Mathematics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phrva..46.7608h&link_type=abstract
Physical Review A (ISSN 1050-2947), vol. 46, no. 12, p. 7608-7613.
Mathematics
3
Incompressible Fluids, Navier-Stokes Equation, Renormalization Group Methods, Scalars, Transport Properties, Turbulent Flow, Prandtl Number, Singularity (Mathematics)
Scientific paper
A passive-scalar field is considered to evolve under the influence of a turbulent fluid governed by the Navier-Stokes equation. Turbulent-transport coefficients are calculated by small-scale elimination using a renormalization-group method. Turbulent processes couple both the viscosity and the diffusivity. In the absence of any correlation between the passive-scalar fluctuations and any component of the fluid velocity, the renormalized diffusivity is essentially the same as if the fluid velocity were frozen, although the renormalized equation does contain higher-order nonlinear terms involving viscosity. This arises due to the nonlinear interaction of the velocity with itself. In the presence of a finite correlation, the turbulent diffusivity becomes coupled with both the velocity field and the viscosity. There is then a dependence of the turbulent decay of the passive scalar on the turbulent Prandtl number.
No associations
LandOfFree
Turbulent transport of a passive-scalar field by using a renormalization-group method 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 Turbulent transport of a passive-scalar field by using a renormalization-group method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbulent transport of a passive-scalar field by using a renormalization-group method will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1141008