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http://dx.doi.org/10.3795/KSME-B.2007.31.12.971

Numerical Study on Wall Impingement Process of GDI Spray According to Wall Cavity Angle  

Shim, Young-Sam (부산대학교 기계기술연구소)
Kim, Duck-Jool (부산대학교 기계공학부)
Choi, Gyung-Min (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.31, no.12, 2007 , pp. 971-978 More about this Journal
Abstract
A spray-wall impingement process of a hollow-cone fuel spray from the high-pressure swirl injector in the Gasoline Direct Injection (GDI) engine were experimented and calculated at various wall geometries. The Linearized Instability Sheet Atomization (LISA) & the Aerodynamically Progressed Taylor Analogy Breakup (APTAB) model and the Gosman model were applied to model the breakup and the wall impingement process of the hollow-cone fuel spray. The numerical modelings were implemented in the modified KIVA code. The calculation results of spray characteristics, such as a spray development process and a radial distance after wall impingement, compared with the experimental results by the Laser Induced Exciplex Fluorescence (LIEF) technique. The droplet size distribution and the ambient gas velocity field, which are generally difficult to obtain by the experimental methods, were also calculated and discussed. It was found that the radial distance after wall impingement and Sauter Mean Diameter (SMD) decreased with increasing a cavity angle.
Keywords
Gasoline Direct Injection; Fuel Film; Hybrid Breakup Model; Spray-Wall Impingement Model;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 0
연도 인용수 순위
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