A dynamical equation for the distribution of a scalar advected by turbulence

Details A dynamical equation for the distribution of a scalar advected by turbulence A dynamical equation for the distribution of a scalar advected by turbulence

2006-03-27

arxiv.org/abs/physics/0603225v1

Physics

Fluid Dynamics

4 pages, 1 figure

Scientific paper

A phenomenological model for the dissipation of scalar fluctuations due to the straining by the fluid motion is proposed in this letter. An explicit equation is obtained for the time evolution of the probability distribution function of a coarse-grained scalar concentration. The model relies on a self-convolution process. We first present this model in the Batchelor regime and then extend empirically our result to the turbulent case. The inclusion of this model in more general transport equations, including spatial gradients, is discussed in relation with 2D turbulence and stratified flows.

Affiliated with

Also associated with

No associations

Rating

A dynamical equation for the distribution of a scalar advected by turbulence 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 A dynamical equation for the distribution of a scalar advected by turbulence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A dynamical equation for the distribution of a scalar advected by turbulence will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-413745