Optimum Design for Suction Chambers of Pipeline Pumps Based on Uniform Design and CFD

Based on the maximal velocity distribution uniformity, the minimal velocity-weighed average bias angle of the outlet section and the minimal hydraulic loss of the suction chamber, three optimum object functions of suction chambers of pipeline pumps are established. According to uniform design, ten optimum schemes are determined with the height H₃ and the length L as the optimum parameters, and internal flows of the pipeline pump in different schemes are simulated with steady flow hypothesis and Computational Fluid Dynamics (CFD) commercial code FLUENT 6.2. At the same time, values of optimum object functions in different schemes are calculated. The regression analysis is applied to deal with optimum results, and three regression models of optimum object functions are established. By calculation, the best parameters are achieved when H₃ equals to 75.00 mm and L equals to 215.00 mm. The research results can be used to instruct the chamber hydraulic design of pipeline pump and the optimization method also can be used to improve the performance of the other type pump suction chambers.