Precise integral algorithm based solution for transient inverse heat conduction problems with multi-variables

被引：0
|
作者：
Wang, YB [1 ]
Yang, HT
Wu, RF
机构：
[1] Tsing Hua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
[2] Dalian Univ Technol, Dept Mech Engn, Dalian 116024, Peoples R China
[3] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
来源：
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION | 2005年 / 26卷 / 05期
关键词：
heat conduction; inverse problem; multi-variables; precise integral algorithm; finite element;
D O I：
暂无
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
By modeling direct transient heat conduction problems via finite element method (FEM) and precise integral algorithm, a new approach is presented to solve transient inverse heat conduction problems with multi-variables. Firstly, the spatial space and temporal domain are discretized by FEM and precise integral algorithm respectively. Then, the high accuracy semi-analytical solution of direct problem can be got. Finally, based on the solution, the computing model of inverse problem and expression of sensitivity analysis are established. Single variable and variables combined identifications including thermal parameters, boundary conditions and source-related teens etc. are given to validate the approach proposed in 1-D and 2-D cases. The effects of noise data and initial guess on the results are investigated. The numerical examples show the effectiveness of this approach.
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页码：555 / 562
页数：8
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