Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2004.11a
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- Pages.1288-1293
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- 2004
Comparison of Regularization Techniques For an Inverse Radiation Boundary Analysis
역복사경계해석을 위한 다양한 조정기법 비교
- Published : 2004.11.03
Abstract
Inverse radiation problems are solved for estimating the boundary conditions such as temperature distribution and wall emissivity in axisymmetric absorbing, emitting and scattering medium, given the measured incident radiative heat fluxes. Various regularization methods, such as hybrid genetic algorithm, conjugate-gradient method and Newton method, were adopted to solve the inverse problem, while discussing their features in terms of estimation accuracy and computational efficiency. Additionally, we propose a new combined approach of adopting the genetic algorithm as an initial value selector, whereas using the conjugate-gradient method and Newton method to reduce their dependence on the initial value.
Keywords
- inverse radiation;
- conjugate-gradient method;
- hybrid genetic algorithm;
- Newton-method;
- parameter estimation
- 역복사;
- 공액구배법;
- 혼합형 유전 알고리듬;
- 뉴튼법;
- 파라미터 추정;