摘要
应用商用CFD软件AVL-FIRE对某三缸柴油机迷宫式油气分离器进行CFD分析,模拟迷宫内的流速与压力分布;采用离散模型模拟油滴粒子喷射,假定油滴粒子与壁面碰撞后即被捕捉,进而得出不同直径的油滴分离效率;对比了几种迷宫结构方案的进出口压降以及油气分离效率。结果显示:计算结果虽偏高,但趋势与试验值较吻合,证明了采用CFD技术对油气分离器进行模拟的可行性。
CFD analysis is performed for a labyrinth oil mist separator in a three-cylinder diesel engine with CFD software package AVL-FIRE.The velocity and pressure distribution of the labyrinth is calculated.The discrete model is used to simulate the injection of the oil mist particles.Oil mist particles are assumed to be trapped once they impact the wall,then the separation efficiency of different size of oil mist is obtained.The pressure drop and oil mist separation efficiency of several different labyrinth oil mist separator are compared.The results show that though the simulation results are higher,the trend is consistent with that of test results,which proves the feasibility of using CFD analysis on the simulation of oil mist separator.
出处
《柴油机》
2010年第5期19-22,共4页
Diesel Engine
作者简介
陶丽芳（1981-），女，工程师，主要研究方向为汽车、发动机CFD模拟，E—mail：taolifang@mychery．com。
