Coupled FEM-BEM approach for axisymetrical heat transfer problems

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dc.contributor.author Mishuris, Gennady
dc.contributor.author Wrobel, M.
dc.date.accessioned 2009-10-26T11:57:34Z
dc.date.available 2009-10-26T11:57:34Z
dc.date.issued 2009-10-26
dc.identifier.citation Mishuris , G & Wrobel , M 2009 , ' Coupled FEM-BEM approach for axisymetrical heat transfer problems ' pp. 273-276 . en
dc.identifier.other PURE: 134457
dc.identifier.other dspace: 2160/3332
dc.identifier.uri http://hdl.handle.net/2160/3332
dc.description Mishuris, G; Wrobel, M. Coupled FEM-BEM approach for axisymetrical heat transfer problems. Defect and Diffusion Forum. Volume: 273-276, 740-745 en
dc.description.abstract This work deals with a stationary axisymmetrical heat transfer problem in a combined domain. This domain consists of half-space joined with a bounded cylinder. An important feature of the problem is the possible flux singularity along the edge points of the transmission surface. Domain decomposition is used to separate the subdomains. The solution for an auxiliary mixed boundary value problem in the half space is found analytically by means of Hankel integral transform. This allows us to reduce the main problem in the infinite domain to another problem defined in the bounded subdomain. In turn, the new problem contains a nonlocal boundary conditions along the transmission surface. These conditions incorporate all basic information about the infinite sub-domain (material properties, internal sources etc.). The problem is solved then by means of the Finite Element Method. In fact it might be considered as a coupled FEM-BEM approach. We use standard MATLAB PDE toolbox for the FEM analysis. As it is not possible for this package to introduce directly a non-classical boundary condition, we construct an appropriate iterative procedure and show the fast convergence of the main problem solution. The possible solution singularity is taken into account and the corresponding intensity coefficient of the heat flux is computed with a high accuracy. Numerical examples dealing with heat transfer between closed reservoir (filled with some substance) and the infinite foundation are discussed. en
dc.format.extent 4 en
dc.language.iso eng
dc.relation.ispartof en
dc.title Coupled FEM-BEM approach for axisymetrical heat transfer problems en
dc.type Text en
dc.type.publicationtype Conference paper en
dc.contributor.institution Institute of Mathematics & Physics (ADT) en
dc.description.status Non peer reviewed en


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