Transition to Temporal Chaos in anO(2)-Symmetric Convective System for Low Prandtl Numbers
نویسندگان
چکیده
منابع مشابه
Novel Convective Instabilities of Low- to Moderate-prandtl Number Fluids
LOWTO MODERATE-PRANDTL NUMBER FLUIDS Guy Metcalfe Division of Building, Construction and Engineering CSIRO Highett, Victoria AUSTRALIA R.P. Behringer Dept. of Physics and Center for Nonlinear and Complex Systems Duke University Durham, North Carolina USA to be given at the 12th Australasian Fluid Mechanics Conference, Sydney Australia December 10{15 1995 ABSTRACT Super uid mixtures have Prandtl...
متن کاملdynamo at low magnetic Prandtl numbers
We investigate the dynamo problem in the limit of small magnetic Prandtl number (Pm) using a shell model of magnetohydrodynamic turbulence. The model is designed to satisfy conservation laws of total energy, cross helicity and magnetic helicity in the limit of inviscid fluid and null magnetic diffusivity. The forcing is chosen to have a constant injection rate of energy and no injection of kine...
متن کاملDissipation in dynamos at low and high magnetic Prandtl numbers
Using simulations of helically driven turbulence, it is shown that the ratio of kinetic to magnetic energy dissipation scales with the magnetic Prandtl number in power law fashion with an exponent of approximately 0.6. Over six orders of magnitude in the magnetic Prandtl number the magnetic field is found to be sustained by large-scale dynamo action of alphasquared type. This work extends a sim...
متن کاملFluctuation dynamo and turbulent induction at low magnetic Prandtl numbers
This paper is a detailed report on a programme of direct numerical simulations of incompressible nonhelical randomly forced MHD turbulence that are used to settle a long-standing issue in the turbulent dynamo theory and demonstrate that the fluctuation dynamo exists in the limit of large magnetic Reynolds number Rm ≫ 1 and small magnetic Prandtl number Pm ≪ 1. The dependence of the critical Rmc...
متن کاملMagnetic dynamo action at low magnetic Prandtl numbers.
Amplification of magnetic field due to kinematic turbulent dynamo action is studied in the regime of small magnetic Prandtl numbers. Such a regime is relevant for planets and stars interiors, as well as for liquid-metal laboratory experiments. A comprehensive analysis based on the Kazantsev-Kraichnan model is reported, which establishes the dynamo threshold and the dynamo growth rates for varyi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2000
ISSN: 0375-9687
DOI: 10.1143/ptps.139.315