Abstract
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 \({\mathbf {c}}\) 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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Communicated by Francesco dell’Isola.
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Perez, M., Scheuer, A., Abisset-Chavanne, E. et al. On the multi-scale description of micro-structured fluids composed of aggregating rods. Continuum Mech. Thermodyn. 31, 955–967 (2019). https://doi.org/10.1007/s00161-018-0659-1
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DOI: https://doi.org/10.1007/s00161-018-0659-1