Abstract:The purpose of this study is to develop a model based on the discrete-ordinates method for computing radiant exchange between surfaces separated by a transparent medium and to formulate the model so that arbitrary arrangements of the surfaces can be accommodated. Heat fluxes from the model are compared to those based on the radiosity/irradiation analysis. Three test geometries that include shadowing and irregular geometries are used to validate the model. Heat fluxes from the model are in good agreement with t… Show more
“…(7), f is spatial differencing weight which varies in the range of [0,1]. The standard diamond difference scheme (f = 1) is unstable and shows fluctuation and negative intensity solutions [26]. The step scheme (f = 0) puts the amount of central intensities to their outlet amount.…”
Section: Block Off Proceduresmentioning
confidence: 99%
“…The incident radiative heat flux along path length ξ, obtained with Cartesian-based structured grid using the block off procedure and unstructured grid data are compared with the results prepared by Sanchez and Smith [26] using the radiosity-irradiation method (RIM). The T 8 quadrature set is used for angular discretization in both block off and unstructured grid procedures.…”
Section: Square Enclosure With Internal Blockagementioning
“…(7), f is spatial differencing weight which varies in the range of [0,1]. The standard diamond difference scheme (f = 1) is unstable and shows fluctuation and negative intensity solutions [26]. The step scheme (f = 0) puts the amount of central intensities to their outlet amount.…”
Section: Block Off Proceduresmentioning
confidence: 99%
“…The incident radiative heat flux along path length ξ, obtained with Cartesian-based structured grid using the block off procedure and unstructured grid data are compared with the results prepared by Sanchez and Smith [26] using the radiosity-irradiation method (RIM). The T 8 quadrature set is used for angular discretization in both block off and unstructured grid procedures.…”
Section: Square Enclosure With Internal Blockagementioning
“…49,50 This model can take into account the participating medium. However, in our case, air is considered as transparent (with neither absorption nor diffusion).…”
Section: Discrete Ordinate (Do) Methods For Radiationmentioning
“…In the recent past, various methods that were applied to solve radiative transport problems with participating media have also been used to calculate radiative exchange between surfaces separated by non-participating media [2][3][4][5]. Sanchez and Smith [2] used the discrete ordinate method (DOM) to calculate view factors for 2-D rectangular enclosures.…”
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