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http://dx.doi.org/10.3795/KSME-A.2008.32.10.836

Efficient Finite Element Heat Transfer Analysis by Decomposing a Domain and Radiation Boundaries  

Shin, Eui-Sup (전북대학교 기계항공시스템공학부)
Kim, Yong-Uhn (STX 엔파코(주))
Kim, Sung-Jun (전북대학교 대학원)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.32, no.10, 2008 , pp. 836-843 More about this Journal
Abstract
An efficient domain/boundary decomposition method is applied for heat transfer problems with non-linear thermal radiation boundaries. The whole domain of solids or structures is considered as set of subdomains, an interface, and radiation interfaces. In a variational formulation, simple penalty functions are introduced to connect an interface or radiation interfaces with neighboring subdomains that satisfy continuity conditions. As a result, non-linear finite element computations due to the thermal radiation boundaries can be localized within a few subdomains or radiation interfaces. Therefore, by setting up suitable solution algorithms for the governing finite element equations, the computational efficiency can be improved considerably. Through a set of numerical examples, these distinguishing characteristics of the present method are investigated in detail.
Keywords
Domain/Boundary Decomposition; Thermal Radiation; Finite Element; Heat Transf;
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