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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Detalles Bibliográficos
Autor principal: Rovedo, Clara Ofelia
Publicado: 1995
Materias:
drying simulation
multidirectional shrinkage
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07373937_v13_n1-2_p371_Rovedo
http://hdl.handle.net/20.500.12110/paper_07373937_v13_n1-2_p371_Rovedo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_07373937_v13_n1-2_p371_Rovedo
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spelling paper:paper_07373937_v13_n1-2_p371_Rovedo2023-06-08T15:44:12Z Drying simulation of a solid slab with three dimensional shrinkage Rovedo, Clara Ofelia 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. 1995 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07373937_v13_n1-2_p371_Rovedo 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, Clara Ofelia
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.
author Rovedo, Clara Ofelia
author_facet Rovedo, Clara Ofelia
author_sort Rovedo, Clara Ofelia
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
publishDate 1995
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07373937_v13_n1-2_p371_Rovedo
http://hdl.handle.net/20.500.12110/paper_07373937_v13_n1-2_p371_Rovedo
work_keys_str_mv AT rovedoclaraofelia dryingsimulationofasolidslabwiththreedimensionalshrinkage
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