|
|
|
| Optimization design of mixed-flow pump with high head based on orthogonal test |
| LI Yanjun,WU Tiancheng,WANG Wenjie*,PEI Ji |
| National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
|
|
|
|
Abstract The orthogonal design software SPSS was used to design the orthogonal test scheme of four factors and four values including inlet angle, outlet angle, wrap angle, outer diameter of impeller, etc. Three-dimensional numerical simulation of the 16 designed impellers were carried out with CFD software ANSYS CFX. Range analysis was used to analyze the influence of various factors on the head and efficiency. Then an optimal scheme was put forward. The feasibility of the preferred scheme was verified by comparing and analyzing the internal flow of the original model and the optimized model. The results show that the outlet angle has the greatest influence on the head, and the blade wrap angle has the greatest influence on the efficiency. At the designed flow rate, the head and efficiency of the optimum program to both head and efficiency were improved. The flow pattern in the pump section was better and the pressure distribution was uniform, which is up to the optimal goal. Therefore, the optimization of the high-head mixed-flow pump based on the orthogonal test is feasible. The parameters of the preferred scheme can effectively reduce the hydraulic loss of the high-head mixed-flow pump and improve its hydraulic performance and internal flow.
|
|
Received: 26 November 2019
|
|
|
|
|
|
|
