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Turbulent Taylor-Couette flow

, 2017
Zhu, Xiaojue, Verschoof, Ruben A., Bakhuis, Dennis, Huisman, Sander G., Monico, Rodolfo Ostilla, Grossmann, Siegfried, Verzicco, Roberto, Sun, Chao, Lohse, Detlef   +8 more
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Modulated Taylor–Couette flow

Journal of Fluid Mechanics, 1989
The onset of instability in temporally modulated Taylor-Couette flow is considered. Critical Reynolds numbers have been found by computing Floquet exponents. We find that frequency modulation of the inner cylinder introduces a small destabilization, in agreement with the narrow-gap theory of Hall and some recent experiments of Ahlers.
Barenghi, C. F., Jones, C. A.
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Turbulent Couette Flow

Journal of Fluids Engineering, 1974
Turbulent flow between concentric rotating cylinders is analyzed using an energy balance hypothesis proposed by Zagustin. Predictions of the mean velocity profiles are obtained without any additional assumptions regarding the distribution of mixing length. The theoretical results compare favorably with previous observations with only the inner or outer
A. K. Wang, L. W. Gelhar
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Turbulence in plane Couette flow

Applied Scientific Research, 1993
Experimental results for fully developed turbulent plane Couette flow are reported and compared to earlier experimental and numerical results. In addition some turbulent statistics not previously reported are shown.
Nils Tillmark, P. Henrik Alfredsson
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The spherical Taylor–Couette flow

European Journal of Mechanics - B/Fluids, 2016
The instability modes that lead to turbulence between two concentric spheres, the inner one rotating while the outer is at rest, are investigated through visualization and using the electrodiffusion (ED) method. The wall velocity gradients are measured for the first time in a spherical shell by ED method.
Mahloul, M., Mahamdia, A., Kristiawan, Magdalena   +2 more
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Modelling plane turbulent Couette flow

Fluid Dynamics Conference, 1994
Abstract Among the salient features of shear-driven plane Couette flow is the constancy of the total shear stress (viscous and turbulent) across the flow. This constancy gives rise to a quasi-homogenous core region, which makes the bulk of the flow substantially different from pressure-driven Poiseuille flow.
H.I. Andersson, B.A. Pettersson
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Unsteady Couette granular flows

Physics of Fluids, 1997
Unsteady Couette granular flows are investigated both theoretically and by the means of the discrete element method (DEM). Theoretical formulation of the problem is based on the kinetic theory for smooth, nearly elastic particles. The resulting boundary value problem is solved numerically for two particular types of flows: (a) transient Couette flows ...
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Stability of modulated Couette flow

Physical Review Letters, 1987
The stability of modulated Couette flow is studied by modulation of the angular velocity, \ensuremath{\Omega}, of the inner cylinder according to \ensuremath{\Omega}=\ensuremath{\Omega}\ifmmode\bar\else\textasciimacron\fi{}[1+\ensuremath{\epsilon} cos(\ensuremath{\omega}t)], where \ensuremath{\Omega}\ifmmode\bar\else\textasciimacron\fi{} is the mean ...
, Walsh, , Wagner, , Donnelly
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Ramped Taylor-Couette flow

Physical Review A, 1985
Presentation de commentaires sur la selection du nombre d'onde lorsque le rapport des rayons varie le long de l'axe du cylindre de telle sorte que l'ecoulement de Taylor-Couette passe de sous critique a supercritique. On montre que dans certaines circonstances bien definies, le nombre d'onde est determine de facon unique par la ...
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Torsional-Couette-Flow HiGee

Chemical Engineering and Processing - Process Intensification, 2020
Abstract We proposed a HiGee fundamentally different from the present-day HiGees. A separated two-phase flow prevails in the proposed HiGee in contrast to an interpenetrated flow in other HiGees. It comprises of a rotating disc placed in the middle of two stationary discs which are enclosed in a casing.
D.P. Rao, R.C. Mehta
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