A two-dimensional numerical study of horizontal roll vortices in the neutral atmospheric boundary layer
Abstract
The dynamics of large-scale, horizontal roll vortices in the neutral planetary boundary layer are investigated by a mixing length hypothesis. These assumptions are supported by atmospheric observations of large eddies which are highly elongated in a direction close to that of the geostrophic wind, together with the observed partitioning of turbulence energy between the large eddies and a distinctly smaller scale. The results indicate a strong sensitivity to the roll orientation, and also the presence of a slow variation on the Coriolis timescale.
- Publication:
-
2nd Symposium on Turbulent Shear Flows
- Pub Date:
- 1979
- Bibcode:
- 1979stsf.proc...13M
- Keywords:
-
- Atmospheric Boundary Layer;
- Atmospheric Turbulence;
- Computational Fluid Dynamics;
- Vortices;
- Two Dimensional Flow;
- Velocity Distribution;
- Fluid Mechanics and Heat Transfer