Optimizing the coupling of a firebrand generator to a horizontal wind tunnel

Hashempour, Javad and Sharifian, Ahmad (2013) Optimizing the coupling of a firebrand generator to a horizontal wind tunnel. Advanced Materials Research, 726-731. pp. 971-976. ISSN 1022-6680

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Abstract

Australia is considered as the most fire-prone country in the world. Spotting ignition by lofted firebrands is the main mechanism of fire spread. Many experimental studies have been conducted to evaluate the effect of the firebrand attacks on structures and to identify possible solutions. The experimental facility consists of a firebrand generator coupled to a wind tunnel. The wind speed in the firebrand generator is relatively low, in order to assure a quality continuous flow of glowing firebrands. On the contrary, the wind speed in the wind tunnel is high to duplicate actual firebrand attacks. Previous works show a highly turbulent region above the entrance of firebrands to the wind tunnel which is formed because of the velocity difference and penetration of firebrand entrance hose into the wind tunnel. The penetration is required to provide a uniform firebrand distribution along the height of the test section. In this computational work, the influence of the height of the entrance hose, its orientation respect to the tunnel and the distance between the coupling port and the test section are analyzed. The optimized results are presented and discussed for a variety of wind speeds within the wind tunnel and the firebrand generator.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Trans Tech Publications, Switzerland. Series title: Advanced Materials Research v.726-731. Published version deposited in accordance with the copyright policy of the publisher. originally presented at the 2nd International Conference on Energy and Environmental Protection (ICEEP 2013).
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 15 Oct 2013 22:42
Last Modified: 18 Apr 2017 01:06
Uncontrolled Keywords: bushfire; firebrand; wind speed; wind tunnel
Fields of Research : 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040604 Natural Hazards
09 Engineering > 0915 Interdisciplinary Engineering > 091507 Risk Engineering (excl. Earthquake Engineering)
01 Mathematical Sciences > 0103 Numerical and Computational Mathematics > 010303 Optimisation
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.4028/www.scientific.net/AMR.726-731.971
URI: http://eprints.usq.edu.au/id/eprint/24175

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