Study on the Smoke Flow Regulation in Underground Space Based on the CFD Simulation

Abstract:

The utilization of the underground space mainly focuses on the following aspects: underground traffic, underground commerce, underground garage, underground amusement spots and urban disaster prevention facilities, for example, the air-raid shelters. Based on the analysis of the characteristics and reasons of the fire in the underground buildings, and with a (or a half) basement of the library in a university as its study object, the FDS of the CFD software is used to carry on a field simulation by setting two fire scenarios and five measuring points. This paper also studies the change process of temperature and visibility in different time and different regions and analyzes the smoke movement regulation with model in this underground space. A conclusion is drawn that, the temperature in each measuring point would rise up quickly in a short time with 131 seconds as its available safe egress time (ASET) of the editorial catalogue room, reaching and even surpassing 60 ̊C, as the safety threshold human can withstand, and that finally tend to a relatively stable point.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 858-863
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.858
• Online since: September 2014
• Authors: Yu Wang*
• Keywords: FDS Field Simulation, Smoke Movement Regulation, Underground Space

References

[1] Fumin Jing, A Research Of Strategy On The Preventing and Exhausting Fire Smoke In The Underground Architecture[D], Master's Degree in Harbin Institute of Technology, 2011. (in Chinese).

[2] BinLan, Science and Technology of West China，2002(2): 61-62. (in Chinese).

[3] Rencun Liu, Fire Science and Technology, March2005(24), Supplement: 34-38. (in Chinese).

[4] Xingkai Zhang , Fire Principles and Their Application in Underground Engineering, Beijing, Capital University of Economics & Business Press, 1997: 13-58. (in Chinese).

[5] Qiang Huang , The Development and Utilization of Key Technical Guide in Urban Underground Space[M], Beijing, China Architecture & Building Press, 2004: 197-198. (in Chinese).

[6] Zhen Xu, Fangqin Tang, Aizhu Ren, Fire Science and Technology, August 2010(29): 651-655. (in Chinese).

[7] Chao Xu, Study of Smoke Control and Personnel Evacuation in Harbin Xinjiyuan Underground Commercial Street[D], Master's Degree in Harbin Institute of Technology, 2008: 24-28. (in Chinese).

[8] McGrattan K, Mcdermott R, Hostikka S, Floyd J. Fire Dynamics Simulater(Version 5 )User's Guide [R]. NIST Special Publication 1019-5, National Institute of Standards and Technology(NIST), (2010).

[9] Li Huang, Study on Smoke Spread Law in Underground Commercial Street Fire[D], Master's Degree in AnHui University of Science and Technology, 2012: 4-5. (in Chinese).

[10] Li Yang , Simulation of Fire Smoke Flow in Underground Emporium and Research on Safe Evacuation[D], Master's Degree in Northeastern University, 2008: 10-13. (in Chinese).

[11] Fire Engineering Guidelines, Fire Code Reform Centre, NSW, Australia , (1996).

[12] DGJ 08-88-2006, Technical Specification for Building Smoke Control[S], Engineering Construction Specification of Shanghai, 2006. (in Chinese).