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在德国,已经使用带有数据记录探测系统的现代激光测速仪来测定卡普兰式水轮机转轮。本文对激光功率的效应以及关于测量散布颗粒进行试验性探论,并讨论在叶片流道内所获得速度分布情况。随着水力机械制造工艺的不断发展,必然导致现代测量技术的发展。为检验模型内部的流量,必须注重测量水轮机和水泵转轮的流量。从前,作为非相干光学测量装置,多普勒激光风速仪已获得了成功。由于两束相干激光束相长的消相干扰,多普勒激光测速仪所测的图形为条纹型。相应于粒子速度频
In Germany, Kaplan turbine runners have been tested using modern laser guns with data logging detection systems. This paper examines the effects of laser power and the experimental exploration of measuring scattered particles, and discusses the velocity distribution obtained in the flow path of the vane. With the continuous development of hydraulic machinery manufacturing process, will inevitably lead to the development of modern measurement technology. To test the flow inside the model, one must focus on measuring the flow of the turbine and pump runner. Doppler laser anemometers have been successful as incoherent optical measuring devices. Due to the phase interference of two coherent laser beams, the pattern measured by Doppler laser velocimeter is stripe pattern. Corresponds to the particle velocity frequency