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Article Dans Une Revue Continuum Mechanics and Thermodynamics Année : 2019

On the multi-scale description of micro-structured fluids composed of aggregating rods

Résumé

When addressing the flow of concentrated suspensions composed of rods, dense clusters are observed. Thus, the adequate modelling and simulation of such a flow requires addressing the kinematics of these dense clusters and their impact on the flow in which they are immersed. In a former work, we addressed a first modelling framework of these clusters, assumed so dense that they were considered rigid and their kinematics (flow-induced rotation) were totally defined by a symmetric tensor c with unit trace representing the cluster conformation. Then, the rigid nature of the clusters was relaxed, assuming them deformable, and a model giving the evolution of both the cluster shape and its microstructural orientation descriptor (the so-called shape and orientation tensors) was proposed. This paper compares the predictions coming from those models with finer-scale discrete simulations inspired from molecular dynamics modelling.
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Dates et versions

hal-02163613 , version 1 (24-06-2019)
hal-02163613 , version 2 (28-01-2020)

Identifiants

Citer

Marta Perez, Adrien Scheuer, Emmanuelle Abisset-Chavanne, Amine Ammar, Francisco Chinesta, et al.. On the multi-scale description of micro-structured fluids composed of aggregating rods. Continuum Mechanics and Thermodynamics, 2019, 31 (4), pp.955-967. ⟨10.1007/s00161-018-0659-1⟩. ⟨hal-02163613v2⟩
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