THE BOUNDARY-CONDITION OF THE PN-APPROXIMATION USED TO SOLVE THE RADIATIVE-TRANSFER EQUATION

被引：17
|
作者：
LIU, FS [1 ]
SWITHENBANK, J [1 ]
GARBETT, ES [1 ]
机构：
[1] UNIV SHEFFIELD,DEPT MECH & PROC ENGN,SHEFFIELD S1 3JD,S YORKSHIRE,ENGLAND
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1992年 / 35卷 / 08期
关键词：
D O I：
10.1016/0017-9310(92)90205-7
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The arbitrariness of the boundary condition applied to the P1-approximation is explored by extending the conventional Marshak boundary condition to include an arbitrary constant. The influence of the constant on the results of the P1-approximation is investigated numerically for one- and multi-dimensional radiative heat transfer problems. Based on these numerical investigations, optimized values for the constant are recommended according to the wall emissivity of the radiating system. The accuracy of the P1-approximation can be improved significantly when optimized values are employed in the boundary condition.
引用
收藏
页码：2043 / 2052
页数：10
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