Effect of protection against wind according to the variation porosity of wind fence |
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| Authors: | Ki-Pyo You Young-Moon Kim |
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| Institution: | (1) Department of Architecture and Urban Engineering, Chonbuk National University, Chonju, 561-756, South Korea |
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| Abstract: | This study examines shelter effect against the wind by using wind fence with various porosities and distance. The shelter
effect of wind fence was investigated by a wind tunnel test. Flow characteristics of velocities and turbulences behind wind
fence were measured using a hot-wire anemometer. This was done by varying the porosity by 0, 20, and 40% of the wind fence.
The wind fence distance ranged from 1H to 9H. In addition, the overall characterization of the wind fence was investigated by measuring a total of 28 points on the wind
fence, which forms a lattice structure on it with 7 points in the lateral direction and 4 points in the vertical direction.
The results indicate that the degree of the turbulence is lowered and the velocity of the wind is decreased when porosity
of 40% is used at a distance of 4H–7H. The effectiveness of the wind fence depends on the porosity and distance. Porosity of 20% proved to be effective for the
protection area of 1H–3H, while that of 40% was effective for the protection area of 4H–6H. |
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| Keywords: | Wind fence Porosity Wind tunnel Velocities Turbulences |
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