Turbulence in Flatland

Onderzoeksoutput: Bijdrage aan congresOtherAcademic

Uittreksel

The earth’s oceans and atmosphere are full of large vortex structures. Their existence is Mainly due to the twodimensional nature of the large-scale geophysical flows. Two-dimensional turbulent flows are characterised by an ‘inverse energy cascade’, as visible in the self-organisation of these flows: larger vortices and structures are observed to emerge from initially random flow fields. Such vortices are weakly dissipative and hence quite persistent. In this lecture I will give an overview of a number of fascinating aspects of this type of turbulent flows. Ample attention will be given to laboratory experiments on forced and decaying quasi-two-dimensional turbulence, interaction between vortices, and vortices in perturbed ambient flow fields. In addition to the dynamical features, some aspects of (chaotic) tracer transport in such flow systems will be highlighted.
Originele taal-2Engels
StatusGepubliceerd - 2009
Evenementconference; Seminar at CICESE; 2009-12-02; 2009-12-02 -
Duur: 2 dec 20092 dec 2009

Congres

Congresconference; Seminar at CICESE; 2009-12-02; 2009-12-02
Periode2/12/092/12/09
AnderSeminar at CICESE

Vingerafdruk

turbulence
vortices
turbulent flow
flow distribution
lectures
tracers
cascades
oceans
atmospheres
interactions
energy

Citeer dit

Heijst, van, G. J. F. (2009). Turbulence in Flatland. conference; Seminar at CICESE; 2009-12-02; 2009-12-02, .
Heijst, van, G.J.F. / Turbulence in Flatland. conference; Seminar at CICESE; 2009-12-02; 2009-12-02, .
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title = "Turbulence in Flatland",
abstract = "The earth’s oceans and atmosphere are full of large vortex structures. Their existence is Mainly due to the twodimensional nature of the large-scale geophysical flows. Two-dimensional turbulent flows are characterised by an ‘inverse energy cascade’, as visible in the self-organisation of these flows: larger vortices and structures are observed to emerge from initially random flow fields. Such vortices are weakly dissipative and hence quite persistent. In this lecture I will give an overview of a number of fascinating aspects of this type of turbulent flows. Ample attention will be given to laboratory experiments on forced and decaying quasi-two-dimensional turbulence, interaction between vortices, and vortices in perturbed ambient flow fields. In addition to the dynamical features, some aspects of (chaotic) tracer transport in such flow systems will be highlighted.",
author = "{Heijst, van}, G.J.F.",
year = "2009",
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Heijst, van, GJF 2009, 'Turbulence in Flatland', conference; Seminar at CICESE; 2009-12-02; 2009-12-02, 2/12/09 - 2/12/09.

Turbulence in Flatland. / Heijst, van, G.J.F.

2009. conference; Seminar at CICESE; 2009-12-02; 2009-12-02, .

Onderzoeksoutput: Bijdrage aan congresOtherAcademic

TY - CONF

T1 - Turbulence in Flatland

AU - Heijst, van, G.J.F.

PY - 2009

Y1 - 2009

N2 - The earth’s oceans and atmosphere are full of large vortex structures. Their existence is Mainly due to the twodimensional nature of the large-scale geophysical flows. Two-dimensional turbulent flows are characterised by an ‘inverse energy cascade’, as visible in the self-organisation of these flows: larger vortices and structures are observed to emerge from initially random flow fields. Such vortices are weakly dissipative and hence quite persistent. In this lecture I will give an overview of a number of fascinating aspects of this type of turbulent flows. Ample attention will be given to laboratory experiments on forced and decaying quasi-two-dimensional turbulence, interaction between vortices, and vortices in perturbed ambient flow fields. In addition to the dynamical features, some aspects of (chaotic) tracer transport in such flow systems will be highlighted.

AB - The earth’s oceans and atmosphere are full of large vortex structures. Their existence is Mainly due to the twodimensional nature of the large-scale geophysical flows. Two-dimensional turbulent flows are characterised by an ‘inverse energy cascade’, as visible in the self-organisation of these flows: larger vortices and structures are observed to emerge from initially random flow fields. Such vortices are weakly dissipative and hence quite persistent. In this lecture I will give an overview of a number of fascinating aspects of this type of turbulent flows. Ample attention will be given to laboratory experiments on forced and decaying quasi-two-dimensional turbulence, interaction between vortices, and vortices in perturbed ambient flow fields. In addition to the dynamical features, some aspects of (chaotic) tracer transport in such flow systems will be highlighted.

M3 - Other

ER -

Heijst, van GJF. Turbulence in Flatland. 2009. conference; Seminar at CICESE; 2009-12-02; 2009-12-02, .