Fluid Dynamics

, Volume 39, Issue 1, pp 148–161 | Cite as

Generation of Periodic Motions by a Disk Performing Torsional Oscillations in a Viscous, Continuously Stratified Fluid

  • Yu. S. Il'inykh
  • Yu. D. Chashechkin
Article

Abstract

The solution of the problem of nonlinear generation of periodic internal waves by a boundary flow on a vertical cylinder or a horizontal disk performing torsional oscillations in an exponentially stratified fluid is constructed. The calculations are in satisfactory agreement with the results of experiments in which both horizontal and inclined disks of various diameters and a model propeller performing periodic torsional oscillations, including oscillations against a background of uniform rotation, are used as perturbation sources. The experiments were carried out over a wide range of parameters including the laminar, transition, and turbulent flow regimes. The limits of applicability of the proposed analytic theory of wave radiation are determined.

stratified fluid periodic internal waves nonlinear generation theory experiment 

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Copyright information

© Plenum Publishing Corporation 2004

Authors and Affiliations

  • Yu. S. Il'inykh
  • Yu. D. Chashechkin

There are no affiliations available

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