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

영역 및 복사 경계의 완전 분할을 통한 유한요소 열전달 해석의 효율화

  • Published : 2008.10.01

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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