회전 용적형 기어펌프에 대한 3차원 캐비테이션 유동해석

A volumetric gear pump is often used in extensive industrial applications to provide both high pressure and sufficiently high flow rate by physical displacement of finite volume of fluid with each revolution. For 3-D CFD simulations, template mesh technique in a commercial software, PumpLinx, by which 3-D meshes in the complex region between rotor and housing can be readily generated was employed. For cavitation analysis, full cavitation model was included. The results showed that significant reverse flow is developed in the rotor clearance and this causes considerable pressure loss at the outlet and reduction of mass flux.