Browsing by Subject "Incompressible flow"
Now showing items 1-12 of 12
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Article
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 ...
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Article
Comparison of spectral and finite element methods applied to the study of the core-annular flow in an undulating tube
(2002)A Galerkin/finite element and a pseudo-spectral method, in conjunction with the primitive (velocity-pressure) and streamfunction-vorticity formulations, are tested for solving the two-phase flow in a tube, which has a ...
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Article
Efficient treatment of complex geometries for large eddy simulations of turbulent flows
(2004)Incompressible turbulent flow over a backward facing step at Reh=5100 is investigated by large eddy simulations (LES). The ratio of the oncoming boundary layer thickness δ to the step height h was set to 1.2. Additionally ...
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Article
Immersed boundary method for the MHD flows of liquid metals
(2009)Wall-bounded magnetohydrodynamic (MHD hereafter) flows are of great theoretical and practical interest. Even for laminar cases, MHD simulations are associated with very high computational cost due to the resolution ...
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Article
Lagrangian particle dispersion in turbulent flow over a wall mounted obstacle
(2009)Large-eddy simulations (LES) of particle-laden turbulent flows are presented in order to investigate the effects of particle response time on the dispersion patterns of a space developing flow with an obstruction, where ...
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Conference Object
Large eddy simulation of sediment transport for the pulsating flow past a cylinder over a horizontal bed
(International Society of Offshore and Polar Engineers, 2015)In the present work, the suspended, pulsating incompressible flow past a submerged cylinder was examined by means of Large Eddy Simulations (LES). A layer of sandy inertial particles was allowed to move between the cylinder ...
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Article
LES of the flow past a rectangular cylinder using the immersed boundary concept
(2003)Incompressible turbulent flow past a long square cylinder is investigated using large eddy simulations LES). Results are presented and compared with available experimental databases for a Reynolds number Red = 22 000. The ...
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Article
Mechanism for extrusion instabilities in polymer melts
(1999)A mechanism for explaining some of the instabilities observed during the extrusion of polymer melts is further explored. This is based on the combination of non-monotonic slip and elasticity, which permits the existence ...
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Article
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 ...
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Article
A note on the unbounded creeping flow past a sphere for Newtonian fluids with pressure-dependent viscosity
(2015)We investigate theoretically isothermal, incompressible, creeping Newtonian flows past a sphere, under the assumption that the shear viscosity is pressure-dependent, varying either linearly or exponentially with pressure. ...
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Article
On the combined effects of slip, compressibility, and inertia on the Newtonian extrudate-swell flow problem
(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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Article
Weakly compressible Poiseuille flows of a Herschel-Bulkley fluid
(2009)In this work, we derive approximate semi-analytical solutions of the steady, creeping, weakly compressible plane and axisymmetric Poiseuille flows of a Herschel-Bulkley fluid. Since the flow is weakly compressible, the ...