Most of the natural river flows are non-uniform, but the start and the startingvelocity drag force formula for formulas are based on uniform flow up.
天然河流大多属于非均匀流,但起动拖曳力公式和起动流速公式都是在均匀流的基础上建立起来的。
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In this paper, the formulas of startingvelocity on cohesive sedimentation are discussed, combined with experiments of natural cohesive sedimentation in Lang-ya Mountain Pumped Storage Power Station.
Starting from the force balance on a solid particle, equations with dimensionless groups were also developed to calaulate the critical settling velocity of particles at the reactor bottom.