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COMPARISON OF THREE REGULARIZED SOLUTION TECHNIQUES IN A THREE-DIMENSIONAL INVERSE RADIATION PROBLEM

DOI: 10.1615/ICHMT.2001.RadiationSymp.450
9 pages

Hakan Erturk
Department of Mechanical Engineering Boğaziçi University, Istanbul; and Department of Mechanical Engineering, Middle East Technical University, Ankara 06531, Turkey; Intel Corporation, Chandler, AZ 85226

Ofodike A. Ezekoye
Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas, 78712, USA

John R. Howell
Department of Mechanical Engineering, The University of Texas at Austin, Austin TX 78712, U.S.A.

Abstrakt

Inverse methods provide a good alternative to traditional trial-and-error methods for design of thermal systems. The inverse boundary condition estimation problem in radiating enclosures involves the solution of an ill-posed system that requires regularization to obtain a reasonable physical solution. This study compares three different regularized solution techniques that can be used in the inverse boundary condition estimation problems in a three-dimensional radiating enclosure. The regularized solution techniques covered in this study are the conjugate gradient method, bi-conjugate gradient method and truncated singular value decomposition.

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