Field evaluation of ultrasonic flowmeters for measuring water discharge in irrigation canals
Field evaluation of ultrasonic flowmeters for measuring water discharge in irrigation canals
复制标题
超声波流量计测量灌溉渠流量的现场评估
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
L. Mateos
中科院分区：
文献类型：
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作者：
David Lozano;L. Mateos
测量水流量对于合理的灌溉管理至关重要。基于声学技术的新型商业流量计在西班牙和其他国家的灌溉计划中用于测量明渠的排水量。有两种主要类型的声学流量计：渡越时间和多普勒。我们在整个灌溉季节在田间测试了每种类型的商业仪器（分别为Risonic 2000和Argonaut‐SW）。这些器械安装在西班牙B-XII灌溉方案中一个二级管道的矩形横截面中。测试的放电量从0.1到4 m3 s-1不等。为了获得参考数据，我们使用了螺旋桨流速计来测量穿过试验渠段的流速。Risonic 2000和Argonaut‐SW仪器提供的测量结果与螺旋桨流量计获得的测量结果高度一致。安装在运河底部的Argonaut‐SW在灌溉季节不得不重新安装两次，因为它被水流拖曳的碎片所取代。安装在运河壁上的Risonic 2000在整个赛季中不间断地运行。版权所有© 2008约翰威利父子有限公司。
Measuring water flow is essential for sound irrigation management. New commercial flowmeters based on acoustic technology have become popular for measuring water discharge in open channels of irrigation schemes in Spain and various other countries. There are two main types of acoustic flowmeter: transit‐time and Doppler. We tested a commercial instrument of each type (a Risonic 2000 and an Argonaut‐SW, respectively) in the field throughout an entire irrigation season. The instruments were installed in rectangular cross‐sections of one of the secondary canals in the B‐XII irrigation scheme, Spain. The discharges tested varied from 0.1 to 4 m3 s−1. To obtain reference data, we used a propeller current meter to measure the flow velocity across the test canal sections. Both the Risonic 2000 and Argonaut‐SW instruments provided measurements that were highly consistent with those obtained from the propeller meter. The Argonaut‐SW, mounted at the bottom of the canal, had to be reinstalled twice during the irrigation season since it was displaced by debris dragged by the flowing water. The Risonic 2000, mounted on the canal walls, operated without interruption during the entire season. Copyright © 2008 John Wiley & Sons, Ltd.