CAJ | 학술논문

采用计算流体力学（CFD）的方法建立网式航空滑油滤的数学模型。利用多孔介质模型来模拟滤网的阻力效应，用多孔阶跃面代替滤网来模拟滤网的压降；应用离散相模型模拟过滤效率，在多孔阶跃面上应用用户自定义函数（UDF）对颗粒进行捕集，对该模型进行计算，得到过滤器的三维内部流场分布及其压力损失和过滤效率与润滑油进口速度的关系，为航空滑油滤的优化设计提供了参考。
채용계산류체역학（CFD）적방법건립망식항공활유려적수학모형。이용다공개질모형래모의려망적조력효응，용다공계약면대체려망래모의려망적압강；응용리산상모형모의과려효솔，재다공계약면상응용용호자정의함수（UDF）대과립진행포집，대해모형진행계산，득도과려기적삼유내부류장분포급기압력손실화과려효솔여윤활유진구속도적관계，위항공활유려적우화설계제공료삼고。
The mathematical model of the aviation oil filter was built by the computational fluid dynamics(CFD)meth-od.The effect of resistance on the filter was simulated based on the porous media model,and the filter was replaced by por-ous jump surfaces(porous jump)to imitate the filter pressure drop.The filtration efficiency was simulated by the discrete phase model(DPM),and the user-defined function(UDF)was applied to the surface of the porous jump for trapping parti-cles in the calculation.The flow field of the aviation oil filter was analyzed,and the relationships between the pressure loss, filtration efficiency of aviation oil filter and the oil inlet velocity were researched,which provided a reference for the avia-tion oil filter structure optimization.