Scale-dependent analysis of angular momentum flux in high-resolution magnetohydrodynamic simulations for solar differential rotation
arXiv:2307.09975 · doi:10.1093/mnras/stad2196
Abstract
In this work, we systematically investigate the scale-dependent angular momentum flux by analysing high-resolution three-dimensional magnetohydrodynamic simulations in which the solar-like differential rotation is reproduced without using any manipulations. More specifically, the magnetic angular momentum transport (AMT) plays a dominant role in the calculations. We examine the important spatial scales for the magnetic AMT. The main conclusions of our approach can be summarized as follows: 1. Turbulence transports the angular momentum radially inward. This effect is more pronounced in the highest resolution calculation. 2. The dominant scale for the magnetic AMT is the smallest spatial scale. 3. The dimensionless magnetic correlation is low in the high-resolution simulation. Thus, chaotic but strong small-scale magnetic fields achieve efficient magnetic AMT.
References in corpus (11)
- The "Yin-Yang Grid": An Overset Grid in Spherical Geometry
- From solar-like to anti-solar differential rotation in cool stars
- Magnetically controlled stellar differential rotation near the transition from solar to anti-solar profiles
- High-resolution calculation of the solar global convection with the reduced speed of sound technique: II. Near surface shear layer with the rotation
- Numerical Calculation of Convection with Reduced Speed of Sound Technique
- Solar differential rotation reproduced with high-resolution simulation
- Velocity Amplitudes in Global Convection Simulations: The Role of the Prandtl Number and Near-Surface Driving
- Generation solar-like differential rotation
- On rising magnetic flux tube and formation of sunspots in a deep domain
- Transition from anti-solar to solar-like differential rotation: Dependence on Prandtl number
- Investigation of the dependence of angular momentum transport on spatial scales for construction of differential rotation