Abstract：In the pump design,all parts forming the model pump shall be similar geometrically to the corresponding part of actual pump.But in the case of the coarseness test of the model pump,the water flowing surface of discharge performance is equal to the ratio of reduction to actual pump and the gap between the rotating impeller and stationary casing of model pump is not provided a dimensional ratio to the actual pump named dimensional effect.In a addition,the discharge quantity of actual pump shall be in state of coarsely turbulent flow which is converted from the performance of model pump and shall be in state of glossy turbulent flow named Re′s effect,so the values of frictional losses are different between them.Due to these effects the model pump is unsimilar to actual pump.To make the conversion for performance to actural pump from model pump,the value of friction loss of actual pump shall be artifially replaced as a new model pump,then the conversion for performance is made between two similar pumps.
周君亮. 原型及模型泵水力装置参数换算[J]. 排灌机械工程学报, 2009, 27(5): 273-280.
Zhou Junliang. Study of conversion for performance of model pump to actual pump . Journal of Drainage and Irrigation Machinery Engin, 2009, 27(5): 273-280.
[1]周君亮.泵站建设中装置选用问题[J].排灌机械,2001,19(1):3-12.Zhou Junliang.Selection probrems for pump station equipment[J].Drainage and Irrigation Machinery,2001,19(1):3-12.(in Chinese)[2]Japan Association of Agricultureal Engineering Enterprises.Pumping Station Engineering Handbook[M].[S.l.]:[s.n.],1991:36-38.[3]Japanese Standards Association.JISB 8327-2002 Testing methods for performance of pump,using model pump[S].[S.l.]:[s.n.],2003.[4]左东启.水工设计手册[M].第1卷.北京:水利电力出版社,1983.
