Numerical simulations of complex yield-stress fluid flows

E Mitsoulis, J Tsamopoulos - Rheologica Acta, 2017 - Springer
Viscoplasticity is characterized by a yield stress, below which the materials will not deform
and above which they will deform and flow according to different constitutive relations …

Factors affecting the rheology and processability of highly filled suspensions

DM Kalyon, S Aktaş - Annual review of chemical and …, 2014 - annualreviews.org
Suspensions filled with rigid particles at volume-loading levels that approach their maximum
packing fraction are widely encountered, especially in the energetics, ceramics …

Shear viscosity and wall slip behavior of a viscoplastic hydrogel

S Aktas, DM Kalyon, BM Marín-Santibáñez… - Journal of …, 2014 - pubs.aip.org
The coupled apparent slip and viscoplastic behavior of a hydrogel consisting of 0.2 wt.%
aqueous solution of poly (acrylic acid) was analyzed employing steady torsional and circular …

Combined effects of magnetic field and rheological properties on the peristaltic flow of a compressible fluid in a microfluidic channel

SI Abdelsalam, K Vafai - European Journal of Mechanics-B/Fluids, 2017 - Elsevier
The MHD peristaltic motion of a compressible and electrically conducting Jeffrey fluid
induced by a surface acoustic wave in a confined parallel-plane microchannel through a …

Cessation of viscoplastic Poiseuille flow with wall slip

Y Damianou, M Philippou, G Kaoullas… - Journal of Non …, 2014 - Elsevier
We solve numerically the cessation of axisymmetric Poiseuille flow of a Herschel–Bulkley
fluid under the assumption that slip occurs along the wall. The Papanastasiou regularization …

Magneto-hydrodynamics second grade compressible fluid flow in a wavy channel under peristalsis: Application to thermal energy

R Rafaqat, AA Khan, A Zaman, F Mabood… - Journal of Energy …, 2022 - Elsevier
The present work is aimed to explore the peristaltic transport characteristics of a
compressible fluid under the impact of magnetic field inside a wavy channel. The interior of …

Simulation of co-rotating twin screw extrusion process subject to pressure-dependent wall slip at barrel and screw surfaces: 3D FEM analysis for combinations of …

M Malik, DM Kalyon, JC Golba Jr - International Polymer Processing, 2014 - degruyter.com
Mathematical modeling and simulation of the coupled flow, deformation, heat and mass
transfer, and rate of reactions occurring in the twin screw extruder allow the optimization of …

Axial annular flow of a viscoplastic microgel with wall slip

JF Ortega-Avila, J Pérez-González… - Journal of …, 2016 - pubs.aip.org
The fully developed velocity distributions of a viscoplastic Carbopol microgel [0.12 wt.% poly
(acrylic acid) in water] flowing axially in the annular gap between two long concentric …

Advances and challenges in the high-pressure rheology of complex fluids

A Ahuja, R Lee, YM Joshi - Advances in Colloid and Interface Science, 2021 - Elsevier
Complex fluids and soft materials are ubiquitous in nature and industry. In industrial
processes, these materials often get exposed to high hydrostatic pressures. Some examples …

Exact solutions to Navier–Stokes equations describing a gradient nonuniform unidirectional vertical vortex fluid flow

N Burmasheva, E Prosviryakov - Dynamics, 2022 - mdpi.com
The paper announces a family of exact solutions to Navier–Stokes equations describing
gradient inhomogeneous unidirectional fluid motions (nonuniform Poiseuille flows). The …