Research on the Filtering Mechanism and Influencing Factors of Square Hole Filter for Aviation Fuel System
The square hole filter is a typical pollution control component in aviation fuel systems,which is prone to blockage and other problems,seriously affecting the reliability of the filter and system.This article uses fluid simulation software to establish a simplified model of square hole filter screen.The CFD-DEM coupling method is used to study the filtration process of square hole filter screen components,and the influence of oil cleanliness and filter screen accuracy on filtration efficiency is analyzed.The results show that in the early stage of filter filtration,the main focus is on surface medium filtration,and the particle group smaller than the mesh size is the key to interception in the middle stage of filter filtration.The particle concentration and filter accuracy have a significant impact on the filtration efficiency of the filter.The higher the particle concentration,the lower the particle filtration efficiency;There are significant differences in the filtration efficiency of the same particles when passing through different specifications of filters.The smaller the filter size,the lower the filtration speed,the higher the filtration efficiency,and the more particles are intercepted.Under the condition of ensuring filtration performance,the accuracy of selecting filter specifications can be improved by one level.
万方数据
维普
