Cross helicity sign reversals in the dissipative scales of magnetohydrodynamic turbulence
arXiv:1902.08253 · doi:10.22364/mhd.55.1-2.27
Abstract
We perform direct numerical simulations of magnetohydrodynamic (MHD) turbulence with kinetic energy and cross helicity injections at large scales. We observe that the cross helicity changes sign as we go from large and intermediate scales to small scales. In addition, the magnetic reconnections are strongest at the regions where the cross helicity changes sign and becomes smallest in magnitude. Thus, our simulations provide an important window to explore the regions of magnetic reconnections in nonlinear MHD.
arXiv commentappear in MAGNETOHYDRODYNAMICS
References in corpus (5)
- Scaling of a Fast Fourier Transform and a Pseudo-spectral Fluid Solver up to 196608 cores
- Explosive Turbulent Magnetic Reconnection
- Transport enhancement and suppression in turbulent magnetic reconnection: A self-consistent turbulence model
- Role of Cross Helicity in Cascade Processes of MHD turbulence
- Cross-helically forced and decaying hydromagnetic turbulence