Optimal design of multi-conditions for axial flow pump

28th IAHR symposium on Hydraulic Machinery and Systems

Shi, L.J.^1 ; Tang, F.P.^1 ; Liu, C.^1 ; Xie, R.S.^1 ; Zhang, W.P.^1

School of Hydraulic Energy and Power Engineering, Yangzhou University, No.131 Jiang yang Middle Road, Yangzhou

225100, China^1

关键词: Design condition;    Efficiency curves;    Experiment study;    Geometric design parameters;    Multi-operation conditions;    Numerical optimization techniques;    Operational requirements;    Optimization design;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/49/6/062028/pdf
DOI  :  10.1088/1755-1315/49/6/062028

来源: IOP

【 摘 要 】

Passage components of the pump device will have a negative flow state when axial pump run off the design condition. Combined with model tests of axial flow pump, this paper use numerical simulation and numerical optimization techniques, and change geometric design parameters of the impeller to optimal design of multi conditions for Axial Flow Pump, in order to improve the efficiency of non-design conditions, broad the high efficient district and reduce operating cost. The results show that, efficiency curve of optimized significantly wider than the initial one without optimization. The efficiency of low flow working point increased by about 2.6%, the designed working point increased by about 0.5%, and the high flow working point increased the most, about 7.4%. The change range of head is small, so all working point can meet the operational requirements. That will greatly reduce operating costs and shorten the period of optimal design. This paper adopted the CFD simulation as the subject analysis, combined with experiment study, instead of artificial way of optimization design with experience, which proves the reliability and efficiency of the optimization design of multi-operation conditions of axial-flow pump device.