Browsing by Subject "Vortex flow"
Now showing items 1-10 of 10
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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
Direct numerical simulation of particle laden flow in a human airway bifurcation model
(2016)During the delivery of inhaled medicines, and depending on the size distribution of the particles in the formulation, airway bifurcations are areas of preferential deposition. Previous studies of laminar flow through airway ...
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Article
Large Eddy Simulation of near-bed pipelines in oscillatory flow
(2018)A series of unsteady, three-dimensional numerical simulations of the incompressible, oscillatory flow around a near-bed pipeline is presented. A flow at Reynolds number equal to Reαo=20,000 with respect to the oscillatory ...
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Article
Lopsided vortex cells in rotating Bose-Einstein condensates
(2015)The amplitude |Ψ| of the wavefunction of a repulsive Bose-Einstein condensate in a two-dimensional axisymmetric harmonic trap decreases as we go from the center of the condensate towards its edge. Consequently the wavefunction ...
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Conference Object
Numerical simulations of turbulent flow in an eccentric annulus of unit eccentricity
(TSFP-9, 2015)In this study, we perform Direct Numerical Simulations (DNS) of fully developed turbulent flows in eccentric annuli having different diameter ratios. Annuli of unit eccentricity, and diameter ratios of 0.2591 and 0.1395 ...
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Article
The numerical solution of laminar flow in a re-entrant tube geometry by a Chebyshev spectral element collocation method
(1992)A Chebyshev spectral element collocation method is used for the numerical solution of laminar flow in a re-entrant tube geometry. The high accuracy of the method allows the study of the merging process of the vortices in ...
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Article
On the analogy between streamlined magnetic and solid obstacles
(2009)Analogies are elaborated in the qualitative description of two systems: the magnetohydrodynamic (MHD) flow moving through a region where an external local magnetic field (magnetic obstacle) is applied and the ordinary ...
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Article
A spectral domain decomposition approach for steady Navier-Stokes problems in circular geometries
(1996)In this study, a spectral collocation domain decomposition method is developed for the numerical solution of second and fourth-order problems in circular domains. The method is applied to the Navier-Stokes equations and ...
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Article
Three dimensional flow around a circular cylinder confined in a plane channel
(2011)This paper presents two- and three-dimensional direct numerical simulations of the flow around a circular cylinder placed symmetrically in a plane channel. Results are presented in the Reynolds number range (based on the ...
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Conference Object
Vortex shedding lock-on in a periodic freestream flow past a circular cylinder
(Publ by ASME, 1993)Vortex lock-on phenomena in flow past a circular cylinder with a periodic component superimposed on the mean free stream flow is investigated using concepts from dynamical systems (chaos) theory. Numerical results show ...