A model for the volumetric radiation characteristics of cellular ceramics

被引：27

作者：

Fu, X

Viskanta, R

Gore, JP

机构：

[1] School of Mechanical Engineering, Purdue University, West Lafayette

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 1997年 / 24卷 / 08期

关键词：

D O I：

10.1016/S0735-1933(97)00101-2

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A unit cell based model for cellular ceramics was developed in conjunction with the discrete ordinates method for radiative transfer to predict theoretically the effective volumetric radiation characteristics of the cellular ceramics. Model input parameters include the porosity, pores per centimeter (PPC) and reflectivity of the solid material. Numerical calculations of the extinction coefficients and single scattering albedo are reported over the range of reflectivities from 0 to 1, porosities from 0.6 to 0.95 and PPC from 4 to 26. A comparison between model predictions and spectral emittance data for cellular ceramics reported in the literature shows agreement within 5 to 10% which is within experimental uncertainty. (C) 1997 Elsevier Science Ltd.

引用

页码：1069 / 1082

页数：14

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