Direct radiation from wildfires through square woven screens

Sharifian, Ahmad and Buttsworth, David R. (2009) Direct radiation from wildfires through square woven screens. In: ASME 2008: Summer Heat Transfer Conference, 10-14 Aug 2008, Jacksonville, FL. USA.

Abstract

The positioning of a metal mesh between a property and a wildfire not only reduces the threat of ember attack, but can also be effective in reducing the radiation heat flux from the fire to the property. A computational technique is used to establish a view factor correlation for the object-screen-wildfire arrangement for screens consisting of woven wire, square-celled elements. The view factor between the object and fire is calculated separately for each square-celled element of the screen and the results are added. The results indicate that the average view factor between an infinite fire and an object of the same size as the square cell is only related to the porosity of screen and is independent of distance of the object from the screen (when the object is in the proximity of the mesh). The results also show the view factor is less than screen porosity, particularly at lower porosities.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Paper no. HT5/03/2008-56270. Permanent restricted access to paper due to publisher copyright restrictions. This paper is Copyright © 2008 by ASME.
Depositing User: Assoc Prof David Buttsworth
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 31 Mar 2009 12:43
Last Modified: 22 Aug 2014 01:48
Uncontrolled Keywords: wildfire; radiation; screen; bushfires; metal mesh; embers; heat flux
Fields of Research (FOR2008): 09 Engineering > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering
12 Built Environment and Design > 1204 Engineering Design > 120405 Models of Engineering Design
03 Chemical Sciences > 0307 Theoretical and Computational Chemistry > 030702 Radiation and Matter
Socio-Economic Objective (SEO2008): B Economic Development > 86 Manufacturing > 8612 Fabricated Metal Products > 861299 Fabricated Metal Products not elsewhere classified
Identification Number or DOI: doi: 10.1115/HT2008-56270
URI: http://eprints.usq.edu.au/id/eprint/4820

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