Three dimensional free-decaying MHD turbulence is simulated by lattice Boltzmann methods on a spatial grid of 80003 for low and high magnetic Prandtl number.It is verified that∇·B=0 is automatically maintained to...Three dimensional free-decaying MHD turbulence is simulated by lattice Boltzmann methods on a spatial grid of 80003 for low and high magnetic Prandtl number.It is verified that∇·B=0 is automatically maintained to machine accuracy throughout the simulation.Isosurfaces of vorticity and current show the persistence of many large scale structures(both magnetic and velocity)for long times—unlike the velocity isosurfaces of Navier-Stokes turbulence.展开更多
基金The authors were supported by grants from DoE,AFOSR and AFRL as well as the Director,Office of Science,Office of Advanced Scientific Computing Research,Department of Energy under Contract No.DE-AC02-05CH11231.
文摘Three dimensional free-decaying MHD turbulence is simulated by lattice Boltzmann methods on a spatial grid of 80003 for low and high magnetic Prandtl number.It is verified that∇·B=0 is automatically maintained to machine accuracy throughout the simulation.Isosurfaces of vorticity and current show the persistence of many large scale structures(both magnetic and velocity)for long times—unlike the velocity isosurfaces of Navier-Stokes turbulence.
