Study on Erosion Characteristics of One-way Valve Based on DPM Solid-Liquid Flow Simulation
Based on computational fluid dynamics(CFD-DPM)and k-ε turbulence model,a particle-flow two-way coupled erosive wear model was established,which having a check valve taken as the object of re-search to analyze the influence of spool opening,particle size and concentration on the wall's erosive wear of the flow-parts.The results show that,the valve clearance is the high-speed zone of particle movement,and the serious wear parts are the bottom angle of the valve core and the cone surface of the valve seat,and the wear at the cone surface of the valve seat is relatively serious.With the increase of the spool open-ing,the velocity of the particles in the valve clearance decreases,and the wear on the flow wall decreases.The erosion rate of the valve core decreases with the increase of the particle size,and the erosion rate of the valve seat increases with the increase of the particle size.When the particle size is 0.5 mm,the maxi-mum erosion rate and the average erosion rate of the valve seat become close to the maximum value.The erosion rate of the valve core and valve seat is positively correlated with the particle concentration,and the wear area at the valve seat increases with the increase of the concentration.
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