A variational formulation and Ritz solution of the radiative equilibrium of a plane slab


Derbentli T.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, cilt.24, ss.349-356, 1997 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 24 Konu: 3
  • Basım Tarihi: 1997
  • Doi Numarası: 10.1016/s0735-1933(97)00020-1
  • Dergi Adı: INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
  • Sayfa Sayıları: ss.349-356

Özet

Radiative equilibrium problem for an absorbing emitting medium between plane parallel diffuse surfaces can be expressed by the Fredholm equation of the second kind. In this paper a variational formulation of the problem is obtained in terms of a functional. Dimensionless temperatures and heat fluxes for various optical thicknesses are then solved by the Ritz method. Results are expressed in terms of a third order polynomial with two coefficients and are very close to the exact solution of Heaslet and Warming. Copyright (C) 1997 Elsevier Science Ltd.