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Thermal Sciences 2004. Proceedings of the ASME - ZSIS International Thermal Science Seminar II
June, 13-16, 2004, Bled, Slovenia

DOI: 10.1615/ICHMT.2004.IntThermSciSemin


ISBN Print: 978-9-61913-930-1

Continuum Thermodynamic Modeling of Drying Capillary Particulate Materials via an Improved Edge-based Algorithm

pages 199-204
DOI: 10.1615/ICHMT.2004.IntThermSciSemin.180
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RESUMO

The numerical modeling of the coupled heat and mass transfer processes prevalent in drying non-hygroscopic and hygroscopic capillary porous materials is dealt with. A set of volume averaged governing equations is employed for this purpose. An improved hybrid unstructured vertex-centered edge-based finite volume algorithm is used for spatial discretization purposes. 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 and hygroscopic material is modeled. Predicted results are shown to compare well with experimental data.

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