Numerical simulation and experiment on internal flow characteristics of axial-flow nuclear reactor coolant pump
An axial-flow nuclear reactor coolant pump was taken as the research object,and a method of employing a combination of numerical calculation and experimental research was adopted.The SST k-ω turbulence model was used,and 0.9Q,1.OQ,and 1.1Q were selected as working conditions to analyze the internal flow characteristics of the axial-flow nuclear reactor coolant pump.The experimental verification was completed on the comprehensive performance test bench of the pump.When analyzing the calculation results,the velocity streamline diagram and velocity distribution cloud diagram of the center section of the pump outlet were examined in detail to explore the differences in the internal flow patterns and their evolution trends of the pump under different flow conditions.The pressure-velocity cloud diagrams of the rotating surfaces of the impeller and guide vane blade channels,and the blade pressure-load curves of the impeller blades and guide vane blades were ex-tracted,and the internal flow structure and its changing law of the pump under different flow rates were compared and analyzed to further reveal the flow distribution and energy conversion mechanism inside the impeller and guide vanes.The numerical calculation was compared and verified through experi-ments.The calculated results are basically consistent with the experimental results.The head simulation value is 3.87％lower than the experimental value,and the efficiency simulation value is 1.94％lower than the experimental value.This research work deeply reveals the internal flow characteristics of the axial-flow nuclear reactor coolant pump,which is very important to fully understand the correlation be-tween the hydraulic structure and internal flow of the nuclear reactor coolant pump,and provides a reference for the design and performance optimization of the axial-flow nuclear reactor coolant pump.
axial-flow nuclear reactor coolant pumpinternal flow characteristicsnumerical simulation and experimentturbulence model
万方数据
维普
