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Chandrasekhar-Kendall functions in astrophysical dynamos
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för astronomi. Stockholms universitet, Nordiska institutet för teoretisk fysik (Nordita).ORCID-id: 0000-0002-7304-021X
2011 (engelsk)Inngår i: Pramana (Bangalore), ISSN 0304-4289, E-ISSN 0973-7111, Vol. 77, nr 1, s. 67-76Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2011. Vol. 77, nr 1, s. 67-76
Emneord [en]
Magnetohydrodynamics, dynamos, turbulence
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-66962ISI: 000293145400007OAI: oai:DiVA.org:su-66962DiVA, id: diva2:470252
Merknad
authorCount :1Tilgjengelig fra: 2011-12-28 Laget: 2011-12-22 Sist oppdatert: 2022-03-09bibliografisk kontrollert

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

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Brandenburg, Axel

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