Collagen Fiber Network Infiltration: Permeability and Capillary Infiltration |
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Authors: | Elsa Vennat Denis Aubry Michel Degrange |
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Institution: | (1) Graduated School of Science and Technology, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263, Japan;(2) Faculty of Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263, Japan |
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Abstract: | In dentin restoration, collagen fiber network infiltration is an issue. Using data from the literature, we have constructed
a relevant numerical geometrical model of the network. The specificity of our model is that the fibers are taken into account
implicitly using a regularized Heaviside function. This function is either used to set the viscosity or to localize the contact
line where capillary forces are applied. A level set technique with respect to fluid infiltration front tracking in five fiber
networks using the level set method and Navier–Stokes equations with capillary terms is used to point out efficient critical
infiltration parameters. A variational formulation which can be implemented in a finite elements model is proposed both for
the infiltration front and the contact line. Because of lack of knowledge on fiber orientation, different configurations were
tested through permeability assessment of the whole network. Fiber orientation, interfibrillar space and contact angle influence
were investigated. |
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Keywords: | |
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