Micrometeorology Measurement by Acoustic Method
Micrometeorology Measurement by Acoustic Method
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声学法微气象测量
DOI：
10.1143/jjap.43.3099
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发表时间：
2004
影响因子：
1.5
通讯作者：
M. Ishii
中科院分区：
文献类型：
--
作者：
K. Mizutani;Keigo Taruishi;Yutaka Hachisuka;Kousuke Kudo;M. Ishii
本文介绍了一种用于微气象测量的风速和风向分布的可视化方法。利用声波传播时间的差异，在测量区域内采用非接触方式测量风速和风向。为了重建二维分布，八个声学换能器沿着唱盘的圆周以相等的间隔安装。在风洞中对系统的可靠性进行了测试。试验分为两种模式：恒定风向下的增加风速模式和恒定风速下的旋转风向模式。对于这两种实验模式，可以重建风速和风向的二维分布。与超声风速计测得的参考值比较，结果吻合较好。
In this paper, we describe a visualization method of wind velocity and direction distributions for micrometeorology measurement. The wind velocity and direction were measured in a noncontact mode within a measurement area using acoustic probes, on the basis of differences of the time of flight of sound. To reconstruct a two-dimensional distribution, eight acoustic transducers were installed at equal intervals along the circumference of a turntable. The reliability of the system was tested in a wind tunnel. The test was performed for two patterns: increasing wind velocity under a constant wind direction, and rotating wind direction under a constant wind velocity. For the two experimental patterns, two-dimensional distributions of the wind velocity and direction could be reconstructed. Compared with a reference measured with an ultrasonic anemometer, our results showed good agreement.