Multi-dimensional Numerical Simulation of Operating Process of CNG Engine Using Detailed Chemical Kinetics with CFD

Abstract

Abstract: Numerical simulation of engine combustion using CFD and detailed chemical kinetics is accomplished by integrating CFD code KIVA3V with chemical kinetics code CHEMKINII. To reduce the computation time, the coupled software is reprogrammed to have the function of parallel computing and the revised software is calculated in a massively parallel processor. In order to have a better prediction of in-cylinder combustion and intermediate involving process, the coupled simulation takes the effects of turbulence, thermodynamic and chemistry into account and a turbulent combustion model which balances the effect of turbulence and detailed chemical kinetics is applied. The model is validated by using the experiment data from modified diesel engine-WT615. The results show that the simulation result has a good consistency with experiment data, the simulation provides the information of in-cylinder distribution of intermediates and computation has good parallel efficiency and acceleration ratio.

Key words: Combustion, Detailed chemical kinetics, Parallel computing

CLC Number:

TG156

ZHANG Xin;WANG Yujun;LI Congxin;WU Jianfeng. Multi-dimensional Numerical Simulation of Operating Process of CNG Engine Using Detailed Chemical Kinetics with CFD[J]. , 2009, 45(11): 225-229.

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Multi-dimensional Numerical Simulation of Operating Process of CNG Engine Using Detailed Chemical Kinetics with CFD

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