斜板取水头部液固分离模型相似水力计算

Hydraulic Similarity Computation in Model of Separation of Liquid and Solid Particles by Water Intake Head with Inclined Boardings

斜板取水头部能以重力分离液体中的固体颗粒,在河流中取水,则是一种自动除沙器。本文简述了颗粒在斜板上的速度分解,隔层高度和沉降速度的关系式,并着重阐述了斜板取水头部模型相似水力计算和校核方法,研究了原型和模型的水流、泥沙、构筑物之间的关系。可借以确定模型尺寸和其它物理量,并附有计算实例,为检验设计或工程改造提供了参考依据。

The water intake head installed with inclinefd boardings is called laminal sediment precipitation, which separates liquid and solid particles by gravity in two-phase flow. This paper discusses the computation formula of distance H between the two inclined boardings, which indicate that H has a relation with grain precipitation velocity v2. Our discussion, in this paper, centres on hydraulic similarity computation of model with a computation example.