Turbulent channel flow of an elastoviscoplastic fluid

@article{Rosti2018TurbulentCF,
  title={Turbulent channel flow of an elastoviscoplastic fluid},
  author={Marco Edoardo Rosti and Daulet Izbassarov and Outi Tammisola and Sarah Hormozi and Luca Brandt},
  journal={Journal of Fluid Mechanics},
  year={2018},
  volume={853},
  pages={488 - 514}
}
We present numerical simulations of laminar and turbulent channel flow of an elastoviscoplastic fluid. The non-Newtonian flow is simulated by solving the full incompressible Navier–Stokes equations coupled with the evolution equation for the elastoviscoplastic stress tensor. The laminar simulations are carried out for a wide range of Reynolds numbers, Bingham numbers and ratios of the fluid and total viscosity, while the turbulent flow simulations are performed at a fixed bulk Reynolds number… 

Effect of finite Weissenberg number on turbulent channel flows of an elastoviscoplastic fluid

Abstract Direct numerical simulations are carried out to study the effect of finite Weissenberg number up to $Wi=16$ on laminar and turbulent channel flows of an elastoviscoplastic (EVP) fluid, at a

Coherent structures in the turbulent channel flow of an elastoviscoplastic fluid

In this numerical and theoretical work, we study the turbulent channel flow of Newtonian and elastoviscoplastic fluids. The coherent structures in these flows are identified by means of higher order

Droplets in homogeneous shear turbulence

We simulate the flow of two immiscible and incompressible fluids separated by an interface in a homogeneous turbulent shear flow at a shear Reynolds number equal to 15 200. The viscosity and density

Numerical simulations of a sphere settling in simple shear flows of yield stress fluids

We perform three-dimensional numerical simulations to investigate the sedimentation of a single sphere in the absence and presence of a simple cross-shear flow in a yield stress fluid with weak

Turbulent duct flow with polymers

We have performed direct numerical simulation of the turbulent flow of a polymer solution in a square duct, with the FENE-P model used to simulate the presence of polymers. First, a simulation at a

Interface-resolved numerical simulations of particle-laden turbulent flows in a vertical channel filled with Bingham fluids

In this paper, a fictitious domain method is used to perform interface-resolved numerical simulations of particle-laden turbulent flows in a vertical channel filled with Bingham fluids. The

A PIV investigation of laminar and turbulent viscoplastic fluid flow on axisymmetric abrupt contraction

The current work is devoted to analyzing viscoplastic fluid flow in a circular axisymmetric abrupt contraction with ratio D/d=1.85 . The velocity fields and static pressure along a hydraulic loop

Finite-size spherical particles in a square duct flow of an elastoviscoplastic fluid: an experimental study

The present experimental study addresses the flow of a yield stress fluid with some elasticity (Carbopol gel) in a square duct. The behaviour of two fluids with lower and higher yield stress is

References

SHOWING 1-10 OF 69 REFERENCES

Numerical simulation of turbulent channel flow over a viscous hyper-elastic wall

We perform numerical simulations of a turbulent channel flow over an hyper-elastic wall. In the fluid region the flow is governed by the incompressible Navier–Stokes (NS) equations, while the solid

Elastoviscoplastic flow in porous media

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

Pseudospectral simulation of turbulent viscoelastic channel flow

Turbulent duct flow with polymers

We have performed direct numerical simulation of the turbulent flow of a polymer solution in a square duct, with the FENE-P model used to simulate the presence of polymers. First, a simulation at a

Pipe flow of a thixotropic liquid

Laminar, transitional and turbulent flow of Herschel–Bulkley fluids in concentric annulus

An integrated approach is presented for the flow of Herschel–Bulkley fluids in a concentric annulus, modelled as a slot, covering the full range of flow types, laminar, transitional, and turbulent
...