This paper is published in Volume-7, Issue-1, 2021
Area
CFD of Smoke Management System
Author
Mohamed H. Ahmed, Mahmoud M. Kamal, Hamdy A. Abotaleb
Org/Univ
Faculty of Engineering - Ain Shams University, Cairo, Egypt, Egypt
Pub. Date
16 January, 2021
Paper ID
V7I1-1169
Publisher
Keywords
CFD, Atrium, Smoke Propagation, Visibility, Heat Release

Citationsacebook

IEEE
Mohamed H. Ahmed, Mahmoud M. Kamal, Hamdy A. Abotaleb. Numerical investigation on a smoke management system in an administration building’s atrium, International Journal of Advance Research, Ideas and Innovations in Technology, www.IJARIIT.com.

APA
Mohamed H. Ahmed, Mahmoud M. Kamal, Hamdy A. Abotaleb (2021). Numerical investigation on a smoke management system in an administration building’s atrium. International Journal of Advance Research, Ideas and Innovations in Technology, 7(1) www.IJARIIT.com.

MLA
Mohamed H. Ahmed, Mahmoud M. Kamal, Hamdy A. Abotaleb. "Numerical investigation on a smoke management system in an administration building’s atrium." International Journal of Advance Research, Ideas and Innovations in Technology 7.1 (2021). www.IJARIIT.com.

Abstract

Smoke is considered the major reason for killing a lot of people in case of a building fire because of the reduction of visibility and asphyxiation fatalities that occurred in the smoke event. The present research illustrates a numerical simulation on smoke propagation and smoke control for the atrium in an administration building and investigates the effect of exhausting smoke by multi-point extraction through rooftop exhaust fans on smoke layer height inside the atrium. ANSYS-FLUENT solver is used to solving two-dimensional Reynolds-averaged Navier-Stokes equations (RANS) combined with K-ε Realizable turbulence model for different study cases in an atrium. The two-dimensional rectangular plan that is located at the center of the atrium is simulated with the dimensions of 25m width and 20m height using T-squared fire with the maximum heat release rate of 5 MW for 180 seconds. All parameters are predicted at vertical levels of 2, 13 and 17 m height from the ground floor. Results show that exhausting the smoke through rooftop exhaust fans maintains the smoke layer at a higher level from the ground and has a better effect on tenability conditions at the human level, increasing makeup air inlets levels adversely affect smoke layer height which reduces visibility at a human level. Finally, the spacing between extract fans outlet is considered a major factor that should be optimized in order to avoid the plug-holing phenomena.
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