Complex flows of micro/nano structured fluids: Reinforced polymer composites

Francisco Chinesta (1) , Emmanuelle Abisset-Chavanne (1) , Amine Ammar (2) , Roland Keunings (3)

1 GeM - Institut de Recherche en Génie Civil et Mécanique
2 LAMPA - Laboratoire Angevin de Mécanique, Procédés et InnovAtion
3 ICTEAM - Institute of Information and Communication Technologies, Electronics and Applied Mathematics

The motion of an ellipsoidal particle immersed in a flow of a Newtonian fluid was obtained in the pioneering work of Jeffery in 1922. Suspensions of industrial interest usually involve particles with a variety of shapes. Moreover, suspensions composed of rods (a limit case of an ellipsoid) aggregate, leading to clusters with particular shapes that exhibit, when immersed in a flow, an almost rigid motion. In this work, we revisit the modeling and simulation of suspensions involving rods throughout the different scales of description (microscopic, mesoscopic and macroscopic) and the different concentration regimes: dilute, semi-dilute, semi-concentrated and concentrated, involving gradually richer physics.

Mots clés: Suspensions; Multi-scale description; Numerical simulation

Domaines: Mécanique [physics]

Francisco Chinesta, Emmanuelle Abisset-Chavanne, Amine Ammar, Roland Keunings. Complex flows of micro/nano structured fluids: Reinforced polymer composites. 12e Colloque national en calcul des structures, CSMA, May 2015, Giens, France. ⟨hal-01516625⟩