces, Natural Ventilation of Smoke, Wind Forces, FDS-6.5.3, CFAST-7.3.0

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APA Style

Rachid Fakir, Noureddine Barka, Jean Brousseau. (2018). Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach. Engineering Physics, 2(1), 23-31. https://doi.org/10.11648/j.ep.20180201.15

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ACS Style

Rachid Fakir; Noureddine Barka; Jean Brousseau. Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach. Eng. Phys. 2018, 2(1), 23-31. doi: 10.11648/j.ep.20180201.15

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AMA Style

Rachid Fakir, Noureddine Barka, Jean Brousseau. Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach. Eng Phys. 2018;2(1):23-31. doi: 10.11648/j.ep.20180201.15

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@article{10.11648/j.ep.20180201.15,
  author = {Rachid Fakir and Noureddine Barka and Jean Brousseau},
  title = {Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach},
  journal = {Engineering Physics},
  volume = {2},
  number = {1},
  pages = {23-31},
  doi = {10.11648/j.ep.20180201.15},
  url = {https://doi.org/10.11648/j.ep.20180201.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ep.20180201.15},
  abstract = {This paper presents an analytical model able to explore the design method of natural smoke evacuation through an exhaust vent subject to wind pressure. The proposed model can be used to determine the flow rate of smoke and the optimal section of the exhaust vent according to the geometric parameters of the room, the heat release rate and the pressure exerted by the wind forces at the exhaust vent. The numerical resolutions of the mathematical equations of the model were performed using the dichotomy method. The proposed analytical approach is built progressively by, (i) the examination of interaction forces between buoyancy forces and wind pressure forces, (ii) a numerical validation of the analytical model using the numerical simulation software Fire Dynamics Simulator, and (iii) proposal of a method of approximation of the optimal section of the exhaust vent for a maximum smoke evacuation rate. The results show very satisfactory and provide adequate prediction of the optimal size of the exhaust vent between the theoretical approximation and various configurations of numerical simulation. The feasibility and effectiveness of the proposed approach lead to an accurate and reliable analytical model able to analyze the influence of the size of natural smoke evacuation vents subjected to the pressure of wind forces.},
 year = {2018}
}

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TY  - JOUR
T1  - Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach
AU  - Rachid Fakir
AU  - Noureddine Barka
AU  - Jean Brousseau
Y1  - 2018/09/25
PY  - 2018
N1  - https://doi.org/10.11648/j.ep.20180201.15
DO  - 10.11648/j.ep.20180201.15
T2  - Engineering Physics
JF  - Engineering Physics
JO  - Engineering Physics
SP  - 23
EP  - 31
PB  - Science Publishing Group
SN  - 2640-1029
UR  - https://doi.org/10.11648/j.ep.20180201.15
AB  - This paper presents an analytical model able to explore the design method of natural smoke evacuation through an exhaust vent subject to wind pressure. The proposed model can be used to determine the flow rate of smoke and the optimal section of the exhaust vent according to the geometric parameters of the room, the heat release rate and the pressure exerted by the wind forces at the exhaust vent. The numerical resolutions of the mathematical equations of the model were performed using the dichotomy method. The proposed analytical approach is built progressively by, (i) the examination of interaction forces between buoyancy forces and wind pressure forces, (ii) a numerical validation of the analytical model using the numerical simulation software Fire Dynamics Simulator, and (iii) proposal of a method of approximation of the optimal section of the exhaust vent for a maximum smoke evacuation rate. The results show very satisfactory and provide adequate prediction of the optimal size of the exhaust vent between the theoretical approximation and various configurations of numerical simulation. The feasibility and effectiveness of the proposed approach lead to an accurate and reliable analytical model able to analyze the influence of the size of natural smoke evacuation vents subjected to the pressure of wind forces.
VL  - 2
IS  - 1
ER  -

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Author Information

Rachid Fakir

Department of Mathematics, Computer Science and Engineering, University of Quebec at Rimouski, Rimouski, Canada
Noureddine Barka

Department of Mathematics, Computer Science and Engineering, University of Quebec at Rimouski, Rimouski, Canada
Jean Brousseau

