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Combined effects of compressibility and slip in flows of a Herschel-Bulkley fluid
(2013)
In this work, the combined effects of compressibility and slip in Poiseuille flows of Herschel-Bulkley fluids are investigated. The density is assumed to obey a linear equation of state, and wall slip is assumed to follow ...
Newtonian flow in a triangular duct with slip at the wall
(2013)
We consider the Newtonian Poiseuille flow in a tube whose cross-section is an equilateral triangle. It is assumed that boundary slip occurs only above a critical value of the wall shear stress, namely the slip yield stress. ...
Cessation of viscoplastic Poiseuille flow in a square duct with wall slip
(2015)
We solve numerically the cessation of the pressure-driven Poiseuille flow of a Bingham plastic under the assumption that slip occurs along the wall following a generalized Navier-slip law involving a non-zero slip yield ...
Cessation of viscoplastic Poiseuille flow with wall slip
(2014)
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 of the constitutive equation is employed. ...
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. ...
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 ...
Squeeze flow of thixotropic semisolid slurries
(2014)
An essential element for the integration of a semisolid process in the production of complex commercial components is the availability of accurate mathematical and computational tools that could describe both the rheological ...
Viscoplastic flow development in tubes and channels with wall slip
(2016)
The development of Bingham plastic flow in tubes and channels is investigated numerically using the Papanastasiou regularization and finite element simulations. It is assumed that slip occurs along the wall following ...
Cessation of Newtonian circular and plane Couette flows with wall slip and non-zero slip yield stress
(2017)
We solve analytically the cessation flows of a Newtonian fluid in circular and plane Couette geometries assuming that wall slip occurs provided that the wall shear stress exceeds a critical threshold, the slip yield stress. ...
Determination of the rheological parameters of self-compacting concrete matrix using slump flow test
(2010)
The classification of a concrete mixture as self-compacting (SCC) is performed by a series of empirical characterization tests that have been designed to assess not only the flowability of the mixture but also its segregation ...