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Oil-gas Separation Simulation Analysis and Experiment Verification in GDI Engine
Author(s): HU Jing-yan, SU Sheng, WU Feng-kai, HONG Jin, WU Meng-jun
Pages: 38-
42
Year: 2012
Issue:
10
Journal: Hydraulics Pneumatics & Seals
Keyword: 缸内直喷; CFD; 油气分离器; 气液两相流; 油滴直径; 实验;
Abstract: 该文使用CFD仿真分析软件对某缸内直喷发动机油气分离器内气液两相流场进行了数值模拟,分析了三种不同结构(改进前后)迷宫式油气分离器的流动分布、压力损失,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,进而得出不同直径油滴的油气分离效率,并设计了一个简单而有效的试验方法对油气分离器分离效率间接进行验证.结果表明,采用CFD软件模拟计算方法能够计算出油气分离器油气分离效率,获得的结果反映了流动本质,根据所需要的油气分离效率优化设计油气分离结构,满足最终产品要求.
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