Discrete Transfer Radiation Model. The discrete ordinate method for the transfer of monochromatic unpolarized radiation in non isothermal vertically inhomogeneous media as implemented in the computer code discrete ordinate method radiative transfer disort is reviewed. The fineness of the angular discretization is controlled by you analogous to choosing the number of rays for the dtrm.
The transfer of energy by thermal radiation represents an important component in many reacting flows. The number of the solid angles selected directly determines the accuracy and the computational cost. Radiation heat transfer 34 discrete ordinates model 3 for example in fluent each octant of the angular space at any spatial location is discretized into solid angles called control angles.
The methods were developed by subrahmanyan chandrasekhar when he was working on radiative transfer.
The system solved is. The method of discrete ordinates or the s n method is one way to approximately solve the rte by discretizing both the xyz domain and the angular variables that specify the direction of radiation. Discrete transfer radiation model dtrm is adopted for the radiation heat transfer and the solar insolation is input using solar load model inbuilt in the fluent code10the solar calculator is used to track the solar irradiation for the analysis by taking 21st february as. The discrete approach considers the radiative heat transfer amongst individual particles based on the solution of view factors.