Energy transfer in reconnection and turbulence
| Author(s) | Adhikari, S. | |
| Author(s) | Parashar, T. N. | |
| Author(s) | Shay, M. A. | |
| Author(s) | Matthaeus, W. H. | |
| Author(s) | Pyakurel, P. S. | |
| Author(s) | Fordin, S. | |
| Author(s) | Stawarz, J. E. | |
| Author(s) | Eastwood, J. P. | |
| Date Accessioned | 2022-03-07T20:26:37Z | |
| Date Available | 2022-03-07T20:26:37Z | |
| Publication Date | 2021-12-21 | |
| Description | This article was originally published in Physical Review E. The version of record is available at: https://doi.org/10.1103/PhysRevE.104.065206 | en_US |
| Abstract | Reconnection and turbulence are two of the most commonly observed dynamical processes in plasmas, but their relationship is still not fully understood. Using 2.5D kinetic particle-in-cell simulations of both strong turbulence and reconnection, we compare the cross-scale transfer of energy in the two systems by analyzing the generalization of the von Kármán Howarth equations for Hall magnetohydrodynamics, a formulation that subsumes the third-order law for steady energy transfer rates. Even though the large scale features are quite different, the finding is that the decomposition of the energy transfer is structurally very similar in the two cases. In the reconnection case, the time evolution of the energy transfer also exhibits a correlation with the reconnection rate. These results provide explicit evidence that reconnection dynamics fundamentally involves turbulence-like energy transfer. | en_US |
| Sponsor | We acknowledge the high-performance computing support from Cheyenne [66] provided by NCAR's Computational and Information Systems Laboratory, sponsored by the NSF. This research also used NERSC resources, a U.S. DOE Office of Science User Facility operated under Contract No. DE-AC02-05CH11231. S.A., M.A.S., and S.F. acknowledge support from NASA Grants No. NNX17AI25G, No. 80NSSC19K1470, No. 80NSSC20K0198, and NSF Grant No. AGS-2024198. W.H.M. is supported in part by a MMS Theory and Modeling team grant under NASA Grant No. NNX14AC39, and by NASA Heliophysics SRT Grants No. NNX17AB79G, No. NNX17AI25G, and No. 80NSSC18K1648. J.E.S. is supported by Royal Society University Research Fellowship No. URF\R1\201286. J.P.E. is supported by UKRI/STFC Grant No. ST/S000364/1. | en_US |
| Citation | Adhikari, S., T. N. Parashar, M. A. Shay, W. H. Matthaeus, P. S. Pyakurel, S. Fordin, J. E. Stawarz, and J. P. Eastwood. “Energy Transfer in Reconnection and Turbulence.” Physical Review E 104, no. 6 (December 21, 2021): 065206. https://doi.org/10.1103/PhysRevE.104.065206. | en_US |
| ISSN | 2470-0053 | |
| URL | https://udspace.udel.edu/handle/19716/30625 | |
| Language | en_US | en_US |
| Publisher | Physical Review E | en_US |
| Title | Energy transfer in reconnection and turbulence | en_US |
| Type | Article | en_US |
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