Numerical simulation of diesel engine 
combustion exothermic regularity

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Journal of Dalian Maritime University ›› 2013, Vol. 39 ›› Issue (3) : 37-41.

Original Paper

Numerical simulation of diesel engine  combustion exothermic regularity

LI Hong-rui¹, ZHANG Jun-dong¹,  FENG Zhi-qiang¹, WU Pei-li²

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Abstract

An improved algorithm combining the simulated annealing algorithm with the Levenberg-Marquardt algorithm was proposed , and then optimized the zero-dimensional combustion model. Taking the deviation of the predicted values and measured values and the curve of the goodness of fit as measure standards，the comparison is carrried out between the improved algorithm and the traditional algorithm. Results show that the improved algorithm has such advantages as increasing the accuracy of zerodimensional combustion modeling, shortening the computation time and mitigating the requirement on the initial values, as well as avoiding the ill-conditioned matrix and complex results.

Key words

diesel engine / rate of heat release / numerical simulation / simulated annealing algorithm / Levenberg-Marquardt algorithm / Wiebe’s functions / zero-dimensional model

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LI Hong-rui, ZHANG Jun-dong,  FENG Zhi-qiang, WU Pei-li. Numerical simulation of diesel engine  combustion exothermic regularity[J]. Journal of Dalian Maritime University. 2013, 39(3): 37-41

References

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