Highlights Mitigation of ray effect in the framework of the pure FVM is proposed. The transparent medium as well as the irregular geometry is considered. FVM has less constraint on the angular discretisation compared to DOM. FVM produces more reasonable results than the DOM does.

    Abstract Interaction between fluid flow and thermal radiation has received considerable attention due to its numerous applications in engineering field including space applications. To analyse the radiation heat transfer in a radiating fluid, the simultaneous solution of the radiation transfer equation (RTE) and the fluid dynamics equations is required. This means that the numerical procedure used for the RTE must be computationally efficient to permit its inclusion in the other submodels, and must be compatible with the other transport equations. In this context the finite volume method (FVM) and the discrete ordinates method (DOM) are usually being incorporated to simulate radiation problems with curvilinear coordinates. In this paper these two representative methods are examined and compared, especially in terms of the directional dependence of radiation intensity due to the discrete division of a solid angle. The FVM shows more reasonable results than the DOM does, as it has less constraint on the angular discretisation.


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    Title :

    Prediction of radiative heat transfer using multi-flux method in space application


    Contributors:

    Published in:

    Advances in Space Research ; 56 , 7 ; 1297-1306


    Publication date :

    2015-06-24


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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