An inverse computation of a gas-liquid two-phase flow pump impeller is presented. In this computation the blade geometry of impeller is designed according to specified blade bound circulation distribution and normal thickness distribution on a given meridional geometry. The three-dimensional flow through impeller is decomposed into a circumferentially averaged mean flow and a periodic flow according to flow periodicity. The periodic flow is computed by using the Clebsch formulation and the mean flow is computed by solving a derived flow governing equation of stream function. The shape of blade is determined by imposing inviscid slip condition to blade surfaces. An efficient distribution function is presented for specifying of blade bound circulation distribution according to flow characteristics of hydraulic machinery. Numerical simulation shows that the designed impeller meets the design requirement of circulation distribution well Experiment has proved the performance of designed impeller for gas-liquid two-phase flow.
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