基于液固两相流的过滤器冲蚀磨损数值模拟

Numerical Simulation of Erosion Wear of Filter Based on Liquid/Solid Two-phase Flow

以液压支架反冲洗回液过滤器为研究对象,分析了其组成结构和工作原理,应用FLUENT软件模拟液固两相流对过滤器的冲蚀行为,将滤网和颗粒形状分别用多孔介质模型和DPM模型表征,分析过滤器内部流场分布规律,找出过滤器最易发生磨损的位置。研究结果表明:含固体颗粒的乳化液对反冲洗过滤器产生的冲蚀磨损,主要集中在控制单向阀和回液出口密封圈处,最大磨损率为1.4×10^(-6) kg/(m^2·s)。研究方法对液压支架反冲洗过滤器故障的定性分析、预测和过滤器的结构设计具有一定参考价值。

With the hydraulic support backwash filter as the research object,its structure and working principle were analyzed,and FLUENT software was used to simulate the erosion behavior of liquid-solid two-phase flow to the filter,and the porous medium model and DPM model were used to characterize the filter screen and particle shape,respectively,and analyze the flow field distribution inside the filter in order to find out the location where wear occurs most easily.The research results show that the erosion wear of the emulsion containing the solid particles on the backwash filter was mainly concentrated on control check valve and the return outlet seal ring.The maximum wear rate was 1.4×10-6 kg/(m2·s).The research method provides certain reference for the fault qualitative analysis,prediction and structural design of the hydraulic support backwash filter.