Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jkas...37..557c&link_type=abstract
Journal of the Korean Astronomical Society, vol. 37, no. 5, pp. 557-562
Astronomy and Astrophysics
Astronomy
10
Clusters Of Galaxies, Ism: General, Mhd, Turbulence
Scientific paper
We discuss diffusion of particles in turbulent flows. In hydrodynamic turbulence, it is well known that distance between two particles imbedded in a turbulent flow exhibits a random walk behavior. The corresponding diffusion coefficient is ˜ vinj lturb, where vinj is the amplitude of the turbulent velocity and lturb is the scale of the turbulent motions. It is not clear whether or not we can use a similar expression for magnetohydrodynamic turbulence. However, numerical simulations show that mixing motions perpendicular to the local magnetic field are, up to high degree, hydrodynamical. This suggests that turbulent heat transport in magnetized turbulent fluid should be similar to that in non-magnetized one, which should have a diffusion coefficient ˜ vinj lturb. We review numerical simulations that support this conclusion. The application of this idea to thermal conductivity in clusters of galaxies shows that this mechanism may dominate the diffusion of heat and may be efficient enough to prevent cooling flow formation when turbulence is vigorous.
Cho Jungyeon
Lazarian Alex
No associations
LandOfFree
Thermal Conduction in Magnetized Turbulent Gas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermal Conduction in Magnetized Turbulent Gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal Conduction in Magnetized Turbulent Gas will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1086452