In a 10,080^3 simulation of compressible magnetized turbulence, the velocity-magnetic alignment angle scales as λ^{1/8} instead of the theoretical λ^{1/4}, while velocity-vorticity alignment scales as λ^{1/16}.
Relaxation of the turbulent magnetosheath
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abstract
In turbulence, nonlinear terms drive energy transfer from large-scale eddies into small scales through the so-called energy cascade. Turbulence often relaxes toward states that minimize energy; typically these states are considered globally. However, turbulence can also relax toward local quasi-equilibrium states, creating patches or cells where the magnitude of nonlinearity is reduced and energy cascade is impaired. We show, for the first time, compelling observational evidence that this ``cellularization'' of turbulence can occur due to local relaxation in a strongly turbulent natural environment such as the Earth's magnetosheath.
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Local relaxation and scale-dependent alignment in compressible, magnetized turbulence
In a 10,080^3 simulation of compressible magnetized turbulence, the velocity-magnetic alignment angle scales as λ^{1/8} instead of the theoretical λ^{1/4}, while velocity-vorticity alignment scales as λ^{1/16}.