摘要
内燃机空气滤清器的内部灰尘颗粒轨迹,很难用检测手段获得。本文建立了空气滤清器内气固两相流的流动模型,运用计算流体力学软件STAR-CD对内燃机空气滤清器内部气固两相流场进行仿真,得到了灰尘颗粒轨迹仿真图像。采用SIMPLE方法计算了滤清器入口部分的气相三维流场,采用Lagrange分析方法推导了分散相的控制方程,在计算气相三维流场的基础上,得出了入口处各个位置的分散相固体颗粒的运动轨迹。解决了用测试方法难以得到空气滤清器内部灰尘颗粒轨迹的问题。
It is hard to detect the trajectory of dust particles in air filter of internal combustion engine.In this paper,gas-solid two-phase flow model in air filter is established.Gas-solid two-phase flow in the inlet part of air filter of internal combustion engine is studied through CFD software STAR-CD,and gas-solid two-phase flow image is simulated.SIMPLE algorithm is applied to simulate three-dimensional turbulence of gas phase in the inlet part of air filter.Lagrange methodology is used to derive the governin...
基金
山东省优秀中青年科学家科研奖励基金(01BS40)
关键词
内燃机
空气滤清器
灰尘颗粒轨迹
internal combustion engine
air filter
trajectory of dust particles
