1. Border condition settings

The boundary conditions are set to the total pressure at the entrance. The export boundary is set to quality export to control the traffic of the model. By adjusting the import pressure to change the effective amount of imported imports, the degree of vacuum internal vacuum in the pump is controlled.

2. Cleanification model and turbulent model

The average multi-phase model and Zwart-Gerbe-Blamri airification model are considered to consider the growth and disappearance of the air foam. The saturated steam pressure of the medium is set to 3574Pa, and the average diameter of the empty bubble is 2*10-6m. The turbulence model is used for the RNG model. The main advantage of this model is: Considering the impact of large -scale separation on the wall, it can effectively handle the flow of high strain rate and the degree of streamlined curvature. Therefore Flowing, can get a good result.

3 calculation results analysis

First of all, the single -phase stream field value simulation is performed on the dual -suction pump, and the calculation result is the initial value.