D. Biskamp and E. Schwarz 1997 Europhys. Lett. 40 637 doi:10.1209/epl/i1997-00516-1
D. Biskamp and E. Schwarz
Show affiliationsThe statistical properties of turbulent convection are studied numerically in a 2D periodic system relevant for a strongly magnetized plasma. Both cases of unstable and stable stratification are considered. In spite of the anisotropic driving, the spectra are almost perfectly isotropic. In the unstable case the density fluctuation spectrum is EkN ~ k−1.2, flatter than the Bolgiano spectrum ~ k−1.4, and the structure functions exhibit strong intermittency, the relative scaling exponents being similar to those of a passive scalar. In the stable case the spectrum is closer to the Bolgiano spectrum and intermittency is much weaker.
Issue 6 (15 December 1997)
Received 21 July 1997, accepted for publication 24 October 1997, in final form 24 October 1997
D. Biskamp and E. Schwarz 1997 Europhys. Lett. 40 637
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