Lumped-differential formulations for drying in capillary porous media
- Univ. Federal do Rio de Janeiro (Brazil). Mechanical Engineering Dept.
Simultaneous heat and mass transfer, during drying of moist capillary porous media, is modeled through different lumped-differential formulations, obtained from spatial integration of the original set of Luikov`s equations for temperature and moisture potential. Besides the classical lumped system analysis, improved formulations are proposed, of same mathematical simplicity, based on approximate evaluations of both temperature and moisture gradients within the medium. The relative merits of such improved zero-dimensional formulations are established, through critical comparisons against analytical solutions for the full partial differential system, over a wide range of the governing parameters.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 516853
- Journal Information:
- Drying Technology, Journal Name: Drying Technology Journal Issue: 3-4 Vol. 15; ISSN DRTEDQ; ISSN 0737-3937
- Country of Publication:
- United States
- Language:
- English
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