A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results
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| Format: | Artículo científico |
| Langue: | en |
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Universidad del Bío Bío
2008
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| _version_ | 1876438063707586560 |
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| author | Patrick Perré |
| author_facet | Patrick Perré |
| contents | A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results Patrick Perré Ian W. Turner Agrociencias wood properties heat and mass transfer computational modelling Heterogeneous porous medium 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 fi eld 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 fl atsawn 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. 2008 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48510308 en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.3 Vol.10 |
| format | Artículo científico |
| id | redalyc_48510308 |
| institution | Redalyc |
| language | en |
| publishDate | 2008 |
| publisher | Universidad del Bío Bío |
| spellingShingle | A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results Patrick Perré Agrociencias wood properties heat and mass transfer computational modelling Heterogeneous porous medium A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results Patrick Perré Ian W. Turner Agrociencias wood properties heat and mass transfer computational modelling Heterogeneous porous medium 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 fi eld 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 fl atsawn 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. 2008 artículo científico 0717-3644 https://www.redalyc.org/articulo.oa?id=48510308 en http://www.redalyc.org/revista.oa?id=485 Maderas. Ciencia y Tecnología application/pdf Universidad del Bío Bío Maderas. Ciencia y Tecnología (Chile) Num.3 Vol.10 |
| title | A mesoscopic drying model applied to the growth rings of softwood: mesh generation and simulation results |
| topic | Agrociencias wood properties heat and mass transfer computational modelling Heterogeneous porous medium |
| url | https://www.redalyc.org/articulo.oa?id=48510308 |