计算物理 ›› 2015, Vol. 32 ›› Issue (5): 623-630.

• 论文 • 上一篇    

材料热物性与热源强度辨识的改进遗传算法

颜帆, 卢玫   

  1. 上海理工大学能源与动力工程学院, 上海 200093
  • 收稿日期:2014-09-25 修回日期:2014-12-18 出版日期:2015-09-25 发布日期:2015-09-25
  • 通讯作者: 卢玫(1957-),女,教授,从事导热逆问题研究,E-mail:rose_luu@usst.com
  • 作者简介:颜帆(1989-),男,硕士,从事导热逆问题优化方法研究,E-mail:yanfanaust@163.com
  • 基金资助:
    国家自然科学基金(51176126)资助项目

Modified Genetic Algorithm for Identifying Material Thermal Properties and Strength of Heat Source

YAN Fan, LU Mei   

  1. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • Received:2014-09-25 Revised:2014-12-18 Online:2015-09-25 Published:2015-09-25

摘要: 建立二维非线性导热逆问题(IHCP)的数学模型.通过对基本遗传算法逐步改进得到三种不同改进阶段的遗传算法,分别用于反演导热问题中材料的导热系数及其内部热源强度,并比较遗传算法在各改进阶段用于求解导热逆问题时的收敛速度与求解精度,寻求一种使导热逆问题求解效率与计算精度更高的遗传算法改进策略.结果表明:提出的遗传算法改进策略达到了预期目的.

关键词: 遗传算法, 导热逆问题, 导热系数, 热源强度

Abstract: A mathematical model for two-dimensional nonlinear inverse heat conduction problem (IHCP) is established. Three kinds of genetic algorithm at different modified phase are proposed for identifying material thermal conductivity and strength of heat source. Convergence speed and calculation precision of genetic algorithms at different modified phase are compared. Calculation results show that the genetic algorithm modified strategy proposed achieve higher convergence speed and calculation precision.

Key words: genetic algorithm, IHCP, thermal conductivity, strength of heat source

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