【摘要】 在本文中提出了一种求介圆筒内凸锥空腔有效发射率分布的新方法。而该种空腔有效发射率分布的计算尚未见有关文献提及。文中给出了有关计算结果,井可见在一定几何尺寸下,该种空腔有效发射率沿内锥面及锥根附近处的数值将非常接近于1.0。为了估计本法的精度,也附带列出了与Bedford/Ma 方法的精密介在θ=90°时的比较数值表。计算结果表明本法具有足够高的精度,特别在高ε值、L 值及低R₀值时更是如此。更多还原

【Abstract】 A new calculation of the local hemispherical effective emissivities along anisothermal diffuse cylindro-inncr cone cavity has been made.The results are presented for cylindro-inner cones with dimensions suchthat the effective emissivities along the inner cones and the surface nearby arevery close to unity.Comparison is made between Bedford/Ma techniques and thepresent method for a cone half-angle of 90°.The results show that high accuracycan be obtained with our method,especially for cavities with high surfaceemittance,long cylinder length and small aperture radius.更多还原