Calculation of fuel spray impingement and fuel film formation in an HSDI diesel engine

被引:0
|
作者
Manshik Kim
Kyoungdong Min
机构
[1] Seoul National University,School of Mechanical and Aerospace Engineering
来源
KSME International Journal | 2002年 / 16卷
关键词
Spray Impingement; Fuel Film Formation; Cavitation; HSDI Diesel Engine;
D O I
暂无
中图分类号
学科分类号
摘要
Spray impingement and fuel film formation models with cavitation have been developed and incorporated into the computational fluid dynamics code, STAR-CD. The spray/wall interaction process was modeled by considering the effects of surface temperature conditions and fuel film formation. The behavior of fuel droplets after impingement was divided into rebound, spread and splash using the Weber number and parameter\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $$K(\sqrt {We\sqrt {Re} } )$$ \end{document}. The spray impingement model accounts for mass conservation, energy conservation, and heat transfer to the impinging droplets. The fuel film formation model was developed by integrating the continuity, momentum, and energy equations along the direction of fuel film thickness. Zero dimensional cavitation model was adopted in order to consider the cavitation phenomena and to give reasonable initial conditions for spray injection. Numerical simulations of spray tip penetration, spray impingement patterns, and the mass of film-state fuel matched well with the experimental data. The spray impingement and fuel film formation models have been applied to study spray/wall impingement in high-speed direct injection diesel engines.
引用
收藏
页码:376 / 385
页数:9
相关论文
empty
未找到相关数据