Dynamo transition in low-dimensional models

dc.contributor.author	Verma, Mahendra K.	en
dc.contributor.author	Lessinnes, Thomas	en
dc.contributor.author	Carati, Daniele	it
dc.contributor.author	Σαρρής, Ιωάννης Ε.	el
dc.contributor.author	Kumar, Krishna	en
dc.date.accessioned	2015-05-07T18:21:48Z
dc.date.issued	2015-05-07
dc.identifier.uri	http://hdl.handle.net/11400/9884
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://journals.aps.org/	en
dc.subject	Magnetohydrodynamics
dc.subject	Helicity
dc.subject	Velocity
dc.subject	Prandtl number
dc.subject	Αριθμός Prandtl
dc.subject	Ταχύτητα
dc.subject	Μαγνητοϋδροδυναμική
dc.subject	Ελικότητα
dc.title	Dynamo transition in low-dimensional models	en
heal.type	journalArticle
heal.classification	Technology
heal.classification	Engineering
heal.classification	Τεχνολογία
heal.classification	Μηχανική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85133147
heal.classificationURI	http://zbw.eu/stw/descriptor/19795-3
heal.classificationURI	N/A-Τεχνολογία
heal.classificationURI	N/A-Μηχανική
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85079784
heal.contributorName	Singh, Meenakshi	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevE.78.036409
heal.dateAvailable	10000-01-01
heal.language	en
heal.access	forever
heal.publicationDate	2008-09
heal.bibliographicCitation	VERMA, M.K., LESSINNES, T., CARATI, D., SARRIS, I.E., KUMAR, K., et al. (2008). Dynamo transition in low-dimensional models . Physical Review E. [Online] 78 (3). p.036409. Available from: http://journals.aps.org/	en
heal.abstract	Two low-dimensional magnetohydrodynamic models containing three velocity and three magnetic modes are described. One of them (nonhelical model) has zero kinetic and current helicity, while the other model (helical) has nonzero kinetic and current helicity. The velocity modes are forced in both these models. These low-dimensional models exhibit a dynamo transition at a critical forcing amplitude that depends on the Prandtl number. In the nonhelical model, dynamo exists only for magnetic Prandtl number beyond 1, while the helical model exhibits dynamo for all magnetic Prandtl number. Although the model is far from reproducing all the possible features of dynamo mechanisms, its simplicity allows a very detailed study and the observed dynamo transition is shown to bear similarities with recent numerical and experimental results.	en
heal.publisher	American Physical Society	en
heal.journalName	Physical Review E	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	false