Self-organization and transition to turbulence in isotropic fluid motion driven by negative damping at low wavenumbers

McComb, W David; Linkmann, Moritz F; Berera, Arjun; Yoffe, Samuel R; Jankauskas, Bernardas

Date Available

2015-05-27

Type

dataset

Data Creator

McComb, W David
Linkmann, Moritz F
Berera, Arjun
Yoffe, Samuel R
Jankauskas, Bernardas

Publisher

University of Edinburgh. School of Physics and Astronomy

Relation (Is Referenced By)

http://www.research.ed.ac.uk/portal/en/publications/nonuniversality-and-finite-dissipation-in-decaying-magnetohydrodynamic-turbulence(77030e23-f105-4c21-aa30-dbf56f8d5e4c).html

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Citation

McComb, W. David; Linkmann, Moritz F.; Berera, Arjun; Yoffe, Samuel R.; Jankauskas, Bernardas. (2015). Self-organization and transition to turbulence in isotropic fluid motion driven by negative damping at low wavenumbers, [dataset]. University of Edinburgh. School of Physics and Astronomy. https://doi.org/10.7488/ds/250.

Description

We observe a symmetry-breaking transition from a turbulent to a self-organized state in direct numerical simulation of the Navier-Stokes equation at very low Reynolds number. In this self-organised state the kinetic energy is contained only in modes at the lowest resolved wavenumber, the skewness vanishes, and visualization of the flows shows a lack of small-scale structure, with the vorticity and velocity vectors becoming aligned (a Beltrami flow).