DNS of structural vacillation in the transition to geostrophic turbulence

W.-G. Fruh, P. Maubert, P. L. Read, A. Randriamampianina

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Abstract

The onset of small-scale fluctuations around a steady convection pattern in a rotating baroclinic annulus filled with air is investigated using Direct Numerical Simulations (DNS). In previous laboratory experiments of baroclinic waves, such fluctuations have been associated with Structural Vacillation which is regarded as the first step in the transition to fully-developed geostrophic turbulence. Here we present an analysis which focusses on the small-scale features.

Original languageEnglish
Title of host publicationADVANCES IN TURBULENCE XI
EditorsJMLM Palma, AS Lopes
Place of PublicationBERLIN
PublisherSpringer
Pages432-434
Number of pages3
ISBN (Print)978-3-540-72603-6
Publication statusPublished - 2007
Event11th EUROMECH European Turbulence Conference - Oporto
Duration: 25 Jun 200728 Jun 2007

Conference

Conference11th EUROMECH European Turbulence Conference
CityOporto
Period25/06/0728/06/07

Cite this

Fruh, W-G., Maubert, P., Read, P. L., & Randriamampianina, A. (2007). DNS of structural vacillation in the transition to geostrophic turbulence. In JMLM. Palma, & AS. Lopes (Eds.), ADVANCES IN TURBULENCE XI (pp. 432-434). Springer.