http://arxiv.org/abs/2209.14143
We calculate the energetics of compressible and sub-Alfv\’enic turbulence based on the dynamics of coherent cylindrical fluid parcels. We show that parallel and perpendicular magnetic fluctuations are generalized coordinates of the local perturbed Lagrangian of a magnetized fluid, and prove analytically that the bulk of the magnetic energy transferred to kinetic is the energy stored in the coupling between the initial and fluctuating magnetic field, $\vec{B}_{0} \cdot \delta \vec{B}/4\pi$. The analytical relations are consistent with numerical data up to second order terms.
R. Skalidis, K. Tassis and V. Pavlidou
Thu, 29 Sep 22
69/70
Comments: 13 pages, 1 figure, submitted, comments welcome