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The heat radiation problem: three-dimensional analysis for arbitrary enclosure geometries

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  • Naji Qatanani
  • Monika Schulz

Abstract

This paper gives very significant and up-to-date analytical and numerical results to the three-dimensional heat radiation problem governed by a boundary integral equation. There are two types of enclosure geometries to be considered: convex and nonconvex geometries. The properties of the integral operator of the radiosity equation have been thoroughly investigated and presented. The application of the Banach fixed point theorem proves the existence and the uniqueness of the solution of the radiosity equation. For a nonconvex enclosure geometries, the visibility function must be taken into account. For the numerical treatment of the radiosity equation, we use the boundary element method based on the Galerkin discretization scheme. As a numerical example, we implement the conjugate gradient algorithm with preconditioning to compute the outgoing flux for a three-dimensional nonconvex geometry. This has turned out to be the most efficient method to solve this type of problems.

Suggested Citation

  • Naji Qatanani & Monika Schulz, 2004. "The heat radiation problem: three-dimensional analysis for arbitrary enclosure geometries," Journal of Applied Mathematics, Hindawi, vol. 2004, pages 1-20, January.
    • Handle: RePEc:hin:jnljam:836758
    DOI: 10.1155/S1110757X04306108
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