【摘要】 本文结合岩滩泄水底孔减压试验,讨论了三个问题.首先,试验中考虑了水体的空化强度,它可用小型文杜里管测量,从而定出抽气真空度;第二,讨论了压力梯度处水中空气对流扩散对空化的作用,并提出了预测空化部位的方法;第三,泄水建筑物初生空化数的决定与试验方式关系很大,文中提出了正确的试验方式.更多还原

【Abstract】 Three problems on the depression test of Yantan outlet are discussed. 1. The cavitation intensing, which may be measured by a small venturi tube must be taken into account, so as to determine the degree of vacuum in the tank. 2. Under the pressure gradient the convective diffusion of air in water exerts a great influene on cavitation is proved, and the method of predicting the positions of cavitation is presented. 3. The cavitation number of a flood—dischange structure in model tests depends greatly on the experiment method. And a proper approach of experiements is presented.更多还原