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dc.contributor.authorKumar, Rohit
dc.contributor.authorVerma, Mahendra K.
dc.contributor.authorSamtaney, Ravi
dc.date.accessioned2016-01-19T14:45:14Z
dc.date.available2016-01-19T14:45:14Z
dc.date.issued2015-06-25
dc.identifier.citationKumar R, Verma MK, Samtaney R (2015) Energy transfers in dynamos with small magnetic Prandtl numbers. Journal of Turbulence 16: 1114–1134. Available: http://dx.doi.org/10.1080/14685248.2015.1057340.
dc.identifier.issn1468-5248
dc.identifier.doi10.1080/14685248.2015.1057340
dc.identifier.urihttp://hdl.handle.net/10754/594286
dc.description.abstractWe perform numerical simulation of dynamo with magnetic Prandtl number Pm = 0.2 on 10243 grid, and compute the energy fluxes and the shell-to-shell energy transfers. These computations indicate that the magnetic energy growth takes place mainly due to the energy transfers from large-scale velocity field to large-scale magnetic field and that the magnetic energy flux is forward. The steady-state magnetic energy is much smaller than the kinetic energy, rather than equipartition; this is because the magnetic Reynolds number is near the dynamo transition regime. We also contrast our results with those for dynamo with Pm = 20 and decaying dynamo. © 2015 Taylor & Francis.
dc.description.sponsorshipScience and Engineering Research Board[SERB/F/3279/2013-14]
dc.publisherInforma UK Limited
dc.subjectdirect numerical simulation
dc.subjectdynamo
dc.subjectenergy transfers
dc.subjectmagnetic field generation
dc.subjectmagnetohydrodynamic turbulence
dc.titleEnergy transfers in dynamos with small magnetic Prandtl numbers
dc.typeArticle
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalJournal of Turbulence
dc.contributor.institutionDepartment of Physics, Indian Institute of Technology, Kanpur, India
kaust.personSamtaney, Ravi


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