# Numerical simulations of emulsions in shear flows

@article{Rosti2018NumericalSO, title={Numerical simulations of emulsions in shear flows}, author={Marco Edoardo Rosti and Francesco De Vita and Luca Brandt}, journal={Acta Mechanica}, year={2018}, volume={230}, pages={667-682} }

We present a modification of a recently developed volume of fluid method for multiphase problems (Ii et al. in J Comput Phys 231(5):2328–2358, 2012), so that it can be used in conjunction with a fractional-step method and fast Poisson solver, and validate it with standard benchmark problems. We then consider emulsions of two-fluid systems and study their rheology in a plane Couette flow in the limit of vanishing inertia. We examine the dependency of the effective viscosity $$\mu $$μ on the…

## 36 Citations

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## References

SHOWING 1-10 OF 75 REFERENCES

### Numerical simulation of a concentrated emulsion in shear flow

- Engineering, PhysicsJournal of Fluid Mechanics
- 1996

A three-dimensional computer simulation of a concentrated emulsion in shear flow has been developed for low-Reynolds-number finite-capillary-number conditions. Numerical results have been obtained…

### Rheology of a dense suspension of spherical capsules under simple shear flow

- EngineeringJournal of Fluid Mechanics
- 2015

We present a numerical analysis of the rheology of a dense suspension of spherical capsules in simple shear flow in the Stokes flow regime. The behaviour of neo-Hookean capsules is simulated for a…

### Suspensions of deformable particles in a Couette flow

- EngineeringJournal of Non-Newtonian Fluid Mechanics
- 2018

### The characterization of the total stress of concentrated suspensions of noncolloidal spheres in Newtonian fluids

- Engineering
- 2000

The total stress of a concentrated suspension of noncolloidal spheres in a Newtonian fluid was characterized by independent measurements in viscometric flows. Using a suspension balance formulation,…

### Suspension properties at finite Reynolds number from simulated shear flow

- Physics
- 2008

This work examines the role of particle-scale inertia in a monodisperse suspension of non-Brownian and neutrally buoyant spherical particles subjected to simple-shear flow. The dimensionless…

### Turbulent channel flow of dense suspensions of neutrally buoyant spheres

- Physics, EngineeringJournal of Fluid Mechanics
- 2015

Abstract Dense particle suspensions are widely encountered in many applications and in environmental flows. While many previous studies investigate their rheological properties in laminar flows,…

### Numerical Simulation of Concentrated Emulsion Flows

- Physics, Engineering
- 1998

The macroscopic flow and detailed microphysics of a concentrated emulsion are described with three-dimensional numerical simulations. Numerical predictions for deformable drop interactions in…

### Elastoviscoplastic flow in porous media

- Engineering, Physics
- 2018

We investigate the elastoviscoplastic flow through porous media by numerical simulations. We solve the Navier-Stokes equations combined with the elastoviscoplastic model proposed by Saramito for the…

### Elastoviscoplastic flows in porous media

- Engineering, PhysicsJournal of Non-Newtonian Fluid Mechanics
- 2018

### DIRECT NUMERICAL SIMULATION OF FREE-SURFACE AND INTERFACIAL FLOW

- Physics
- 1999

The numerical simulation of flows with interfaces and free-surface flows is a vast topic, with applications to domains as varied as environment, geophysics, engineering, and fundamental physics. In…