Electric Transverse Emissivity of Sinusoidal Surfaces Determined by a Differential Method: Comparison with Approximation of Geometric Optics

Table 1

Comparison between the emissivity calculated by the homogenization process and those calculated by the differential and geometric optics methods for equal to 0.05, in the case of TE polarization. Case of the sinusoidal-shaped surface.

		Au			W
h		Differential method (MD)	Homogenization method	Geometric optics method	Differential method (MD)	Homogenization method	Geometric optics method
h = 0.1	1°	0,2509	0,2520	0,4712	0,6396	0.6449	0,7624
	10°	0,2470	0,2481	0,5773	0,6338	0,6391	0,8446
	50°	0,1618	0,1625	0,5046	0,4771	0,4720	0,7849
	60°	0,1267	0,1273	0,3846	0,3953	0,3995	0,6747
h = 1	1°	0,4586	0,4620	0,7650	0,8228	0.8201	0,9319
	10°	0,4480	0,4534	0,9607	0,8161	0,8151	0,9430
	50°	0,2783	0,2810	0,8577	0,6599	0,6604	0,8791
	60°	0,2156	0,2177	0,8547	0,5670	0,5754	0,9351