A New Large Scale Instability in Rotating Stratified Fluids Driven by Small Scale Forces - Open Journal of Fluid Dynamics

OJFD > Vol.3 No.4, December 2013

A New Large Scale Instability in Rotating Stratified Fluids Driven by Small Scale Forces ()

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Download as PDF (Size: 237KB) PP. 340-351

DOI: 10.4236/ojfd.2013.34041 3,692 Downloads 5,669 Views Citations

Author(s)

Anatoly Tur, Malik Chabane, Vladimir Yanovsky

Affiliation(s)

Institute for Single Crystals, National Academy of Science Ukraine, Kharkov, Ukraine.
Université de Toulouse [UPS], Centre National de la Recherche Scientifique, Institut de Recherche en Astrophysique et Planétologie, Toulouse, France.

ABSTRACT

In this paper, we find a new large scale instability displayed by a stratified rotating flow in forced turbulence. The turbulence is generated by a small scale external force at low Reynolds number. The theory is built on the rigorous asymptotic method of multi-scale development. There is no other special constraint concerning the force. In previous papers, the force was either helical or violating parity invariance. The nonlinear equations for the instability are obtained at the third order of the perturbation theory. In this article, we explain a detailed study of the linear stage of the instability.

KEYWORDS

Large Scale Vortex Instability; Coriolis Forse; Buoyancy; Multi-Scale Development; Small Scale Turbulence

Share and Cite:

A. Tur, M. Chabane and V. Yanovsky, "A New Large Scale Instability in Rotating Stratified Fluids Driven by Small Scale Forces," Open Journal of Fluid Dynamics, Vol. 3 No. 4, 2013, pp. 340-351. doi: 10.4236/ojfd.2013.34041.

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