Shear dispersion in time-varying flows
Abstract
Shear dispersion in time varying flows was shown to be parameterizable as effective diffusion with a time varying diffusivity. This parameterization was appropriate only for time along in comparison with the cross shear mixing time. High frequency variations of the flow did not contribute substantially to the mixing. Low frequency variations of the flow were accounted for by simply allowing the parameters in the expression for the effective diffusivity to take on a time dependence.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1977
- Bibcode:
- 1977STIN...7821421T
- Keywords:
-
- Diffusion;
- Mixing;
- Shear Flow;
- Green'S Functions;
- Mathematical Models;
- Parameterization;
- Time Dependence;
- Fluid Mechanics and Heat Transfer