Open AccessOptimization for First Stage of Multistage Pump Based on Response Surface Methodology
Author(s) -
Wei Jiang,
Ji Pei,
Wenjie Wang,
Shouqi Yuan
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/627/1/012017
Subject(s) - impeller , centrifugal pump , response surface methodology , point (geometry) , design of experiments , optimal design , central composite design , flow (mathematics) , computational fluid dynamics , specific speed , mathematical optimization , computer science , sensitivity (control systems) , operating point , internal flow , volumetric flow rate , mathematics , control theory (sociology) , mechanical engineering , engineering , mechanics , statistics , geometry , electrical engineering , physics , control (management) , machine learning , electronic engineering , artificial intelligence , aerospace engineering
To improve the efficiency of a multistage centrifugal pump at design point, the response surface methodology was applied to construct an approximation function between the design-point efficiency of the first stage in multistage centrifugal pump and the design variables of the impeller. First, important geometric parameters are selected as factors of a one-factor experimental design. Four parameters that had greater influence on the hydraulic efficiency were screened out from the simulation results using parameter sensitivity analysis. The optimal design points for each level of the parameters were then determined by central composite design and the response surface analysis method. The efficiencies of the impeller schemes generated in the Design-Expert software was executed with CFD. The effects of the single parameters were analysed, and the approximation model solved to find the optimal parameter combination that improve the efficiency by 3.62% at design point. And the inner flow was improved in high flow rate condition.