Numerical analysis of liquid ring vacuum pump by the MPS method considering gas chamber effects and inflow/outflow of liquid and gas

Abstract A numerical method was developed to analyze liquid ring pumps on the basis of the MPS method, which is one of the representative particle methods. A liquid ring pump generates a vacuum by rotating an impeller and creating a liquid ring. The gas is compressed by the liquid ring and is discharged through outlets. The liquid behavior is simulated by the MPS method in two dimensions. The gas pressure, calculated by the equation of state, is used as a boundary condition for the liquid surface pressure. The turbulence effect is calculated by a turbulence model. The effects of inlet and outlet of gas and liquid were considered. The stability and accuracy of the developed method were validated with the experimental data under different suction pressures.