工艺与制造英文2021
考虑毛细管效应的双相流动模拟P1/P1有限元框架
A P1/P1 Finite Element Framework for Taking Into Account Capillary Effects in Biphasic Flow Simulations
Loïc Chevalier, Julien Bruchon, Nicolas Moulin, Pierre‐Jacques Liotier, S. Drapier · Université Claude Bernard Lyon 1
摘要整理
本文提出了一种基于稳定化有限元方法的计算策略，用于模拟纤维微观结构中具有毛细管效应的双流体流动。在该框架中，三相接触线平衡条件作为自然边界条件被引入Stokes问题的弱形式中。研究选取了两种二维微观结构模型——六边形规则结构和随机结构，并从数值渗透率和毛细压力两个方面进行了系统分析。该方法有效处理了纤维增强复合材料制造过程中的两相流动问题，特别是在树脂传递模塑（RTM）等液体成型工艺中的应用。通过稳定化有限元离散化，避免了速度-压力场耦合求解中的数值不稳定性。数值结果表明，微观结构的几何特征对流动特性和毛细压力分布有显著影响，为优化复合材料工艺参数提供了理论依据。
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