摘要
提出一种将模拟退火算法和阻尼最小二乘算法相结合的改进算法,并将其用于零维燃烧模型的建立.以预测值和实测值的偏差及曲线的拟合优度为衡量标准,对改进算法和传统算法进行比较.结果证明,改进算法具有提高零维燃烧模型精度、减少计算时间及对初值的要求、避免病态矩阵和复数结果出现的优点.
An improved algorithm combining the simulated annea- ling algorithm with the Levenberg-Marquardt algorithm was pro- posed , and then optimized the zero-dimensional combustion model. Taking the deviation of the predicted values and meas- ured values and the curve of the goodness of fit as measure stand- ards, the comparison is carrried out between the improved algo- rithm and the traditional algorithm. Results show that the im- proved algorithm has such advantages as increasing the accuracy of zero-dimensional combustion modeling, shortening the compu- tation time and mitigating the requirement on the initial values, as well as avoiding the ill-conditioned matrix and complex re- suits.
出处
《大连海事大学学报》
CAS
CSCD
北大核心
2013年第3期37-41,共5页
Journal of Dalian Maritime University
基金
国家自然科学基金资助项目(51179102)
关键词
柴油机
燃烧放热率
数值模拟
模拟退火算法
阻尼最小二乘算法
韦伯函数
零维模型
diesel engine
rate of heat release
numerical simu- lation
simulated annealing algorithm
Levenberg- Marquardt algorithm
Wiebe' s functions
zero-di- mensional model