Large-scale effects on meso-scale modeling for scalar transport

Details Large-scale effects on meso-scale modeling for scalar transport Large-scale effects on meso-scale modeling for scalar transport

2005-07-25

arxiv.org/abs/nlin/0507053v1

Nonlinear Sciences

Chaotic Dynamics

19 pages, 8 figures

Scientific paper

10.1016/j.physd.2006.07.007

The transport of scalar quantities passively advected by velocity fields with a small-scale component can be modeled at meso-scale level by means of an effective drift and an effective diffusivity, which can be determined by means of multiple-scale techniques. We show that the presence of a weak large-scale flow induces interesting effects on the meso-scale scalar transport. In particular, it gives rise to non-isotropic and non-homogeneous corrections to the meso-scale drift and diffusivity. We discuss an approximation that allows us to retain the second-order effects caused by the large-scale flow. This provides a rather accurate meso-scale modeling for both asymptotic and pre-asymptotic scalar transport properties. Numerical simulations in model flows are used to illustrate the importance of such large-scale effects.

Affiliated with

Also associated with

No associations

Rating

Large-scale effects on meso-scale modeling for scalar transport 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 Large-scale effects on meso-scale modeling for scalar transport, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large-scale effects on meso-scale modeling for scalar transport will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-53356