Study on Narrow Band Solution of the Radiative Transfer within a Cubical Enclosure by Nongray Gas Mixtures with Nonuniform Concentration Profiles

비균일 농도 분포를 갖는 비회색 혼합가스로 충만된 정육면체 내의 좁은 파장모델을 이용한 복사열전달 해석 연구

Radiative transfer by nongray gas mixtures with nonuniform concentration and temperature profiles were studied by using the statistical narrow-band model and ray-tracing method with the sufficiently accurate $T_{60}$ quadrature set. Transmittances through the nonhomogeneous gas mixtures were calculated by using the Curtis-Godson approximation. Three different cases with different temperature and concentration profiles were considered to obtain benchmark solutions for nongray gas mixtures with nonuniform concentration and temperature profiles. The solutions obtained from this study were verified and found to be very well matched with the previous solutions for uniform gas mixtures. The results presented in this paper can be used in developing various solution methods for radiative transfer by nongray gas mixtures.