Home
For authors
Submission status

Current
Archive (English)
Archive
   Volumes 61-80
   Volumes 41-60
   Volumes 21-40
   Volumes 1-20
   Volumes 81-92
      Volume 92
      Volume 91
      Volume 90
      Volume 89
      Volume 88
      Volume 87
      Volume 86
      Volume 85
      Volume 84
      Volume 83
      Volume 82
      Volume 81
Search
VOLUME 87 | ISSUE 12 | PAGE 782
Passive scalar structures in peripheral regions of random flows
A. Chernykh+*, V. Lebedev^\nabla

+Institute of Automation and Electrometry SB RAS, 630090 Novosibirsk, Russia
*Novosibirsk State University, 630090 Novosibirsk, Russia
^\nabla Landau Institute for Theoretical Physics RAS, 117334 Moscow, Russia


PACS: 05.10.-a, 05.20.-y, 05.40.-a, 47.27.-i
Abstract
We investigate statistical properties of the passive scalar near walls in random flows assuming weakness of its diffusion. Then at advanced stages of the passive scalar mixing its unmixed residue is concentrated in a narrow diffusive layer near the wall. We conducted numerical simulations and revealed structures responsible for the passive scalar transport to bulk, they are passive scalar tongues pulled from the diffusive boundary layer. The passive scalar integrated along the wall possesses well pronounced scaling behavior. We propose an analytical scheme giving exponents of the integral passive scalar moments, the exponents agree reasonably with numerics in 3d.


Download PS file (GZipped, 222.8K)  |  Download PDF file (252.8K)


Список работ, цитирующих данную статью, см. здесь.

List of articles citing this article can be found here.