中国电机工程学报2012，Vol.32Issue(14)：82-87,6.
基于瞬态热传导反问题反演材料随温度变化的导热系数
Inversion of Temperature-dependent Thermal Conductivity Based on Transient Inverse Heat Conduction Problems
摘要
Abstract
A new method was represented for estimating temperature-dependent thermal conductivity by solving transient inverse heat conduction problems.In the direct problem,the measurement temperatures were obtained by a finite element method.In the inverse problem,the inverted parameters were treated as the optimization variables,and the errors to be minimized were the differences between the calculated temperatures and the measured ones.The solutions were obtained by minimizing the objective function.The complex-variable-differentiation method was introduced into transient inverse heat conduction problems,for the precise calculation of sensitivity coefficient.Examples were given to demonstrate the effectiveness and accuracy of the inverse approach.The results show that muti-parameters can be simultaneously retrieved by the proposed approach.The prior information on the functional form of the thermal properties is not necessary for the proposed approach.Accurate results can be obtained with accurate measurement data,and satisfactory results can be obtained with certain measurement errors,which further indicates the robustness of the proposed approach.关键词
反问题/瞬态热传导/随温度变化的导热系数/复变量求导法Key words
inverse problem/transient heat conduction/temperature-dependent thermal conductivity/complex-variable-differentiation method分类
能源科技引用本文复制引用
崔苗,高效伟,刘云飞..基于瞬态热传导反问题反演材料随温度变化的导热系数[J].中国电机工程学报,2012,32(14):82-87,6.基金项目
国家自然科学基金项目 （）
中央高校基本科研业务费项目 （）
