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Chandrasekhar-Kendall functions in astrophysical dynamos
Stockholm University, Faculty of Science, Department of Astronomy. Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
2011 (English)In: Pramana (Bangalore), ISSN 0304-4289, E-ISSN 0973-7111, Vol. 77, no 1, p. 67-76Article in journal (Refereed) Published
Abstract [en]

Some of the contributions of Chandrasekhar to the field of magnetohydrodynamics are highlighted. Particular emphasis is placed on the Chandrasekhar-Kendall functions that allow a decomposition of a vector field into right- and left-handed contributions. Magnetic energy spectra of both contributions are shown for a new set of helically forced simulations at resolutions higher than what has been available so far. For a forcing function with positive helicity, these simulations show a forward cascade of the right-handed contributions to the magnetic field and nonlocal inverse transfer for the left-handed contributions. The speed of inverse transfer is shown to decrease with increasing value of the magnetic Reynolds number.

Place, publisher, year, edition, pages
2011. Vol. 77, no 1, p. 67-76
Keyword [en]
Magnetohydrodynamics, dynamos, turbulence
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-66962ISI: 000293145400007OAI: oai:DiVA.org:su-66962DiVA, id: diva2:470252
Note
authorCount :1Available from: 2011-12-28 Created: 2011-12-22 Last updated: 2017-12-08Bibliographically approved

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http://arxiv.org/abs/1103.4976v1

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Brandenburg, Axel
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