Based on mixing fluid continuity equation and Reynold N-S momentum equation, supplementing RNG k-ε-kg model and the full cavitation model the cavitation process was described.This paper completed the numerical simulation of the cavitation in an axial flow pump impeller under the designed operations,the exact cavitation location in the axial flow pump impeller from the simulation results and distribution
situation of vapor volume fraction were obtained.Then completed impeller’s cavitation photography experiments were completed with a high speed digital camera.Finally the experimental results were contrasted and analyzed with the numerical simulation ones, thus numerical simulation’s accuracy was demonstrated.In end, real cavitation in the axial flow pump impeller has opened out through the numerical simulation and the experimental study,which will provide the reliable reference proof for the in-depth cavitation study in the impeller.
