Heat Transfer by Combined Conduction and Radiation Between Concentric Spheres Separated by Radiating Medium
Heat Transfer by Combined Conduction and Radiation Between Concentric Spheres Separated by Radiating Medium
复制标题
由辐射介质分隔的同心球体之间通过传导和辐射联合进行的传热
DOI：
10.1115/1.3597493
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发表时间：
1968
影响因子：
--
通讯作者：
R. Merriam
中科院分区：
文献类型：
--
作者：
R. Viskanta;R. Merriam
本文用解析方法研究了吸收、发射和散射介质在球壳内同时传导和辐射的稳态传热。介质被限制在两个灰色的扩散的等温球体之间，保持不同但均匀的温度，并且能够产生热量。这个问题是用精确的辐射传递方法严密地表述出来的。采用迭代格式对控制方程进行了数值求解。研究结果说明了热传导与辐射传热的相互作用，揭示了传热参数对传热特性的影响。本文提出了一种简单的近似方法，可以根据平面层的传热结果来预测通过球壳的总传热。结果与现有解和叠加位置近似进行了比较。
Steady-state heat transfer by simultaneous conduction and radiation through a spherical shell of absorbing, emitting, and scattering medium has been investigated analytically. The medium is confined between two gray, diffuse, isothermal spheres kept at different but uniform temperatures and is capable of generating heat. The problem is formulated rigorously using exact radiative transfer methods. The governing equations were solved numerically using an iterative scheme. The results reported illustrate the interaction of conduction with radiation heat transfer as well as reveal the effects of the parameters on the heat transfer characteristics. A simple approximation is suggested for predicting total heat transfer through a spherical shell from the results through a plane layer. The results are compared with available solutions and super position approximations.