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Ray effects and false scattering

DOI: 10.1615/thermopedia.009176


RAY EFFECTS AND FALSE SCATTERING

Following from: Discrete ordinates and finite volume methods

The discrete ordinates method (DOM) and the finite volume method (FVM) have been widely applied in the last two decades to the solution of radiative heat transfer problems, owing to their good compromise between accuracy, flexibility, and moderate computational requirements. They can be applied to nonisothermal, nonhomogeneous, anisotropically scattering, and nongray media in complex geometries. However, several limitations of these methods have also been identified. Among them, ray effects and false scattering are perhaps the two most important ones. These two problems have been discussed, e.g., in Chai et al. (1993), Raithby (1999), and Coelho (2002a), and several proposals have been made to overcome them.

False Scattering

False scattering, also referred to in the literatu ...

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