摘要
提出基于两级敏度分析的稳态非线性热传导反问题的求解策略,建立了便于非线性正演和反演的有限元模型,由此可直接求导进行敏度分析,同时还考虑了非均质和分布参数的影响。对非线性热物性参数和边界条件的反演,进行了数值验证,取得了令人满意的结果,并对信息误差作了初步探讨。
This paper presents a solving strategy for non-linear inverse heat conduction problems in the steady state via 2-Clevel sensitivity analysis. A FE based model, facilitating to sensitivity analysis for non-linear direct and inverse problems, and considering inhomogeneity and parameters distribution, is developed for the solution of direct heat conduction problems. Identifications are carried out for non-linear thermal parameters and boundary conditions with satisfactory numerical validations, and a preliminary investigation of effect of noise data on the results is given.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2003年第3期463-465,共3页
Journal of Engineering Thermophysics
基金
教育部重点基金资助项目(No.99149)
国家973资助项目(N.G1999032805)
关键词
热传导
反问题
非线性
敏度分祈
heat conduction
inverse problems
non-linear
sensitivity analysis
