2차원 밀폐공간 내 복사열전달 BEM 해석을 위한 음영효과 처리 알고리즘의 실행
Algorithm Implementation of Shadow Effects for the Radiation Heat Transfer BEM Analysis in Two-Dimensional Enclosures
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초록
Computational algorithms and their implementations are studied for the treatments of kernelfunction’s shadow effects, which occurs in the application of the BEM(boundary element method) forradiation heat transfer analysis. In this problem, surfaces are assumed to be diffuse and gray placed intwo-dimensional enclosures with transparent medium. Self-blocking or third party blocking is possiblewhen the radiosity from the BEM nodes cannot reach the destination points. Also the third partyblocking can be the partial or total blocking case. Algorithms, which can accurately recognize the eachblocking cases and reflect the shadow effects to the BEM kernel function, are studied in this paper. Effective implementation methods are presented, and their results are verified by the test problem.
Abstract
Computational algorithms and their implementations are studied for the treatments of kernelfunction’s shadow effects, which occurs in the application of the BEM(boundary element method) forradiation heat transfer analysis. In this problem, surfaces are assumed to be diffuse and gray placed intwo-dimensional enclosures with transparent medium. Self-blocking or third party blocking is possiblewhen the radiosity from the BEM nodes cannot reach the destination points. Also the third partyblocking can be the partial or total blocking case. Algorithms, which can accurately recognize the eachblocking cases and reflect the shadow effects to the BEM kernel function, are studied in this paper. Effective implementation methods are presented, and their results are verified by the test problem.
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