The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 42 Issue 1
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- Pages.55.2-55.2
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- 2017
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- 1226-2692(pISSN)
Density-Magnetic Field correlation in MHD turbulence driven by forcing with different correlation time
- Yoon, Heesun (Department of Astronomy and Space Science, Chungnam National University) ;
- Cho, Jungyeon (Department of Astronomy and Space Science, Chungnam National University) ;
- Kim, Jongsoo (Korea Astronomy and Space Science Institute (KASI))
- Published : 2017.04.10
Abstract
We study the effect of driving scheme on the density-magnetic field correlation. We numerically investigate how the correlation time of driving affects the correlation between density and magnetic field. We performed MHD turbulence simulation using two different driving schemes - a finite-correlated driving and a delta-correlated driving. In the former, the forcing vectors change continuously with a correlation time comparable to the large-eddy turnover time. In the latter, the direction and amplitude of driving changes in a very short time scale.
Keywords