Effect of a Bottom Gap on the Flow Characteristics behind Non-Planar Porous Fence

Abstract:

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The flow field behind non-planar porous fence of geometric porosity ε=0.273 with various bottom gaps (G) has been investigated by hot-wire anemometer velocity field measurement technique in a wind tunnel experiment. Seven gap ratios G/H=0.000, 0.025, 0.075, 0.125, 0.150, 0.175, 0.200 of non-planar porous fence were tested in this study with the free-stream velocity fixed at 10m/s. The experimental data were analyzed and the turbulence intensity and wind reduction ratios for different gaps of the porous fence were calculated to estimate the shelter effect of a non-planar porous fence model. The results show that the gap ratio G/H=0.150 gives the best shelter effect among the seven gaps of the non-planar porous fence tested in this study, having a better mean velocity and turbulence intensity as well as wind reduction ratio in a large area behind the non-planar porous fence.

Info:

Periodical:

Advanced Materials Research (Volumes 356-360)

Edited by:

Hexing Li, Qunjie Xu and Daquan Zhang

Pages:

1391-1395

DOI:

10.4028/www.scientific.net/AMR.356-360.1391

Citation:

Z. Y. Duan et al., "Effect of a Bottom Gap on the Flow Characteristics behind Non-Planar Porous Fence", Advanced Materials Research, Vols. 356-360, pp. 1391-1395, 2012

Online since:

October 2011

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Price:

$35.00

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