Spatial discretization error in an artificial benchmark model of oblique laser incidence by finite volume approximation for radiative heat transfer  

作　　者：ZHANG HaoChun LI Yao 

机构地区：[1]School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China [2]Institute of Composite Materials,Harbin Institute of Technology,Harbin 150001,China

出　　处：《Chinese Science Bulletin》2012年第16期2046-2050,共5页

基　　金：supported by the National Natural Science Foundation of China (51121004, 51006026, 90916020);the Development Program for Outstanding Young Teachers in Harbin Institute of Technology(HITQNJS.2009.022)

摘　　要：The spatial discretization error in a finite volume method approximation for radiative heat transfer is investigated. An artificial benchmark model for oblique laser incidence on a two-dimensional rectangle containing a semi-transparent medium is proposed, in addition to using reference data from the Monte Carlo method. Within the framework of the current model, it is shown that numerical scattering in the finite volume method is affected by the spatial grid values and the different spatial discretization schemes to a large degree. Numerical scattering also varies with the degree of absorption coefficient deviation. Numerical scattering is distributed in a symmetrical profile along the laser incidence direction, and all of the schemes show symmetrical cross-scattering.The spatial discretization error in a finite volume method approximation for radiative heat transfer is investigated. An artificial benchmark model for oblique laser incidence on a two-dimensional rectangle containing a semi-transparent medium is proposed, in addition to using reference data from the Monte Carlo method. Within the framework of the current model, it is shown that numerical scattering in the finite volume method is affected by the spatial grid values and the different spatial discretization schemes to a large degree. Numerical scattering also varies with the degree of absorption coefficient deviation. Numerical scattering is distributed in a symmetrical profile along the laser incidence direction, and all of the schemes show symmetrical cross- scattering.

关 键 词：有限体积法 入射方向 模型空间 辐射传热 基准模型 离散误差 激光 人工 

分 类 号：TK124[动力工程及工程热物理—工程热物理]