Journal ArticleDOI
Two-dimensional asymmetric vortex merger: merger dynamics and critical merger distance
Ichiro Yasuda,Glenn R. Flierl +1 more
TLDR
In this paper, a two-dimensional asymmetric merger of two like-signed vorticity monopoles with different sizes and vorticities is examined by combining simplified analytical models and contour dynamics experiments, and the model results can capture the key dynamics and hence allow the prediction of the critical merger distance in a number of the situations.About:
This article is published in Dynamics of Atmospheres and Oceans.The article was published on 1997-10-01. It has received 43 citations till now. The article focuses on the topics: Vortex ring & Vortex.read more
Citations
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Journal ArticleDOI
Hydrographic Structure and Variability in the Kuroshio-Oyashio Transition Area
TL;DR: The hydrographic structure and variability in the Kuroshio-Oyashio Transition Area of the northwestern Pacific are briefly reviewed, focusing on the circulation, frontal structure and water mass formation from surface to intermediate depths as discussed by the authors.
Journal ArticleDOI
Hydrodynamical Modeling Of Oceanic Vortices
TL;DR: In this article, the authors describe a few mechanisms of vortex generation, such as the pairing, merger or vertical alignment of two vortices, which depend on their relative polarities and depths.
Book ChapterDOI
The Introductory Chapter
TL;DR: In this paper, the authors give a mathematical introduction to Geophysical Fluid Dynamics and give the description of main vortex structures that have become objects of the present book: (a) Heton, a two-layer vortex with opposite rotations in different layers, and (b) Intrathermocline lens, which is studied in this work as a vortex patch in the intermediate layer of a three-layer ocean model.
Journal ArticleDOI
Large-scale vortices in rapidly rotating Rayleigh-Bénard convection
TL;DR: In this paper, the formation of large-scale vortices (LSV) was studied in a Cartesian box with Boussinesq convection, where the rotation rate, the thermal driving, and the aspect ratio were varied to determine the domain of existence of these largescale Vortices.
Journal ArticleDOI
Large-scale vortices in rapidly rotating Rayleigh-B\'enard convection
TL;DR: In this paper, the formation of large-scale vortices (LSV) was studied in a Cartesian box with Boussinesq convection, where the rotation rate, the thermal driving, and the aspect ratio were varied to determine the domain of existence of these largescale Vortices.
References
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Journal ArticleDOI
On density effects and large structure in turbulent mixing layers
Garry L. Brown,Anatol Roshko +1 more
TL;DR: In this article, Spark shadow pictures and measurements of density fluctuations suggest that turbulent mixing and entrainment is a process of entanglement on the scale of the large structures; some statistical properties of the latter are used to obtain an estimate of entrainedment rates, and large changes of the density ratio across the mixing layer were found to have a relatively small effect on the spreading angle.
Journal ArticleDOI
Vortex pairing : the mechanism of turbulent mixing-layer growth at moderate Reynolds number
C. D. Winant,F. K. Browand +1 more
TL;DR: A mixing layer is formed by bringing two streams of water, moving at different velocities, together in a lucite-walled channel as mentioned in this paper, where dye is injected between the two streams just before they are brought together, marking the vorticitycarrying fluid.
Journal ArticleDOI
The emergence of isolated coherent vortices in turbulent flow
TL;DR: In this article, a study of two-dimensional and geostrophic turbulent flows is presented, showing that the flow structure has vorticity concentrated in a small fraction of the spatial domain, and these concentrations typically have lifetimes long compared with the characteristic time for nonlinear interactions in turbulent flow (i.e. an eddy turnaround time).
Journal ArticleDOI
Two-dimensional turbulence
Robert H. Kraichnan,D Montgomery +1 more
TL;DR: The theory of two-dimensional turbulence is reviewed and unified, and some hydrodynamic and plasma applications are considered in this paper, where some equations of incompressible hydrodynamics, absolute statistical equilibrium, spectral transport of energy and enstrophy, turbulence on the surface of a rotating sphere, turbulent diffusion, MHD turbulence, and two dimensional superflow are discussed.
Journal ArticleDOI
On transition in a separated laminar boundary layer
TL;DR: In this article, the Strouhal number was used to measure the growth of small disturbances in a separated laminar boundary layer for high Reynolds numbers as a function of the dimensionless flow parameters.