Drying simulation of a solid slab with three dimensional shrinkage
A mathematical model is developed to simulate the drying of a hygroscopic porous solid. The model, based on the gradient of moisture concentration per unit volume as driving force, takes into account the migration of water within the solid by diffusion and the evaporation at the interface. A mathema...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_07373937_v13_n1-2_p371_Rovedo |
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todo:paper_07373937_v13_n1-2_p371_Rovedo2023-10-03T15:37:50Z Drying simulation of a solid slab with three dimensional shrinkage Rovedo, C.O. Suarez, C. Viollaz, P.E. drying simulation multidirectional shrinkage A mathematical model is developed to simulate the drying of a hygroscopic porous solid. The model, based on the gradient of moisture concentration per unit volume as driving force, takes into account the migration of water within the solid by diffusion and the evaporation at the interface. A mathematical equation for diffusion in a slab with three dimensional shrinkage has been derived, assuming that the magnitude of shrinkage is equal to the volume of water evaporated. The resulting diffusion equation and the heat balance equation for infinite thermal conductivity were solved numerically with temperature dependent diffusion coefficient and convective boundary conditions. The dependence of the desorption isotherm with temperature is also considered. Combination of all these factors in a single model provides a tool that is effective in predicting drying behavior and also useful in exploring and understanding the impact of important variables on the drying process. © 1995, Taylor & Francis Group, LLC. All rights reserved. Fil:Rovedo, C.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07373937_v13_n1-2_p371_Rovedo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
drying simulation multidirectional shrinkage |
| spellingShingle |
drying simulation multidirectional shrinkage Rovedo, C.O. Suarez, C. Viollaz, P.E. Drying simulation of a solid slab with three dimensional shrinkage |
| topic_facet |
drying simulation multidirectional shrinkage |
| description |
A mathematical model is developed to simulate the drying of a hygroscopic porous solid. The model, based on the gradient of moisture concentration per unit volume as driving force, takes into account the migration of water within the solid by diffusion and the evaporation at the interface. A mathematical equation for diffusion in a slab with three dimensional shrinkage has been derived, assuming that the magnitude of shrinkage is equal to the volume of water evaporated. The resulting diffusion equation and the heat balance equation for infinite thermal conductivity were solved numerically with temperature dependent diffusion coefficient and convective boundary conditions. The dependence of the desorption isotherm with temperature is also considered. Combination of all these factors in a single model provides a tool that is effective in predicting drying behavior and also useful in exploring and understanding the impact of important variables on the drying process. © 1995, Taylor & Francis Group, LLC. All rights reserved. |
| format |
JOUR |
| author |
Rovedo, C.O. Suarez, C. Viollaz, P.E. |
| author_facet |
Rovedo, C.O. Suarez, C. Viollaz, P.E. |
| author_sort |
Rovedo, C.O. |
| title |
Drying simulation of a solid slab with three dimensional shrinkage |
| title_short |
Drying simulation of a solid slab with three dimensional shrinkage |
| title_full |
Drying simulation of a solid slab with three dimensional shrinkage |
| title_fullStr |
Drying simulation of a solid slab with three dimensional shrinkage |
| title_full_unstemmed |
Drying simulation of a solid slab with three dimensional shrinkage |
| title_sort |
drying simulation of a solid slab with three dimensional shrinkage |
| url |
http://hdl.handle.net/20.500.12110/paper_07373937_v13_n1-2_p371_Rovedo |
| work_keys_str_mv |
AT rovedoco dryingsimulationofasolidslabwiththreedimensionalshrinkage AT suarezc dryingsimulationofasolidslabwiththreedimensionalshrinkage AT viollazpe dryingsimulationofasolidslabwiththreedimensionalshrinkage |
| _version_ |
1807321673588801536 |