Calculation of Effective Emissivity of Isothermal Diffuse Cylindrical-inner-cone Cavity using Polynomial Interpolation Technique

Abstract

Abstract. We have used the polynomial interpolation technique to calculate effective emissivity of the conical base of isothermal diffuse cylindrical-inner-cone cavities for various cavity parameters such as axial length, aperture radius in the lid and half-angle of the inner cone. Our results are compared with what obtained by other authors using the truncated series approximation technique. The comparative analysis demonstrates considerable accuracy and simplicity of the polynomial interpolation technique. For applications, a series of explicit analytical expressions in the polynomial forms are also presented.