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Inverse Bem Method To Identify Surface Temperatures And Heat Transfer Coefficient Distributions At Inaccessible Surfaces
Authors
Minking K. Chyu
Eduardo A. Divo
Alain J. Kassab
Publication date
23 November 2005
Publisher
'Information Bulletin on Variable Stars (IBVS)'
Abstract
The purpose of the inverse problem considered in this study is to resolve heat transfer coefficient distributions by solving a steady-state inverse problem. Temperature measurements at interior locations supply the additional information that renders the inverse problem solvable. A regularized quadratic functional is defined to measure the deviation of computed temperatures from the values under current estimates of the heat transfer coefficient distribution at the surface exposed to convective heat transfer. The inverse problem is solved by minimizing this functional using a parallelized genetic algorithm (PGA) as the minimization algorithm and a two-dimensional multi-region boundary element method (BEM) heat conduction code as the field variable solver. Results are presented for a regular rectangular geometry and an irregular geometry representative of a blade trailing edge and demonstrate the success of the approach in retrieving accurate heat transfer coefficient distributions. Copyright © 2005 by ASME
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Last time updated on 19/07/2022