基于圓柱繞流直徑壓強差的二維風測量方法

劉成; 趙湛; 杜利東; 方震

doi:10.11999/JEIT160468

基于圓柱繞流直徑壓強差的二維風測量方法

doi: 10.11999/JEIT160468

2.
(中國科學院電子學研究所北京 100190) ②(中國科學院大學北京 100049)

基金項目:

公益行業(yè)專項（GYHY201006044），國家自然科學基金(51305423)

計量
- 文章訪問數(shù): 1145
- HTML全文瀏覽量: 109
- PDF下載量: 342
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2016-05-09
- 修回日期: 2016-09-23
- 刊出日期: 2017-03-19

Method of Measuring Two-dimensional Wind Based on Diametrical Pressure Differences Developed by Flow Around Cylinder

2.
(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)

Funds:

Special Fund for Public Welfare (GYHY- 201006044), The National Natural Science Foundation of China (51305423)

摘要

摘要: 基于流量傳感器的圓柱結(jié)構(gòu)2維風傳感器，其測量性能對地面風測量而言不夠準確。由此，該文通過分析風洞實驗數(shù)據(jù)，建立一種數(shù)學模型來描述圓柱繞流中直徑兩端壓強差的分布，并根據(jù)該模型提出一種通過檢測該直徑壓強差來計算風速風向的2維風測量方法。對風洞測試數(shù)據(jù)應用該方法，在2~40 m/s風速范圍內(nèi)，風速計算值誤差不超過(0.2+0.03 V) m/s，風向計算值誤差不超過5。相比使用流量傳感器的圓柱結(jié)構(gòu)2維風傳感器，該方法提高了測量準確度。同時，該方法不需要轉(zhuǎn)動部件，不受機械摩擦和慣性的制約，需要占用的空間小。
- 2維風測量 /
- 圓柱繞流 /
- 直徑壓強差 /
- 風速風向
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.
- Two-dimensional wind measurement /
- Flow around a cylinder /
- Diametrical pressure difference /
- Wind speed and direction

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