Multiphase flow in the vascular system of wood: From microscopic exploration to 3-D Lattice Boltzmann experiments |
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Authors: | X. Frank,G. Almeida,P. Perré |
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Affiliation: | 1. INRA, UMR 1092 LERFOB, F-54042 Nancy cedex, France;2. USP, ESALQ (Luiz de Queiroz College of Agriculture), Brazil;3. AgroParisTech, UMR 1092 LERFOB, ENGREF 14, rue Girardet F-54042 Nancy cedex, France |
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Abstract: | This paper provides insights into liquid free water dynamics in wood vessels based on Lattice Boltzmann experiments. The anatomy of real wood samples was reconstructed from systematic 3-D analyses of the vessel contours derived from successive microscopic images. This virtual vascular system was then used to supply fluid–solid boundary conditions to a two-phase Lattice Boltzmann scheme and investigate capillary invasion of this hydrophilic porous medium. Behavior of the liquid phase was strongly dependent on anatomical features, especially vessel bifurcations and reconnections. Various parameters were examined in numerical experiments with ideal vessel bifurcations, to clarify our interpretation of these features. |
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Keywords: | Multiphase Wood 3D modelling Image processing Lattice Boltzmann Vascular Morphology |
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