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.
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 zerodimensional 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.
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
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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基金
国家自然科学基金资助项目 (51179102).
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