本文对二维矩形灰体辐射腔复合墙体在有空气自然对流循环和无空气自然对流循环情况下的稳态传热进行了数值有限差分分析。本文的主要目的是提供一种清晰、系统的方法，用于准确地解释此类实际应用中辐射的影响，并为评估一阶二维方法的误差奠定基础。单位:SICitation:ASHRAE交易，第110卷，pt。2.

A numerical finite-difference analysis is developed in this paper for steady-state heat transfer in a composite wall with a two-dimensional rectangular graybody radiating cavity with and without natural convection circulation of air. The primary objective of this paper is to provide a clear and systematic approach that can be used to accurately account for the effects of radiation in practical applications of this type and to establish a basis for evaluating the error of the first-order two-dimensional method.Units: SI