柴油发动机丝网过滤器压降数值模拟方法研究  

Study on Numerical Simulation for Pressure Drop in Diesel Engine Metal Mesh Filter Element

作　　者：田聪[1] 李涛 尚涛[1] 

机构地区：[1]吉林大学机械科学与工程学院,吉林长春130022 [2]一汽轿车股份有限公司,吉林长春130000

出　　处：《液压气动与密封》2012年第10期24-27,共4页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金重点项目(50635030)

摘　　要：分析两种典型金属丝网滤芯的物理模型,依据Darcy-Forchheimer定律,建立金属丝网压降计算的数学模型,通过实验法确定模型中渗透率和惯性系数两个参数值。采用计算流体动力学(CFD)软件FLUENT对回形和柱形滤芯进行了数值模拟,验证得出所建模型适用于丝网滤器压降的数值模拟。研究结果为采用工程仿生学原理并进一步研究仿生耦合不粘滤器提供了理论分析基础。Analyzed the physical model of two classical metal mesh filter element,based on Darcy-Forchheimer law the pressure drop mathematic model of metal mesh was set up,and the experimental method for determine permeability and inertia coeffecient were studied.Cylindroid and cuboid filter element were calculated by FLUENT,result indicate the model was suitable for numerical simulate pressure drop of metal mesh filter element.The research offered theoretical basis for the study of bionic coupled non-viscous filter with bionic principle.

关 键 词：微粒捕集器 金属丝网 压降 数值模拟 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]