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

McComb, W D and Linkmann, M F and Berera, A and Yoffe, S R and Jankauskas, B (2015) Self-organization and transition to turbulence in isotropic fluid motion driven by negative damping at low wavenumbers. Journal of Physics A: Mathematical and Theoretical, 48 (25). 25FT01. ISSN 1751-8113 (https://doi.org/10.1088/1751-8113/48/25/25FT01)

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Abstract

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).

  • Item type:Article
    ID code:53336
    Dates:
    Date
    Event
    26 June 2015
    Published
    5 June 2015
    Published Online
    15 May 2015
    Accepted
    Notes:Data available online: http://dx.doi.org/10.7488/ds/250
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:10 Jun 2015 14:30
    Last modified:14 Apr 2024 00:31
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/53336
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