Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (3): 143-149.

• Architecture & Civil Engineering • Previous Articles     Next Articles

Numerical Analysis of Singular Heat Flux Field (Ⅱ)Computation of Heat Flux Intensity Factors

Wang Hai-Tao1  Yang Xiao-mei2   

  1. 1. Dept. of Civil Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong China;2. Faculty of Constmction Engineering , Guangdong Univ. of Tech. , Guangzhou 510006 , Guangdong , China
  • Received:2006-01-18 Online:2007-03-25 Published:2007-03-25
  • Contact: 王海涛(1971-)，男，博士，副教授，主要从事计算力学、断裂力学及结构工程研究. E-mail:htwang@scut.edu.cn
  • About author:王海涛(1971-)，男，博士，副教授，主要从事计算力学、断裂力学及结构工程研究.
  • Supported by:

    华南理工大学自然科学基金资助项目

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Abstract:

In this paper , singular heat flux elements are developed from a hybrid finite-element variational function for static heat conduction problems. With the developed element , the heat flux intensity factor can be effectively and correctly predicted. The assumed heat flux field in the formulation of singular heat flux elements are based on the eigenpairs computed via the one-dimension finite-element procedure presented before. A series of numerical ex-amples indicates that the proposed singular heat flux elements help to find solutions with a high accuracy through coarse meshes , and that the proposed method is effective and reliable.

Key words: finite element, heat conduction, intensity factor, variational principle, hybrid element