Summary
The wake of a torus is studied in the Reynolds number range [50, 300]. In the periodic regime different modes of vortex shedding, parallel closed rings or oblique helical lines of vortices, have been observed. We present their limits of stability as functions of the control parameter. At higher Reynolds number a chaotic regime of vortex shedding is characterized by a discontinuity in the velocity-frequency relation. Both these regimes are well described by the GinzburgLandau equation which allows to interprete many phenomena as consequences of the Eckaus or Benjamin-Feir instabilities.
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© 1996 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/Wiesbaden
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Provansal, M., Leweke, T. (1996). The Modelling of the Wake of a Torus by the Ginzburg-Landau Equation. In: Deville, M., Gavrilakis, S., Ryhming, I.L. (eds) Computation of Three-Dimensional Complex Flows. Notes on Numerical Fluid Mechanics (NNFM), vol 49. Vieweg+Teubner Verlag. https://doi.org/10.1007/978-3-322-89838-8_31
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DOI: https://doi.org/10.1007/978-3-322-89838-8_31
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