Statistics – Computation
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987qjrms.113..413m&link_type=abstract
Royal Meteorological Society, Quarterly Journal (ISSN 0035-9009), vol. 113, April 1987, p. 413-443.
Statistics
Computation
67
Atmospheric Circulation, Environment Simulation, Planetary Boundary Layer, Vortices, Computational Grids, Flow Velocity, Rotating Fluids, Static Stability, Vertical Distribution
Scientific paper
A series of large-eddy simulations of the neutral-static-stability planetary boundary layer has been conducted. The simulations differ in the size of the computational domain and the scales represented by the subgrid-scale turbulence parameterization. The flow eddies are always irregular but show an elongation in the direction of the local velocity shear vector. The dominant horizontal scales of the eddies increase with height in the boundary layer and become much larger than the boundary layer depth. All of this wide range of scales of motion is important in determining the gross boundary layer characteristics. The larger scales of motion have dynamics influenced by both the vertical and horizontal components of the earth's rotation. The flow statistics are compared with previous simulations and with high-order closure models.
Mason Peter J.
Thomson David J.
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