Radiative Heat Transfer in Arbitrary Configurations With Nongray Absorbing, Emitting, and Anisotropic Scattering Media

1999 ◽  
Vol 121 (3) ◽  
pp. 722-726 ◽  
Author(s):  
S. Maruyama ◽  
Z. Guo
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Anisotropic Scattering ◽  
Scattering Media

Radiative Heat Transfer in Multidimensional Emitting, Absorbing, and Anisotropic Scattering Media—Mathematical Formulation and Numerical Method

1989 ◽  
Vol 111 (1) ◽  
pp. 141-147 ◽  
Author(s):  
Zhiqiang Tan
Keyword(s):  
Heat Transfer ◽  
Integral Equations ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Numerical Technique ◽  
Mathematical Formulation ◽  
Internal Heat ◽  
Anisotropic Scattering ◽  
Scattering Media ◽  
Zonal Method

Thermal radiative transmission in multidimensional emitting, absorbing, and anisotropic scattering media is studied in this paper. In the first part, starting from basic formulae of radiative heat transfer, a set of integral equations for the problem is derived. Then the product-integration method is applied to discretize the integral equations. This method, while analogous to Hottel’s zonal method or Razzaque’s finite element method, requires evaluation of only three or two-dimensional integrals for three-dimensional systems. Finally the formulation and the numerical technique are applied to the problems of thermal radiation in emitting, absorbing, and linearly anisotropic scattering planar and square media with gray surfaces and with or without internal heat generations. Computed results are discussed and compared with available data.

scholarly journals Discrete unified gas kinetic scheme for multiscale anisotropic radiative heat transfer

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Xinliang Song ◽  
Chuang Zhang ◽  
Xiafeng Zhou ◽  
Zhaoli Guo
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Kinetic Scheme ◽  
Mean Free Path ◽  
Anisotropic Scattering ◽  
Scattering Media ◽  
Unified Gas Kinetic Scheme ◽  
Free Transport ◽  
Scattering Phase Function

AbstractIn this work, a discrete unified gas kinetic scheme (DUGKS) is developed for radiative transfer in anisotropic scattering media. The method is an extension of a previous one for isotropic radiation problems [1]. The present scheme is a finite-volume discretization of the anisotropic gray radiation equation, where the anisotropic scattering phase function is approximated by the Legendre polynomial expansion. With the coupling of free transport and scattering processes in the reconstruction of the flux at cell interfaces, the present DUGKS has the nice unified preserving properties such that the cell size is not limited by the photon mean free path even in the optical thick regime. Several one- and two-dimensional numerical tests are conducted to validate the performance of the present DUGKS, and the numerical results demonstrate that the scheme is a reliable method for anisotropic radiative heat transfer problems.

Surface Exchange Model of Radiative Heat Transfer From Anisotropic Scattering Layers

1989 ◽  
Vol 111 (4) ◽  
pp. 1015-1020
Author(s):  
Y. Ma ◽  
H. S. Lee
Keyword(s):  
Heat Transfer ◽  
Radiative Heat Transfer ◽  
Scaling Laws ◽  
Radiative Heat ◽  
Transfer Problem ◽  
Anisotropic Scattering ◽  
Heat Fluxes ◽  
Scattering Media ◽  
Surface Temperatures ◽  
Boundary Source

Scaling laws are developed that reduce the radiative heat transfer problem in an isothermal, absorbing-emitting, planar layer to a radiative exchange problem between gray surfaces through a nonparticipating medium. The wall reflectivity and the surface temperatures become the parameters to be scaled. The scaled parameters are obtained by matching the heat fluxes leaving the original layer. The resulting scaled nonparticipating reflectivity is found to be a function of the original medium reflectivity and the optical depth. The scaled nonparticipating surface temperatures include the influence of the medium temperature and the boundary source. Excellent agreement is shown for the layer reflectance, transmittance, and emittance of some anisotropic scattering media, which are scaled to a nonparticipating layer using this and the previously developed scaling laws.

Sign in / Sign up

Export Citation Format

Share Document