A computational technique is used to establish a view factor correlation for the target-object — screen — bushfire arrangement for aligned, double-layered screens consisting of woven wire, square-celled elements. The results indicate that the average view factor between an infinite fire and a target object of the same size as the square cell is related to the porosity of screens. The spacing of two layers only affects the view factor if two screen layers are very close. The results also show that it is possible to block up to about 98% of the direct radiant heat flux by using a low porosity (25%) double-layered screen.
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Mahbub, M.D. and Zhou, Y., ‘‘Dependence of Strouhal Number, Drag and Lift on the Ratio of Cylinder Diameters in a Two-tandem Cylinder Wake,’’ In: Jacobs, P. et al., eds, Proceedings of the 16th Australasian Fluid Mechanics Conference, Brisbane , Australia, University of Queensland, pp. 750-757, 2007.
10.
Meneghini, J.R., Siqueira, C.L.R. and Ferrari , J.A., ‘‘Numerical Simulation of Flow of Interference between Two Circular Cylinders in Tandem and Side by Side Arrangements,’’Journal of Fluids and Structures, Vol. 15, No. 2, 2001, pp. 327-350.
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