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为研究声学多普勒测速仪(ADV)在挟沙水流中进行流速测量的适用情况,提高ADV测流精度,在自循环水槽中开展了水温、盐度、颗粒浓度、粒径等对ADV信号强度影响的实验研究。实验结果表明:在一定水温范围内,信号强度与水温之间呈现较好的正相关关系;水体盐度对信号强度没有明显影响;颗粒浓度及粒径与信号强度并非呈单一的相关关系,存在明显的转折区,在转折区前后,分别呈现正相关和负相关关系。
In order to study the application of Acoustic Doppler velocimetry (ADV) in velocity measurement in sediment-laden water flow and to improve the accuracy of ADV flow measurement, water temperature, salinity, particle concentration, Experimental Study on the Effect of Strength. The experimental results show that there is a good positive correlation between signal intensity and water temperature in a certain water temperature range. The salinity of water has no obvious effect on the signal intensity. The particle concentration and particle size are not correlated with the signal intensity. The obvious turning point, before and after the turning point, showed a positive correlation and a negative correlation respectively.