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Continuum thermodynamic modeling of drying capillary particulate materials via an edge-based algorithm. (English) Zbl 1091.76068
Summary: The numerical modeling of the coupled heat and mass transfer processes prevalent in drying non-hygroscopic and hygroscopic capillary particulate materials is dealt with. A set of volume averaged governing equations is employed for this purpose. An improved unstructured hybrid vertex-centered edge-based finite volume algorithm is used for spatial discretization. Enhancements include reformulation of boundary integral flux-averaging in conjunction with the use of a compact stencil in the computation of diffusive terms. A significant increase in accuracy is demonstrated. For validation purposes the drying of a non-hygroscopic brick and hygroscopic extruded corn meal are modeled. Predicted results for the former case are shown to compare reasonable well with experimental data while for the latter case a very good agreement is obtained.

76T30 Three or more component flows
76M12 Finite volume methods applied to problems in fluid mechanics
80A20 Heat and mass transfer, heat flow (MSC2010)
80A22 Stefan problems, phase changes, etc.
Full Text: DOI
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