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Method of Measuring Two-dimensional Wind Based on Diametrical Pressure Differences Developed by Flow Around Cylinder |
LIU Cheng①② ZHAO Zhan① DU Lidong① FANG Zhen① |
①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
②(University of Chinese Academy of Sciences, Beijing 100049, China) |
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Abstract The cylindrical two-dimensional wind sensor employing flow meters is not accurate enough for surface wind measurement. By analyzing the data from wind tunnel experiments, a model is proposed to describe the diametrical pressure differences developed by the flow around a circular cylinder. A method is derived from the model for two-dimensional wind measurement by detecting the diametrical pressure differences. When the proposed method is applied to the data from wind tunnel tests in range of 2~40 m/s, the relative wind speed errors and the wind direction errors are no more than ±(0.2+0.03 V) m/s and ±5° respectively. The proposed method is more accurate than the cylindrical two-dimensional wind sensor using flow meters. Without moving parts, the method is immune to mechanical wear and inertia.
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Received: 09 May 2016
Published: 14 November 2016
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Fund: Special Fund for Public Welfare (GYHY- 201006044), The National Natural Science Foundation of China (51305423) |
Corresponding Authors:
ZHAO Zhan
E-mail: zhaozhan@mail.ie.ac.cn
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