210 citations · 358 across the 10 of their papers we have counts for
10 papers
Reynolds number dependence of Lagrangian dispersion in direct numerical simulations of anisotropic magnetohydrodynamic turbulence
J. Pratt, A. Busse, W. -C. Müller
Large-scale magnetic fields thread through the electrically conducting matter of the interplanetary and interstellar medium, stellar interiors, and other astrophysical plasmas, pro…
Global scaling of the heat transport in fusion plasmas
Sara Moradi, Johan Anderson, Michele Romanelli +2
A global heat flux model based on a fractional derivative of plasma pressure is proposed for the heat transport in fusion plasmas. The degree of the fractional derivative of the he…
Extreme-value statistics from Lagrangian convex hull analysis for homogeneous turbulent Boussinesq convection and MHD convection
J. Pratt, A. Busse, W. -C. Müller +2
We investigate the utility of the convex hull of many Lagrangian tracers to analyze transport properties of turbulent flows with different anisotropy. In direct numerical simulatio…
Anomalous dispersion of Lagrangian particles in local regions of turbulent flows revealed by convex hull analysis
J. Pratt, A. Busse, W. -C. Mueller +2
Local regions of anomalous particle dispersion, and intermittent events that occur in turbulent flows can greatly influence the global statistical description of the flow. These lo…
Fluctuation dynamo amplified by intermittent shear bursts in convectively driven magnetohydrodynamic turbulence
J. Pratt, A. Busse, W. -C. Mueller
Intermittent large-scale high-shear flows are found to occur frequently and spontaneously in direct numerical simulations of statistically stationary turbulent Boussinesq magnetohy…
The inverse cascade of magnetic helicity in magnetohydrodynamic turbulence
Wolf-Christian Müller, Shiva Kumar Malapaka, Angela Busse
The nonlinear dynamics of magnetic helicity, , which is responsible for large-scale magnetic structure formation in electrically conducting turbulent media is investigated in…
The Lagrangian frequency spectrum as a diagnostic for magnetohydrodynamic turbulence dynamics
Angela Busse, Wolf-Christian Müller, Grigol Gogoberidze
For the phenomenological description of magnetohydrodynamic turbulence competing models exist, e.g. Boldyrev [Phys.Rev.Lett. \textbf{96}, 115002, 2006] and Gogoberidze [Phys.Plas.…
Universal intermittent properties of particle trajectories in highly turbulent flows
ICTR, :, A. Arneodo +27
We present a collection of eight data sets, from state-of-the-art experiments and numerical simulations on turbulent velocity statistics along particle trajectories obtained in dif…
Diffusion and dispersion of passive tracers: Navier-Stokes versus MHD turbulence
Wolf-Christian Müller, Angela Busse
A comparison of turbulent diffusion and pair-dispersion in homogeneous, macroscopically isotropic Navier-Stokes (NS) and nonhelical magnetohydrodynamic (MHD) turbulence based on hi…
Lagrangian Statistics of Navier-Stokes- and MHD-Turbulence
H. Homann, R. Grauer, A. Busse +1
We report on a comparison of high-resolution numerical simulations of Lagrangian particles advected by incompressible turbulent hydro- and magnetohydrodynamic (MHD) flows. Numerica…