Periodic oscillations of low Prandtl-number fluids in rectangular enclosures

Crunkleton, Daniel W.; Narayanan, Ranga; Anderson, Timothy J.
January 2000
AIP Conference Proceedings;2000, Vol. 504 Issue 1, p866
Academic Journal
Periodic oscillatory flows in low Prandtl-number fluids are numerically characterized in this study. A mathematical model is developed to solve the three-dimensional mass and momentum conservation equations using a control-volume algorithm. For various aspect ratios, the second critical Rayleigh number is determined. For an aspect ratio (length/height) of 0.25, macroscopic oscillations are unmistakably observed; while as the aspect ratio is increased, oscillations tend to dampen. © 2000 American Institute of Physics.


Related Articles

  • Nonlinear transient free-surface flow and dip formation due to a point sink. Miloh, Touvia; Tyvand, Peder A. // Physics of Fluids A;Jun93, Vol. 5 Issue 6, p1368 

    The early free-surface flow due to an impulsively started point sink in a semi-infinite fluid is analytically studied by employing a power series expansion in time. The full surface elevation to second order is calculated, as well as the third-order elevation at the surface center just above the...

  • Non-isothermal modification of purely elastic flow instabilities in torsional flows of polymeric fluids. Rothstein, Jonathan P.; McKinley, Gareth H. // Physics of Fluids;Feb2001, Vol. 13 Issue 2, p382 

    Previous experimental measurements and linear stability analyses of curvilinear shearing flows of viscoelastic fluids have shown that the combination of streamwise curvature and elastic normal stresses can lead to flow destabilization. Torsional shear flows of highly elastic fluids with closed...

  • Numerical evidence of smooth self-similar dynamics and possibility of subsequent collapse for three-dimensional ideal flows. Brachet, M. E.; Meneguzzi, M.; Vincent, A.; Politano, H.; Sulem, P. L. // Physics of Fluids A;Dec92, Vol. 4 Issue 12, p2845 

    Direct numerical simulations of the three-dimensional Euler equations at resolutions up to 2563 for general periodic flows and 8643 for the symmetric Taylor�Green vortex are presented. The spontaneous emergence of flat pancakelike structures that shrink exponentially in time is observed. A...

  • Erratum: ��The partial-equilibrium approximation in reacting flows�� [Phys. Fluids A 4, 873 (1992)]. Rein, M. // Physics of Fluids A;Dec92, Vol. 4 Issue 12, p2930 

    Provides correction to the article titled 'The partial-equilibrium approximation in reacting flows,' by M. Rein which was published in 'Physics of Fluids.'

  • The pressure�dilatation correlation in compressible flows. Sarkar, S. // Physics of Fluids A;Dec92, Vol. 4 Issue 12, p2674 

    Simulations of simple compressible flows have been performed to enable the direct estimation of the pressure�dilatation correlation. The generally accepted belief that this correlation may be important in high-speed flows has been verified by the simulations. The pressure�dilatation...

  • Vortex drift. II: The flow potential surrounding a drifting vortical region. Rott, Nicholas; Cantwell, Brian // Physics of Fluids A;Jun93, Vol. 5 Issue 6, p1451 

    The potential flowfield surrounding a vortical flow domain is investigated. The vortical region is restricted to a three-dimensional finite domain in an unbounded incompressible viscous fluid that is at rest at infinity. The vector streamfunction of the flow is obtained by the integrals over the...

  • Stabilization and destabilization of channel flow by location of viscosity-stratified fluid layer. Ranganathan, Balaji T.; Govindarajan, Rama // Physics of Fluids;Jan2001, Vol. 13 Issue 1, p1 

    The stability of the channel flow of two fluids of different viscosities with a mixed layer in between is demonstrated to be qualitatively different from both interface dominated flows and stratified flows. More important, this flow displays unexpected changes in stability when the mixed layer...

  • Convective stability of a nonisothermal fluid in a rotating horizontal coaxial gap. Vyatkin, A.; Ivanova, A.; Kozlov, V. // Fluid Dynamics;Feb2010, Vol. 45 Issue 1, p10 

    The thermal fluid convection in a coaxial horizontal gap uniformly rotating about its axis is investigated. The threshold above which convective flows are excited and the structure of these flows are studied. It is found that convection ensues irrespective of whether the inner or outer boundary...

  • Ideal incompressible flow around a wedge tip. Betyaev, S. // Journal of Applied Mechanics & Technical Physics;Mar2007, Vol. 48 Issue 2, p192 

    A planar analog of conical flows is considered: an inviscid incompressible fluid flow around a wedge tip. A class of conical flows is found where vorticity is transported along streamlines by the potential component of velocity. Problems of a wave �locked� in the corner region and of a...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics