The calculation of the emissivity of cylindrical cavities giving near black-body radiation
The calculation of the emissivity of cylindrical cavities giving near black-body radiation
复制标题
近黑体辐射圆柱腔发射率的计算
DOI：
--
复制
发表时间：
1967
期刊：
影响因子：
--
通讯作者：
T. Quinn
中科院分区：
文献类型：
--
作者：
T. Quinn
本文对一端封闭，另一端开孔半径等于或小于圆柱半径的圆柱体的辐射率作了新的计算。结果提出的圆柱体具有漫反射壁的尺寸，使发射率是非常接近统一的。计算方法是德沃斯设计的，但更少的近似值，并获得显着更高的发射率值。通过与其他计算结果的比较，可以看出Buckley和Gouffe的计算结果对这类空腔都有严重的误差，而Sparrow等人的计算结果虽然采用了不同的方法，但与本文的结果非常吻合。估计的影响，对发射率的内部挡板和凹槽表面。
A new calculation has been made of the emissivities of cylinders closed at one end and having in the other end an opening of radius either equal to or smaller than the radius of the cylinder. The results are presented for cylinders having diffusely reflecting walls with dimensions such that the emissivity is very close to unity. The method of calculation is that devised by de Vos, but fewer approximations are made, and significantly higher values of emissivity obtained. Comparison with the results of other calculations leads to the conclusion that those of both Buckley and Gouffe are seriously in error for this type of cavity while those of Sparrow et al. are in very close agreement with the present results though obtained by quite different methods. Estimates are made of the effects on the emissivity of internal baffles and grooved surfaces.