实验获得了激光穿过浑水的功率衰减系数和相干性变化。动态下测量了浑水流动速度和多普勒信号特性。得出激光测速的浑水最佳浓度和极限浓度。并用一简化模型对动态实验进行分析,所得结果与实验一致。

The power attenuation coefficient and the change of the coherence of the laser through the sediment-laden water are obtained in the experiment. In dynamic state the velocity of the sediment-laden flow and Doppler signal characteristics are measured. The optimum concentration and the limitation concentration of the sediment-laden flow for laser Doppler anemometer are obtained. The analysis of dynamic experiment using a simple model is connected and the results of the analysis agree with those of the experiment.