Active vs passive scalar turbulence
混沌动力学
2009-11-07 v2 统计力学
摘要
Active and passive scalars transported by an incompressible two-dimensional conductive fluid are investigated. It is shown that a passive scalar displays a direct cascade towards the small scales while the active magnetic potential builds up large-scale structures in an inverse cascade process. Correlations between scalar input and particle trajectories are found to be responsible for those dramatic differences as well as for the behavior of dissipative anomalies.
引用
@article{arxiv.nlin/0207003,
title = {Active vs passive scalar turbulence},
author = {A. Celani and M. Cencini and A. Mazzino and M. Vergassola},
journal= {arXiv preprint arXiv:nlin/0207003},
year = {2009}
}
备注
Revised version, Phys. Rev. Lett., in press