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Ghassabi, Ghodrat, Moghaddam, Mahmood, Noorbakhsh, Seyed Sajad, Yeganeh, Frahad. (1404). Numerical Simulation of the Impact of Smoke Management Scenarios on Visibility of a Car Park. نشریه مهندسی عمران امیرکبیر, 9(2), 113-122. doi: 10.22060/ajme.2025.23512.6140
Ghodrat Ghassabi; Mahmood Moghaddam; Seyed Sajad Noorbakhsh; Frahad Yeganeh. "Numerical Simulation of the Impact of Smoke Management Scenarios on Visibility of a Car Park". نشریه مهندسی عمران امیرکبیر, 9, 2, 1404, 113-122. doi: 10.22060/ajme.2025.23512.6140
Ghassabi, Ghodrat, Moghaddam, Mahmood, Noorbakhsh, Seyed Sajad, Yeganeh, Frahad. (1404). 'Numerical Simulation of the Impact of Smoke Management Scenarios on Visibility of a Car Park', نشریه مهندسی عمران امیرکبیر, 9(2), pp. 113-122. doi: 10.22060/ajme.2025.23512.6140
Ghassabi, Ghodrat, Moghaddam, Mahmood, Noorbakhsh, Seyed Sajad, Yeganeh, Frahad. Numerical Simulation of the Impact of Smoke Management Scenarios on Visibility of a Car Park. نشریه مهندسی عمران امیرکبیر, 1404; 9(2): 113-122. doi: 10.22060/ajme.2025.23512.6140

Numerical Simulation of the Impact of Smoke Management Scenarios on Visibility of a Car Park

AUT Journal of Mechanical Engineering
دوره 9، شماره 2، 2025، صفحه 113-122    اصل مقاله (1.93 M)
نوع مقاله: Research Article
شناسه دیجیتال (DOI): 10.22060/ajme.2025.23512.6140
نویسندگان
Ghodrat Ghassabi* 1؛ Mahmood Moghaddam2؛ Seyed Sajad Noorbakhsh1؛ Frahad Yeganeh1
1Mechanical Engineering Department, Engineering Faculty, Bozorgmehr University of Qenat, Qaen, Iran
2Arman Tahviye Sanabad Company, Mashhad, Iran
چکیده
The mechanical ventilation smoke management system involves the use of supply fan, jet fan, and exhaust fans, which are activated at different times after a fire is extinguished. This paper numerically investigates the effect of the priority and delay of smoke management systems on smoke distribution and visibility in a car park after a fire, using Fire Dynamic Simulation Code 6.7.6. The flow rates of the exhaust fan, supply fan and jet fan are 1.9 m³/s, 1.43 m³/s, and 1.67 m³/s, respectively. The fire, located near the supply fans, is modeled as a rectangle with dimensions of 2.0 × 0.8 m² and a power of 1.6 MW, lasting for one minute from ignition to extinguishment. Polyurethane is assumed as the flammable material. The priority and delay of the smoke management systems are evaluated through four scenarios over a period of 420 seconds. The results show that visibility reaches acceptable levels in all scenarios at all locations after 420 seconds. Additionally, the results indicate that the visibility of the upper half is highest for scenario a, at around 15 m. However, the visibility of the lower half is highest for scenario d, ranging between 20 and 30 m. It can be concluded that delaying the activation of smoke management systems is an effective strategy for facilitating smoke removal and fresh air intake.
کلیدواژه‌ها
Fire dynamic simulation؛ Fire؛ Supply Fan؛ Jet Fan؛ Exhaust Fan
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