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Calculation of the effective emissivity of a cavity having non-Lambertian isothermal surfaces

机译:具有非朗伯等温面的腔的有效发射率的计算

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摘要

A method to calculate the directional local effective emissivity for a cavity having non-Lambertian isothermal surfaces is presented. Numerical calculation is carried out for a cylindrocone. The directional local effective emissivity directed to the cavity bottom is smaller than that directed to the cavity opening, and the local ef fective emissivity for a Lambertian takes a value close to the middle. The integrated effective emissivities are computed for a nonimaging system and an imaging optical system.
机译:提出了一种计算具有非朗伯等温表面的腔体的定向局部有效发射率的方法。对圆柱形吲哚酮进行了数值计算。指向腔体底部的定向局部有效发射率小于指向腔体开口的定向局部有效发射率,Lambertian的局部有效发射率取接近中间值。针对非成像系统和成像光学系统计算积分有效发射率。

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