On the multi-scale description of micro-structured fluids composed of aggregating rods
SCHEUER, Adrien
Université Catholique de Louvain = Catholic University of Louvain [UCL]
ESI Group [ESI Group]
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Université Catholique de Louvain = Catholic University of Louvain [UCL]
ESI Group [ESI Group]
SCHEUER, Adrien
Université Catholique de Louvain = Catholic University of Louvain [UCL]
ESI Group [ESI Group]
< Reduce
Université Catholique de Louvain = Catholic University of Louvain [UCL]
ESI Group [ESI Group]
Language
en
Article de revue
This item was published in
Continuum Mechanics and Thermodynamics. 2019, vol. 31, n° 4, p. 955-967
Springer Verlag
English 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 ...Read more >
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.Read less <
English Keywords
Non-ellipsoidal particles
Multi-scale modelling
Jeffery’s equation
Aggregate
Cluster
Concentrated suspensions
Origin
Hal imported