نوع مقاله : مقاله پژوهشی
موضوعات
عنوان مقاله English
نویسندگان English
In this study, the transient radiative transfer equation is numerically solved within a semi-transparent medium with a variable refractive index, located between two concentric cylinders or spheres. Utilizing the Discrete Transfer Method (DTM) and considering the geometric symmetry, the computational domain is reduced to a cylindrical or spherical sector. The domain is discretized into annular or spherical elements, and the angular space is divided into numerous discrete solid angles, allowing for the accurate tracking of radiative rays within the medium. To reduce computational time, a fast ray tracing algorithm is employed. The problem is analyzed for absorbing, emitting media with isotropic scattering and various refractive index distributions, including linear and discontinuous profiles. The obtained results demonstrate that the Discrete Transfer Method is a reliable and accurate approach for analyzing transient radiative heat transfer phenomena in such media, and it can effectively predict the behavior of radiative heat flux through such media.
کلیدواژهها English
