Weak temperature gradient effect on the stability of the circular Couette flow

V. Lepiller, A. Goharzadeh, A. Prigent and I. Mutabazi ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2008, vol. 61, issue 4, 445-455

Abstract: We have investigated the influence of a weak radial temperature gradient in a wide gap and large aspect ratio Couette-Taylor system. The inner cylinder is rotating and can be heated or cooled, the outer cylinder is at rest and immersed in a large thermal bath. We found that a radial temperature gradient destabilizes the Couette flow leading to a pattern of traveling helicoidal vortices occurring only near the bottom of the system. The size of the pattern increases as the rotation frequency of the cylinder is increased. We have characterized the spatiotemporal properties of the pattern and we have shown that it behaves as a wall mode found in the simulation of the complex Ginzburg-Landau equation with homogeneous boundary conditions. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Keywords: 47.20.Qr Centrifugal instabilities (e.g., Taylor-Couette flow), 47.50.Qj Instabilities, 47.54.-r Pattern selection; pattern formation, 82.40. Pattern formation in flow and heat transfer, (search for similar items in EconPapers)
Date: 2008
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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DOI: 10.1140/epjb/e2008-00105-2

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