Fast dynamo action in spherical geometry: Numerical calculations using parallel virtual machines
نویسندگان
چکیده
منابع مشابه
Numerical simulations of kinematic dynamo action
Numerical simulations of kinematic dynamo action in steady and three-dimensional ABC flows are presented with special focus on the difference in growth rates between cases with single and multiple periods of the prescribed velocity field. It is found that the difference in growth rate (apart from a trivial factor stemming from a scaling of the rate of strain with the wavenumber of the velocity ...
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Hydrodynamic and magnetohydrodynamic numerical studies of a mechanically forced two-vortex flow inside a sphere are reported. The simulations are performed in the intermediate regime between the laminar flow and developed turbulence, where a hydrodynamic instability is found to generate internal waves with a characteristic m=2 zonal wave number. It is shown that this time-periodic flow acts as ...
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1 Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, UK 2 Plasma Physics Group, Blackett Laboratory, Imperial College, London SW7 2AZ, UK 3 Laboratoire d’Astrophysique de Toulouse-Tarbes, Université de Toulouse, CNRS, 14 avenue Edouard Belin, F-31400 Toulouse, France 4 Department of Mechanical Engineering, The Ben-Gurion University of the Nege...
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We present a three-pronged numerical approach to the dynamo problem at low magnetic Prandtl numbers P(M). The difficulty of resolving a large range of scales is circumvented by combining direct numerical simulations, a Lagrangian-averaged model and large-eddy simulations. The flow is generated by the Taylor-Green forcing; it combines a well defined structure at large scales and turbulent fluctu...
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ژورنال
عنوان ژورنال: Computers in Physics
سال: 1995
ISSN: 0894-1866
DOI: 10.1063/1.168547