Microstructure and thickening of dense suspensions under extensional and shear flows
arXiv:1706.01745 · doi:10.1017/jfm.2017.469
Abstract
Dense suspensions are non-Newtonian fluids which exhibit strong shear thickening and normal stress differences. Using numerical simulation of extensional and shear flows, we investigate how rheological properties are determined by the microstructure which is built under flows and by the interactions between particles. By imposing extensional and shear flows, we can assess the degree of flow-type dependence in regimes below and above thickening. Even when the flow-type dependence is hindered, nondissipative responses, such as normal stress differences, are present and characterise the non-Newtonian behaviour of dense suspensions.
arXiv comment11 pages, 6 figures
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Cited by in corpus (12)
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- Shear jamming and fragility in dense suspensions
- System-spanning dynamically jammed region in response to impact of cornstarch and water suspensions
- Normal stress differences in dense suspensions
- Discontinuous shear-thickening in Brownian suspensions
- Shear Reversal in Dense Suspensions: The Challenge to Fabric Evolution Models from Simulation Data
- Constitutive relation for the system-spanning dynamically jammed region in response to impact of cornstarch and water suspensions
- A theoretical framework for steady-state rheometry in generic flow conditions
- Intermittent dilation and its coupling to stress in discontinuous shear thickening suspensions
- Liquid migration in shear thickening suspensions flowing through constrictions
- Shear jamming and fragility of suspensions in a continuum model with elastic constraints
- Predictions of microstructure and stress in planar extensional flows of a dense viscous suspension