Pair dispersion in turbulence
混沌动力学
2009-11-07 v1
摘要
We study the statistics of pair dispersion in two-dimensional turbulence. Direct numerical simulations show that the pdf of pair separations is in agreement with the Richardson prediction. The pdf of doubling times follows dimensional scaling and shows a long tail which is the signature of close approaches between particles initially seeded with a large separation. This phenomenon is related to the formation of fronts in passive scalar advection.
引用
@article{arxiv.nlin/0102023,
title = {Pair dispersion in turbulence},
author = {G. Boffetta and A. Celani},
journal= {arXiv preprint arXiv:nlin/0102023},
year = {2009}
}
备注
11 pages, 5 figures