Numerical Simulation of High Density-High Speed Combustion Process in Diesel Engine

doi:10.3969/j.issn.1000-1093.2012.12.005

Abstract

Abstract: For the combustion progress changes of diesel engine with high specific power，study of submodels for combustion analysis of the high densityhigh speed combustion was carried out by a CFD code Fire. The key parameters of spray breakup model WAVE model and turbulence controlled combustion model eddy breakup (EBU) model were calibrated with experimental results of a single cylinder diesel. The combustion was numerated，with full load condition at constant speed of 3 600 r/min. The simulated result shows that the combustion parameters such as cylinder average pressure，indicated power and heat release rate are in well coincident with the experiment results. The fuel distribution in cylinder is a good condition，the temperature distribution is uniform. The method of CFD modeling is valid to simulate the high densityhigh speed diesel combustion.

Key words: power machinery and engineering, diesel engine, high density-high speed combustion, CFD
model, experimental verification

CLC Number:

TK421.2

YOU Guo-dong, SU Tie-xiong, SUN Li-wei, XU Jun-feng, XU Chun-long, WANG Zeng-quan. Numerical Simulation of High Density-High Speed Combustion Process in Diesel Engine[J]. Acta Armamentarii, 2012, 33(12): 1436-1441.

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