Department of Mathematics, Computer Science and Engineering, University of Quebec at Rimouski, Rimouski, Canada

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Plain Text BibTeX RIS

APA Style

Rachid Fakir, Noureddine Barka, Jean Brousseau. (2018). Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach. Engineering Physics, 2(1), 23-31. https://doi.org/10.11648/j.ep.20180201.15

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ACS Style

Rachid Fakir; Noureddine Barka; Jean Brousseau. Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach. Eng. Phys. 2018, 2(1), 23-31. doi: 10.11648/j.ep.20180201.15

Copy | Download

AMA Style

Rachid Fakir, Noureddine Barka, Jean Brousseau. Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach. Eng Phys. 2018;2(1):23-31. doi: 10.11648/j.ep.20180201.15

Copy | Download

@article{10.11648/j.ep.20180201.15,
  author = {Rachid Fakir and Noureddine Barka and Jean Brousseau},
  title = {Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach},
  journal = {Engineering Physics},
  volume = {2},
  number = {1},
  pages = {23-31},
  doi = {10.11648/j.ep.20180201.15},
  url = {https://doi.org/10.11648/j.ep.20180201.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ep.20180201.15},
  abstract = {This paper presents an analytical model able to explore the design method of natural smoke evacuation through an exhaust vent subject to wind pressure. The proposed model can be used to determine the flow rate of smoke and the optimal section of the exhaust vent according to the geometric parameters of the room, the heat release rate and the pressure exerted by the wind forces at the exhaust vent. The numerical resolutions of the mathematical equations of the model were performed using the dichotomy method. The proposed analytical approach is built progressively by, (i) the examination of interaction forces between buoyancy forces and wind pressure forces, (ii) a numerical validation of the analytical model using the numerical simulation software Fire Dynamics Simulator, and (iii) proposal of a method of approximation of the optimal section of the exhaust vent for a maximum smoke evacuation rate. The results show very satisfactory and provide adequate prediction of the optimal size of the exhaust vent between the theoretical approximation and various configurations of numerical simulation. The feasibility and effectiveness of the proposed approach lead to an accurate and reliable analytical model able to analyze the influence of the size of natural smoke evacuation vents subjected to the pressure of wind forces.},
 year = {2018}
}

Copy | Download

TY  - JOUR
T1  - Natural Ventilation of Smoke Subject to Wind Pressure Within Fire Safety Engineering Approach
AU  - Rachid Fakir
AU  - Noureddine Barka
AU  - Jean Brousseau
Y1  - 2018/09/25
PY  - 2018
N1  - https://doi.org/10.11648/j.ep.20180201.15
DO  - 10.11648/j.ep.20180201.15
T2  - Engineering Physics
JF  - Engineering Physics
JO  - Engineering Physics
SP  - 23
EP  - 31
PB  - Science Publishing Group
SN  - 2640-1029
UR  - https://doi.org/10.11648/j.ep.20180201.15
AB  - This paper presents an analytical model able to explore the design method of natural smoke evacuation through an exhaust vent subject to wind pressure. The proposed model can be used to determine the flow rate of smoke and the optimal section of the exhaust vent according to the geometric parameters of the room, the heat release rate and the pressure exerted by the wind forces at the exhaust vent. The numerical resolutions of the mathematical equations of the model were performed using the dichotomy method. The proposed analytical approach is built progressively by, (i) the examination of interaction forces between buoyancy forces and wind pressure forces, (ii) a numerical validation of the analytical model using the numerical simulation software Fire Dynamics Simulator, and (iii) proposal of a method of approximation of the optimal section of the exhaust vent for a maximum smoke evacuation rate. The results show very satisfactory and provide adequate prediction of the optimal size of the exhaust vent between the theoretical approximation and various configurations of numerical simulation. The feasibility and effectiveness of the proposed approach lead to an accurate and reliable analytical model able to analyze the influence of the size of natural smoke evacuation vents subjected to the pressure of wind forces.
VL  - 2
IS  - 1
ER  -

Copy | Download