Sustained Turbulence in Differentially Rotating Magnetized Fluids at Low Magnetic Prandtl Number
arXiv:1609.08543 · doi:10.3847/1538-4357/833/2/187
Abstract
We show for the first time that sustained turbulence is possible at low magnetic Prandtl number for Keplerian flows with no mean magnetic flux. Our results indicate that increasing the vertical domain size is equivalent to increasing the dynamical range between the energy injection scale and the dissipative scale. This has important implications for a large variety of differentially rotating systems with low magnetic Prandtl number such as protostellar disks and laboratory experiments.
5 pages, 6 figures, submitted to ApJ, changes made in response to referee report
References in corpus (8)
- MHD simulations of the magnetorotational instability in a shearing box with zero net flux. II. The effect of transport coefficients
- Impact of dimensionless numbers on the efficiency of MRI-induced turbulent transport
- Experimental observation and characterization of the magnetorotational instability
- Angular Momentum Transport in Accretion Disks: Scaling Laws in MRI-driven Turbulence
- Numerical demonstration of fluctuation dynamo at low magnetic Prandtl numbers
- On self-sustaining processes in Rayleigh-stable rotating plane Couette flows and subcritical transition to turbulence in accretion disks
- Angular momentum transport and large eddy simulations in magnetorotational turbulence: the small Pm limit
- Dissipative effects on the sustainment of a magnetorotational dynamo in Keplerian shear flow