Specular reflective boundary conditions for Discrete Ordinate Methods in Periodic or Symmetric Geometries

Eurotherm Conference 105: Computational Thermal Radiation in Participating Media V

物理学;计算机科学

Cai, Jian^1 ; Modest, Michael F.^2

University of Wyoming, Laramie

WY

82071, United States^1

Shaffer and George Department of Engineering, University of California, Merced

CA

95343, United States^2

关键词: Axisymmetry;    Computational domains;    Discrete ordinate methods;    Photon Monte Carlo method;    Plane symmetry;    Radiative intensity;    Symmetric geometry;    Symmetry conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/676/1/012002/pdf
DOI  :  10.1088/1742-6596/676/1/012002

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In simulations of periodic or symmetric geometries, computational domains are reduced by imaginary boundaries that present the symmetry conditions. In Photon Monte Carlo methods, this is achieved by imposing specular reflective boundary conditions for the radiative intensity. In this work, a similar specular reflective boundary condition is developed for Discrete Ordinate Methods. The effectiveness of the new boundary condition is demonstrated by multiple numerical examples including plane symmetry and axisymmetry.