Calculation and analysis of airfoil optimization in artificial flow
CHEN Yunfan1*, CAI Xu2, ZHANG Hua3,4, YANG Chen3, WANG Yuan4, XU Yunfneg5
1. College of Oceanography, Hohai University, Nanjing, Jiangsu 210098, China; 2. Nanjing Yanfeng Adient Seat Co. Ltd., Nanjing, Jiangsu 211500, China; 3. Research Institute of Chemical Machinery, Hefei University of Technology, Hefei, Anhui 230002, China; 4. Research Institute of Nanjing Hegong Intelligent Environmental Protection Co. Ltd., Nanjing, Jiangsu 211500, China;5. Lanshen Co. Ltd., Nanjing, Jiangsu 211500, China
Abstract：Airfoil optimization is an important method in hydraulic machinery design, which can effectively improve the efficiency in artificial flow. Submersible mixer is an important artificial flow-making equipment, and its design is connected with axial flow pump in the background where the domestic mainly relies on experience to meet the needs of engineering selection. The submersible mixer is designed by using axial flow pump airfoil optimization—streamline method, and the polyhedral meshes and boundary prismatic meshes are adopted. It was found after CFD numerical calculation that the designed initial model had better hydraulic effect. On this basis, the distribution of velocity circulation in the initial model was analyzed. The blade was optimized by changing the outlet angle of submersible mixer to change the radial distribution of velocity circulation, and five kinds of optimized hydraulic models of submersible mixer were obtained. Comparative analysis was carried out at constant power. According to the performance evaluation criteria, the loop quantity distribution rule 1 is the airfoil characteristic with the best mixing effect of submersible mixer.
