Browsing by Author "Mitsoulis, Evan C."
Now showing items 1-8 of 8
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Cessation of annular Poiseuille flows of Bingham plastics
Chatzimina, Maria Evangelia; Xenophontos, Christos A.; Georgiou, Georgios C.; Argyropaidas, Ioannis; Mitsoulis, Evan C. (2007)We numerically solve the cessation of the annular Poiseuille flow of Bingham plastics for various values of the diameter ratio, using the regularized constitutive equation proposed by Papanastasiou and employing finite ...
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Cessation of Couette and Poiseuille flows of a Bingham plastic and finite stopping times
Chatzimina, Maria Evangelia; Georgiou, Georgios C.; Argyropaidas, Ioannis; Mitsoulis, Evan C.; Huilgol, R. R. (2005)We solve the one-dimensional cessation Couette and Poiseuille flows of a Bingham plastic using the regularized constitutive equation proposed by Papanastasiou and employing finite elements in space and a fully implicit ...
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Numerical simulation of the extrusion of strongly compressible Newtonian liquids
Taliadorou, Eleni G.; Georgiou, Georgios C.; Mitsoulis, Evan C. (2008)The axisymmetric and plane extrusion flows of a liquid foam are simulated assuming that the foam is a homogeneous compressible Newtonian fluid that slips along the walls. Compressibility effects are investigated using both ...
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Numerical simulations of cessation flows of a Bingham plastic with the augmented Lagrangian method
Muravleva, L.; Muravleva, E.; Georgiou, Georgios C.; Mitsoulis, Evan C. (2010)The augmented Lagrangian/Uzawa method has been used to study benchmark one-dimensional cessation flow problems of a Bingham fluid, such as the plane Couette flow, and the plane, round, and annular Poiseuille flows. The ...
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Numerical study of the combined effects of inertia, slip, and compressibility in extrusion of yield stress fluids
Kountouriotis, Zacharias; Georgiou, Georgios C.; Mitsoulis, Evan C. (2014)The axisymmetric extrudate swell flow of a compressible Herschel–Bulkley fluid with wall slip is solved numerically. The Papanastasiou-regularized version of the constitutive equation is employed, together with a linear ...
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On the combined effects of slip, compressibility, and inertia on the Newtonian extrudate-swell flow problem
Kountouriotis, Zacharias; Georgiou, Georgios C.; Mitsoulis, Evan C. (2013)We solve both the planar and axisymmetric extrudate-swell flows of a compressible Newtonian liquid with Navier slip at the wall, using the finite-element method in space and a fully-implicit finite-difference scheme in ...
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A study of various factors affecting Newtonian extrudate swell
Mitsoulis, Evan C.; Georgiou, Georgios C.; Kountouriotis, Zacharias (2012)Finite-element simulations have been undertaken for the benchmark problem of extrudate swell present in extrusion. Both cases of planar and axisymmetric domains were considered under laminar, isothermal, steady-state ...
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Unsteady circular Couette flow of a Bingham plastic with the Augmented Lagrangian Method
Muravleva, L.; Muravleva, E.; Georgiou, Georgios C.; Mitsoulis, Evan C. (2010)Numerical simulations are undertaken for unsteady flows of an ideal Bingham fluid in a circular Couette viscometer. The main difficulties in such simulations are caused by the non-differentiability of the constitutive ...