Dust devil dynamics

A self‐consistent hydrodynamic model for the solar heating‐driven onset of a dust devil vortex is derived and analyzed. The toroidal flows and vertical velocity fields are driven by an instability that arises from the inversion of the mass density stratification produced by solar heating of the sand...

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Veröffentlicht in:	Journal of geophysical research. Atmospheres 2016-06, Vol.121 (12), p.7197-7214
Hauptverfasser:	Horton, W., Miura, H., Onishchenko, O., Couedel, L., Arnas, C., Escarguel, A., Benkadda, S., Fedun, V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aerodynamics Air flow Atmospheric particulates Climatology Computational fluid dynamics Computer simulation Convection Convection modes critical temperature gradients Density Density stratification Dust Dust devils Dynamics Energy transfer Fields Fluid flow Gases Geophysics Heating Hydrodynamics Instability Interactions intermittent 3‐D vortices Mathematical models Meteorology Neutral gases Nonlinear dynamics Nonlinear systems Nonlinearity Parameters Physics Sand Sand particles Sandy soils Secondary flow Shear Shear flow Soil surfaces Soil temperature Soils Solar heating Stratification Structures Temperature effects Temperature gradients Three dimensional models Tornadoes Tribo charging Velocity Vertical velocities Vertical vorticity Vortex flow Vortices Vorticity Weather Weather forecasting
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