|Title||김동훈, 김기현, 배충식, "분열 모델에 따른 디젤 분무 특성 비교", 2011 한국자동차공학회 부문종합 학술대회논문집, vol, 1, pp153-158,2011.11|
김동훈, 김기현, 배충식, “분열 모델에 따른 디젤 분무 특성 비교”, 2011 한국자동차공학회 부문종합 학술대회논문집, vol, 1, pp153-158,2011.11
CFD (Computational Fluid Dynamics) method has been widely used to analyze internal combustion engines during the last few years. In CFD methods, there are many models to describe physical phenomena; combustion, spray breakup, and spray-wall impingement. Especially in a diesel engine, fuel spray characteristics are calculated with many models such as breakup, collision, evaporation, etc. Fuel spray characteristics, such as spray tip penetration length and spray angle, are major factors that affect heat release rate and fuel efficiency in internal combustion engine, so understanding of fuel spray characteristics is very important. In this paper, we used OpenFOAM (Open Field Operation and Manipulation) as a CFD tool and calculated diesel spray characteristics with three breakup models; RD (Reitz and Diwakar), KH/RT (Kelvin-Helmholtz / Rayleight-Taylor), and ETAB (Enhanced Taylor Analogy Breakup) models. OpenFOAM is a free open source CFD package released in 2004. Calculated results were validated with experimental data and KH/RT model had great accuracy.