Abstract
The paper presents a CFD model of an external gear pump. To investigate the fluid flow phenomena that occur in external gear pumps, one of the commercial CFD software packages was selected. The immersed solid method was used to simulate the flows induced by the rotation of gears. The article presents results of simulation studies carried out for various operating parameters of a chosen external gear pump. Prepared 2D CFD model was used to consider the influence of rotational speed and the pressure in the outlet channel on the cavitation intensity. Furthermore, the 3D simulation model was prepared to verify the pressure relief groves impact on the pressure distribution and velocity contours in the area of gears engagement, as well as mass flow rate and pressure pulsation on the outlet.
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