Tip Clearance Optimization of High Speed Engine Pump Based on Simulation and Experimental Verification

An improved program of the tip clearance of a high speed engine pump based on simulation was introduced in this paper. In order to verify its reliability, a device was designed to test the performance of the pump and found that the simulation data was in good agreement with the experiment. Within the scope of work, the improved pump shows excellent performance that the head has an improvement of more than 7m averagely, the efficiency is improved by 10 % to 20 %, and the shaft power has increased about 100Wrespectively.The results confirmed that using this numerical analysis method to optimize the tip clearance of the high speed engine pump was reasonable.