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arXiv · 1410.2987

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

W. D. McComb·M. F. Linkmann·A. Berera·S. R. Yoffe·B. Jankauskas
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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-organized 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).

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W. D. McComb, M. F. Linkmann, A. Berera, S. R. Yoffe, B. Jankauskas. 2014-10-11. Self-organization and transition to turbulence in isotropic fluid motion driven by negative damping at low wavenumbers. https://doi.org/10.1088/1751-8113/48/25/25ft01

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