• 제목/요약/키워드: Gwon Yeo-seon

검색결과 3건 처리시간 0.023초

역복사경계해석을 위한 다양한 조정법 비교 (Comparison of Regularization Techniques for an Inverse Radiation Boundary Analysis)

  • 김기완;신병선;길정기;여권구;백승욱
    • 대한기계학회논문집B
    • /
    • 제29권8호
    • /
    • pp.903-910
    • /
    • 2005
  • 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 finite-difference 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 that adopts the hybrid genetic algorithm as an initial value selector and uses the finite-difference Newton method as an optimization procedure.