Cross Helicity sign reversals in the dissipative scales of magnetohydrodynamic turbulence
Type
ArticleKAUST Department
Fluid and Plasma Simulation Group (FPS)Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant Number
project K1052Date
2019-05-18Online Publication Date
2019-04Print Publication Date
2019-06Permanent link to this record
http://hdl.handle.net/10754/656369
Metadata
Show full item recordAbstract
Direct numerical simulations of magnetohydrodynamic turbulence with kinetic energy and cross helicity injections at large scales are performed. It was observed that cross helicity changes its sign as we go from large and intermediate scales to small scales. In addition, the magnetic reconnections are strongest in the regions, where the cross helicity changes the sign and becomes smallest in magnitude. Thus, our simulations provide an important opportunity to explore the regions of magnetic reconnections in nonlinear MHD.Citation
Cross helicity sign reversals in the dissipative scales of magnetohydrodynamic turbulence. (2019). Magnetohydrodynamics, 55(1-2), 225–232. doi:10.22364/mhd.55.1-2.27Sponsors
We are grateful to Professor Franck Plunian for his interest in the subject and for useful comments. The developed mathematical model and the performed numerical simulations were supported by the Department of Science and Technology, India (INT/RUS/RSF/P-03) and by the Russian Science Foundation (RSF-16-41-02012) for the Indo-Russian project. Computational resources were provided by Shaheen II of the Supercomputing Laboratory at King Abdullah University of Science and Technology (KAUST) under project K1052. Theoretical studies of magnetic reconnection problems were also supported by the Japan Society for the Promotion of Science (JSPS) Grants-in-Aid for Scientific Research 18H01212. We thank the Scientific Committee of the Third Russian Perm Conference on Magnetohydrodynamics for organizing a warm atmosphere and stimulation discussions.Publisher
University of LatviaJournal
MagnetohydrodynamicsarXiv
1902.08253Additional Links
http://www.mhd.sal.lv/contents/2019/1/MG.55.1.27.R.htmlhttp://arxiv.org/pdf/1902.08253
ae974a485f413a2113503eed53cd6c53
10.22364/mhd.55.1-2.27