Numerical simulation optimization of axial flow pump device for elbow inlet channel. Issue 3 (March 2019) - Xie, Chuanliu
Abstract: Based on RNG k-ε turbulence model, three-dimensional simulation of a prototype axial flow pump device for an elbow inlet channel. The optimization strategy of the first part and then the whole part is used to optimize the elbow inlet flow channel and then optimize the outlet flow channel through the integral pump device. The optimization results show that the elbow-type inflow channel recommends the optimization of the inflow channel optimization scheme II, hydraulic loss reduced from 3.4cm to 2.8cm, uniformity of flow rate increased from 96.0% to 96.6% according to the comparison and analysis of the inflow channel optimization; for the comparison and analysis of the outlet flow optimization, the siphon outlet flow channel is recommended to optimize the outlet flow optimization scheme VI, the backflow of the outlet flow channel was eliminated and the hydraulic loss was reduced from 31cm to 29cm.;both 1# impeller and 2# impeller meet the pump station operation requirements when the blade installation angle is -4 degrees. From the perspective of full operating conditions, the 2# impeller has the highest efficiency weight.