NDLI: Direct numerical simulation of homogeneous stratified rotating turbulence

Content Provider	Springer Nature Link
Author	Iida, O. Tsujimura, S. Naga, Y.
Copyright Year	2005
Abstract	The effects of the Prandtl number on stratified rotating turbulence have been studied in homogeneous turbulence by using direct numerical simulations and a rapid distortion theory. Fluctuations under strong stable-density stratification can be theoretically divided into the WAVE and the potential vorticity (PV) modes. In low-Prandtl-number fluids, the WAVE mode deteriorates, while the PV mode remains. Imposing rotation on a low-Prandtl-number fluid makes turbulence two-dimensional as well as geostrophic; it is found from the instantaneous turbulent structure that the vortices merge to form a few vertically-elongated vortex columns. During the period toward two-dimensionalization, the vertical vortices become asymmetric in the sense of rotation.
Starting Page	441
Ending Page	460
Page Count	20
File Format	PDF
ISSN	09354964
Journal	Theoretical and Computational Fluid Dynamics
Volume Number	19
Issue Number	6
e-ISSN	14322250
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-10-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Homogeneous turbulence Stable stratification Rotation Thermodynamics Computational Science and Engineering Engineering Fluid Dynamics Mathematical and Computational Physics Fluids
Content Type	Text
Resource Type	Article
Subject	Fluid Flow and Transfer Processes Condensed Matter Physics Computational Mechanics

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Direct numerical simulation of homogeneous stratified rotating turbulence