Abstract:Concerning the status of low head and low efficiency of the mixed transmission disc pump when transporting the crude oil,a structure improvement for the original impeller was made,and the solid/liquid two-phase turbulent flow in the pump was simulated by using Eulerian multiphase model,standard turbulence model and SIMPLE algorithm.The distributions of pressure and velocity in the pump and the different relation curves for solid phase particle concentration as function of head,efficiency and mass flow were obtianed.The results show that the static and total pressures keep increasing from inlet to outlet,the maximum pressure appears at the outer wall surface between volute spiral and diffuser.The solid phase particles are mainly concentrated on the surface of blades,so they will aggravate the speed of wear and destroy.The head and efficiency increase slightly when the solid phase particle concentration increases,and the head increases comparing the pre and post curves.
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