A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results

A mesoscopic drying model that enables the drying simulation of quartersawn and flatsawn wood sections consisting of several growth rings is presented. The procedure to generate the virtual board description directly from real sample images is also described. This virtual structure accommodates the...

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Autores principales:	Perré,Patrick, Turner,Ian W
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2008
Materias:	Heterogeneous porous medium wood properties heat and mass transfer computational modelling
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2008000300008
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spelling	oai:scielo:S0718-221X20080003000082009-08-19A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation resultsPerré,PatrickTurner,Ian W Heterogeneous porous medium wood properties heat and mass transfer computational modelling A mesoscopic drying model that enables the drying simulation of quartersawn and flatsawn wood sections consisting of several growth rings is presented. The procedure to generate the virtual board description directly from real sample images is also described. This virtual structure accommodates the prominent sample features, including its geometrical and physical properties, together with the density and structural variation across the growth rings. We give a synopsis of the sophisticated techniques developed specifically to generate this virtual description and exhibit the final computational meshes produced by the software for quartersawn and flatsawn sections. Low temperature drying simulations are then performed for both heterogenous and homogeneous model variants using these virtual descriptions and comparisons are made of the resulting MC field evolution. A highlight of these comparisons is that the heterogeneous model captures realistic drying effects, including the fast drying of earlywood and the late removal of liquid water in latewood. In comparing the drying of quartersawn and flatsawn boards we conclude that the effect of the heterogeneous nature of the MC fields is diminished somewhat when considering the flatsawn section over the quartersawn section.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.10 n.3 20082008-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2008000300008en10.4067/S0718-221X2008000300008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Heterogeneous porous medium wood properties heat and mass transfer computational modelling
spellingShingle	Heterogeneous porous medium wood properties heat and mass transfer computational modelling Perré,Patrick Turner,Ian W A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results
description	A mesoscopic drying model that enables the drying simulation of quartersawn and flatsawn wood sections consisting of several growth rings is presented. The procedure to generate the virtual board description directly from real sample images is also described. This virtual structure accommodates the prominent sample features, including its geometrical and physical properties, together with the density and structural variation across the growth rings. We give a synopsis of the sophisticated techniques developed specifically to generate this virtual description and exhibit the final computational meshes produced by the software for quartersawn and flatsawn sections. Low temperature drying simulations are then performed for both heterogenous and homogeneous model variants using these virtual descriptions and comparisons are made of the resulting MC field evolution. A highlight of these comparisons is that the heterogeneous model captures realistic drying effects, including the fast drying of earlywood and the late removal of liquid water in latewood. In comparing the drying of quartersawn and flatsawn boards we conclude that the effect of the heterogeneous nature of the MC fields is diminished somewhat when considering the flatsawn section over the quartersawn section.
author	Perré,Patrick Turner,Ian W
author_facet	Perré,Patrick Turner,Ian W
author_sort	Perré,Patrick
title	A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results
title_short	A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results
title_full	A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results
title_fullStr	A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results
title_full_unstemmed	A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results
title_sort	mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results
publisher	Universidad del Bío-Bío
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2008000300008
work_keys_str_mv	AT perrepatrick amesoscopicdryingmodelappliedtothegrowthringsofsoftwoodmeshgenerationandsimulationresults AT turnerianw amesoscopicdryingmodelappliedtothegrowthringsofsoftwoodmeshgenerationandsimulationresults AT perrepatrick mesoscopicdryingmodelappliedtothegrowthringsofsoftwoodmeshgenerationandsimulationresults AT turnerianw mesoscopicdryingmodelappliedtothegrowthringsofsoftwoodmeshgenerationandsimulationresults
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A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results

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