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Viscoplastic Poiseuille flow in a rectangular duct with wall slip
(2014)
We solve numerically the Poiseuille flow of a Herschel-Bulkley fluid in a duct of rectangular cross section under the assumption that slip occurs along the wall following a slip law involving a non-zero slip yield stress. ...
New analytical solutions for weakly compressible Newtonian Poiseuille flows with pressure-dependent viscosity
(2016)
Steady-state, isothermal, Poiseuille flows in straight channels and circular tubes of weakly compressible Newtonian fluids are considered. The major assumption is that both the mass density and the shear viscosity of the ...
Perturbation solution of Poiseuille flow of a weakly compressible Oldroyd-B fluid
(2011)
The isothermal, planar Poiseuille flow of a weakly compressible Oldroyd-B fluid is considered under the assumption that the density of the fluid obeys a linear equation of state. A perturbation analysis for all the primary ...
Laminar axisymmetric flow of a weakly compressible viscoelastic fluid
(2012)
The combined effects of weak compressibility and viscoelasticity in steady, isothermal, laminar axisymmetric Poiseuille flow are investigated. Viscoelasticity is taken into account by employing the Oldroyd-B constitutive ...
Incompressible Poiseuille flows of Newtonian liquids with a pressure-dependent viscosity
(2011)
The pressure-dependence of the viscosity becomes important in flows where high pressures are encountered. Applications include many polymer processing applications, microfluidics, fluid film lubrication, as well as simulations ...
Start-up and cessation Newtonian Poiseuille and Couette flows with dynamic wall slip
(2015)
Analytical solutions are derived for the start-up and cessation Newtonian Poiseuille and Couette flows with wall slip obeying a dynamic slip model. This slip equation allows for a relaxation time in the development of wall ...
Newtonian Poiseuille flows with slip and non-zero slip yield stress
(2013)
The Newtonian Poiseuille flow is considered for various geometries, under the assumption that wall slip occurs above a critical value of the wall shear stress known as, the slip yield stress. In the axisymmetric and planar ...
Slip yield stress effects in start-up Newtonian Poiseuille flows
(2013)
Analytical solutions are derived for various start-up Newtonian Poiseuille flows assuming that slip at the wall occurs when the wall shear stress exceeds a critical value, known as the slip yield stress. Two distinct regimes ...
Effect of posture change on the geometric features of the healthy carotid bifurcation
(2011)
Segmented cross-sectional MRI images were used to construct 3-D virtual models of the carotid bifurcation in ten healthy volunteers. Geometric features, such as bifurcation angle, internal carotid artery (ICA) angle, ...
The Effect of Head Rotation on the Geometry and Hemodynamics of Healthy Vertebral Arteries
(2015)
The geometric and hemodynamic characteristics of the left and right vertebral arteries (LVA, RVA) of six healthy volunteers were investigated for the supine (S) and the prone position (P) a common sleeping posture with ...