Moderately strong vorticity in a bathtub-type flow


Autoria(s): Klimenko, A. Y.
Contribuinte(s)

M.Y. Hussaini

Data(s)

01/01/2001

Resumo

Theoretical and numerical analysis is performed for an inviscid axisymmetric vortical bathtub-type flow. The level of vorticity is kept high so that the image of the flow on the radial-axial plane (r-z plane) is not potential. The most significant findings are: (1) the region of validity of the strong vortex approximation is separated from the drain by a buffer region, (2) the power-law asymptote of the stream function, specified by Delta Psi similar to r(4/3) Deltaz, appears near the axis when vorticity in the flow is sufficiently strong and (3) the local Rossby number in the region of the 4/3 power-law the initial vorticity level in the flow and the global Rossby number.

Identificador

http://espace.library.uq.edu.au/view/UQ:58772

Idioma(s)

eng

Publicador

Springer-Verlag

Palavras-Chave #Mechanics #Physics, Fluids & Plasmas #C1 #291801 Fluidization and Fluid Mechanics #780102 Physical sciences
Tipo

Journal Article