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Statistics of active versus passive advections in magnetohydrodynamic turbulence

Gilbert, Thomas and Mitra, Dhrubaditya (2004) Statistics of active versus passive advections in magnetohydrodynamic turbulence. In: Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), 69 (5). pp. 57301-1.

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Abstract

Active turbulent advection is considered in the context of magnetohydrodynamics. In this case, an auxiliary passive field bears no apparent connection to the active field. The scaling properties of the two fields are different. In the framework of a shell model, we show that the two-point structure function of the passive field has a unique zero mode, characterizing the scaling of this field only. In other words, the existence of statistical invariants for the decaying passive field carries no information on the scaling properties of the active field.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to American Physical Society (APS).
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 10 Dec 2004
Last Modified: 19 Sep 2010 04:13
URI: http://eprints.iisc.ernet.in/id/eprint/458

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