基于圆柱绕流直径压强差的二维风测量方法

发布时间：2018-05-15 02:06

  本文选题：维风测量 + 圆柱绕流　； 参考：《电子与信息学报》2017年03期

【摘要】：基于流量传感器的圆柱结构2维风传感器,其测量性能对地面风测量而言不够准确。由此,该文通过分析风洞实验数据,建立一种数学模型来描述圆柱绕流中直径两端压强差的分布,并根据该模型提出一种通过检测该直径压强差来计算风速风向的2维风测量方法。对风洞测试数据应用该方法,在2~40 m/s风速范围内,风速计算值误差不超过±(0.2+0.03 V)m/s,风向计算值误差不超过±5°。相比使用流量传感器的圆柱结构2维风传感器,该方法提高了测量准确度。同时,该方法不需要转动部件,不受机械摩擦和惯性的制约,需要占用的空间小。
[Abstract]:The measurement performance of the two dimensional wind sensor with cylindrical structure based on the flow sensor is not accurate enough for the surface wind measurement. Thus, by analyzing the experimental data of wind tunnel, a mathematical model is established to describe the distribution of the pressure difference between the two ends of the diameter in the flow around a cylinder. According to the model, a 2-D wind measurement method is proposed to calculate wind speed and wind direction by detecting the diameter pressure difference. The method is applied to the wind tunnel test data. In the range of 2 ~ 40 m / s wind speed, the error of wind speed calculation value is not more than 卤0. 2 0. 03 V / m / s, and the error of wind direction calculation value is not more than 卤5 掳. Compared with the two-dimensional wind sensor with flow sensor, this method improves the accuracy of measurement. At the same time, the method does not need rotating parts and is not restricted by mechanical friction and inertia.
【作者单位】： 中国科学院电子学研究所;中国科学院大学;
【基金】：公益行业专项(GYHY201006044) 国家自然科学基金(51305423)~~
【分类号】：TP212
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本文编号：1890475