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오늘 본 자료
Wind Behavior Analysis of Wind Protection Net System in Typhoon
Shigeru UEZATO,Maro TAMAKI,Shiro TAMAKI,Tomokazu NAGATA,Mohd Abdur RASHID 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
Field test of a wind protection net system for agricultural fields from typhoon attacks is presented. The field test was carried out in Okinawa under the real typhoon attack numbered 0210. The net system consists of 2 pieces of windbreak nets that are placed at different height with a horizontal gap. Wind speeds at several points inside and outside of the net system were measured, and the wind speed reduction ratio by the net system was calculated from the average wind speed. The wavelet transformation analysis was applied to estimate the transient fluctuation of the wind direction and speed. Three-dimensional wind vector data were analyzed to observe 3-dimensional behaviors of the wind both inside and outside of the net system.