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    Numerical Simulation of the Evacuation Process and Smoke Propagation Due to a Fire in a Road Tunnel With Transverse Ventilation System

    Source: Journal of Thermal Science and Engineering Applications:;2020:;volume( 013 ):;issue: 003::page 031015-1
    Author:
    Halawa, Taher
    DOI: 10.1115/1.4047523
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Fire accidents in road tunnels can form a great danger in the life of people if the evacuation process does not happen effectively. This paper introduces a numerical investigation of fire and evacuation analysis in a road tunnel and provides important insights into the conditions that people are exposed to during evacuation. The fire was assumed to originate from a bus with a fire size of 30 MW at the moment corresponding to the peak heat release rate. Results including smoke distribution, visibility distribution, paths of people during evacuation, people existence density, and people speed are presented and analyzed. One of the important findings of this paper is the estimation of the time available for people to evacuate safely before the approach of the smoke layer to the occupation zone causing deterioration of the visibility values. The discussion introduced a clarification of the connection between the time of exposure to smoke, people speed, and smoke propagation speed. Results showed that the time of exposure to smoke during evacuation can be significantly increased if the fire size is increased especially for persons located within 15 m from the fire location and take more than 2 min to take the decision of evacuation.
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      Numerical Simulation of the Evacuation Process and Smoke Propagation Due to a Fire in a Road Tunnel With Transverse Ventilation System

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4276850
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    • Journal of Thermal Science and Engineering Applications

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    contributor authorHalawa, Taher
    date accessioned2022-02-05T22:04:13Z
    date available2022-02-05T22:04:13Z
    date copyright10/27/2020 12:00:00 AM
    date issued2020
    identifier issn1948-5085
    identifier othertsea_13_3_031015.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4276850
    description abstractFire accidents in road tunnels can form a great danger in the life of people if the evacuation process does not happen effectively. This paper introduces a numerical investigation of fire and evacuation analysis in a road tunnel and provides important insights into the conditions that people are exposed to during evacuation. The fire was assumed to originate from a bus with a fire size of 30 MW at the moment corresponding to the peak heat release rate. Results including smoke distribution, visibility distribution, paths of people during evacuation, people existence density, and people speed are presented and analyzed. One of the important findings of this paper is the estimation of the time available for people to evacuate safely before the approach of the smoke layer to the occupation zone causing deterioration of the visibility values. The discussion introduced a clarification of the connection between the time of exposure to smoke, people speed, and smoke propagation speed. Results showed that the time of exposure to smoke during evacuation can be significantly increased if the fire size is increased especially for persons located within 15 m from the fire location and take more than 2 min to take the decision of evacuation.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleNumerical Simulation of the Evacuation Process and Smoke Propagation Due to a Fire in a Road Tunnel With Transverse Ventilation System
    typeJournal Paper
    journal volume13
    journal issue3
    journal titleJournal of Thermal Science and Engineering Applications
    identifier doi10.1115/1.4047523
    journal fristpage031015-1
    journal lastpage031015-17
    page17
    treeJournal of Thermal Science and Engineering Applications:;2020:;volume( 013 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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