论文部分内容阅读
一、引言 到目前为止,半透明介质内辐射与导热的复合换热研究,绝大多数为稳态问题。在非稳态研究中多数考虑第一类边界条件,只有为数不多的文献研究了其他类型的边界条件,至于半透明边界面的研究则更少。然而在玻璃工业,核能,机械,测量,宇航及太阳能利用中却经常遇到各种边界条件及边界面下的复合换热问题。本文考虑了两种边界面,不透明和半透明边界面(但公式推导仅限于不透明边界面,半透明边界面的推导见文[5])及第一类和第三类非线性边界条件。
I. INTRODUCTION Up to now, the research on the composite heat transfer between radiation and heat transfer in translucent medium is the most stable one. Most of the non-steady-state studies consider the first type of boundary conditions, only a few of them study other types of boundary conditions, and there are fewer researches on translucent boundary surfaces. However, in the glass industry, nuclear energy, machinery, surveying, aerospace and solar energy use often encounter various boundary conditions and the boundary heat exchanger problem. In this paper, we consider two kinds of boundary surfaces, opaque and translucent boundary surfaces (but formula derivation is limited to opaque boundary surfaces, see [5] for derivation of translucent boundary surfaces), and the first and third types of nonlinear boundary conditions.