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http://dx.doi.org/10.7731/KIFSE.2018.32.6.015

Numerical Simulation on Smoke Movement in Multi-Compartment Enclosure Fires under Pressurized Air Supply Conditions  

Ko, Gwon Hyun (School of Safety Engineering, Dongyang University)
Publication Information
Fire Science and Engineering / v.32, no.6, 2018 , pp. 15-21 More about this Journal
Abstract
This study examined the flow characteristics of fire smoke under pressurized air ventilation conditions by carrying out fire simulations on multi-compartment enclosure, including room, ancillary room and stair case. Fire simulations were conducted for the air-leakage test facility, which was constructed to measure the effective leakage area and aimed to improve the understandings of fire and smoke movement by analyzing the overall behaviors of fire smoke flow and pressure distributions of each compartment. The simulation results showed that the heat release rate of the fires was controlled sensitively by the amount of air supplied by the ventilation system. An analysis of the velocity distributions between the room and ancillary room showed that fire smoke could be leaked to the ancillary room through the upper layer of the door, even under pressurized air supply conditions. From these results, it was confirmed that the fire size and spatial characteristics should be considered for the design and application of a smoke control system by a pressurized air supply.
Keywords
Smoke control system; Pressurized air supply; Fire simulation; Fire smoke movement;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 J. G. Quintiere, "Fundamentals of Fire Phenomena", John Wiley & Sons Ltd., Chichester, UK (2006).
2 M. J. Lee, N. I. Kim and H. S. Ryou, "Air Tightness Measurement with Transient Methods using Sudden Expansion from a Compressed Chamber", Building and Environment Vol. 46, No. 10, pp. 1937-1945 (2011).   DOI
3 H. J. Moon, G. H. Ko and H. S. Ryou, "Numerical Study on the Effect of Damper Position on Characteristics of Thermal Flow at the Vestibules and Fire Door", Journal of Korean Institute of Fire Science & Engineering, Vol. 27, No. 1, pp. 31-38 (2013).
4 J. Y. Kim and C. S. Ahn, "Case Study of a Field Test for a Smoke Control System Using Sandwich Pressurization", Fire Science and Engineering, Vol. 30, No. 5, pp. 87-92 (2016).   DOI
5 W. J. You, G. H. Ko, S. H. Sakong. J. S. Nam and H. S. Ryou, "An Analysis on the Major Parameter and the Relations of Pressure Difference Effect of Leakage Area in the Smoke-Control Zone", Journal of Korean Institute of Fire Science & Engineering, Vol. 27, No. 1, pp. 20-25 (2013).
6 J. B. Lee, J. H. Moon, S. H. Lee and H. S. Ryou, "Study of Smoke Behavior and Differential Pressure in the Refuge Safety Area According to Damper Capacity of Smoke Control", Journal of Korean Institute of Fire Science & Engineering, Vol. 25, No. 4, pp. 103-109 (2011).
7 J. Y. Kim and H. J. Shin, "Numerical Analysis on Pressurization System of Smoke Control in Consideration of Flow Rate of Supply and Leakage", Journal of Korean Institute of Fire Science & Engineering, Vol. 24, No. 5, pp. 87-93 (2010).
8 J. H. Kwark, "Standardization of the Performance Test Procedure for Smoke Control System", Transaction of Korean Institute of Fire Science & Engineering, Vol. 20, No. 3, pp. 21-28 (2006).
9 G. H. Ko, "Numerical Analysis on Flow Characteristics in the Pressurized Air Supply Smoke Control System", Fire Science and Engineering, Vol. 31, No, 4 pp. 52-58 (2017).   DOI
10 Ministry of Public Safety and Security, "NFSC 501 Fire Safety Standard of Smoke Control Facilities" (2016).
11 K. B. McGrattan, S. Hostikka, J. E. Floyd, H. R. Baum and R. G. Rehm, "Fire Dynamics Simulator (Version 5), Technical Reference Guide," NIST SP 1018-5, NIST (2007).