Towards void formation and permeability predictions in LCM processes: A computational bifluid-solid mechanics framework dealing with capillarity and wetting issues

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• 作者：Yujie Liu ^{yujie.liu@emse.fr" class="auth_mail" title="E-mail the corresponding author} ; Nicolas Moulin ; ^{nicolas.moulin@emse.fr" class="auth_mail" title="E-mail the corresponding author} ; Julien Bruchon ^{bruchon@emse.fr" class="auth_mail" title="E-mail the corresponding author} ; Pierre-Jacques Liotier ^{liotier@emse.fr" class="auth_mail" title="E-mail the corresponding author} ; Sylvain Drapier ^{drapier@emse.fr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Composite material ; Porosities ; Capillarity ; Wetting ; Bifluid model ; Level Set ; Stokes ; Finite element
• 刊名：Comptes Rendus Mécanique
• 出版年：2016
• 出版时间：April-May 2016
• 年：2016
• 卷：344
• 期：4-5
• 页码：236-250
• 全文大小：2507 K

文摘

A bifluid–solid contact model involving surface tension and wetting effects is developed within a finite element framework, in order to provide an accurate characterization of the fluids and fibrous behaviours during Liquid Composite Molding processes. This model is based on a Eulerian approach of two immiscible fluid (resin/air) domains with boundary conditions which prescribe wetting phenomena at fluid/fiber interfaces. The fluid interface is described by the Level Set method, on which capillary force is considered. Numerical simulations of a drop evolution with wetting effects are used to illustrate this challenging physical problem.