Inflection Point And Vorticity Transport In A Neutrally Stratified Planetary Boundary Layer Flow

Details Inflection Point And Vorticity Transport In A Neutrally Stratified Planetary Boundary Layer Flow Inflection Point And Vorticity Transport In A Neutrally Stratified Planetary Boundary Layer Flow

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..dfd..ia01l&link_type=abstract

American Physical Society, Division of Fluid Dynamics Meeting, November 23-25, 1997, abstract #Ia.01

Physics

Fluid Dynamics

Scientific paper

The role played by the inflection point in a neutrally stratified planetary boundary layer flow is investigated using large-eddy simulation technique. The inflection point (or thin shear layer) is formed dynamically during either the collision of high- and low-speed momentum fluxes or the impinging of low-speed momentum fluxes against the mean flow. The roll-up process of the thin shear layer into a circular vorticity tube may differ and it depends on how the shear layer is formed. The effect of the inflection point on the roll-up process of the shear layer is through the turbulent vorticity transport term in the turbulent vorticity equation. It effect is quantified and compared with other terms in turbulent vorticity equation.

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