Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...412..664a&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 412, no. 2, p. 664-674.
Astronomy and Astrophysics
Astrophysics
6
Buoyancy, Compressible Flow, Stratified Flow, Vortices, Stellar Convection, Velocity Distribution
Scientific paper
In this paper we consider the effect of dynamical buoyancy (Parker) on the motion of stratified fluid vortex tubes. We find that the dynamical buoyancy force does not necessarily lead to a buoyant rise if there exists a flow field external to a tube. In particular, the vortex tubes presented in our previous work are shown to have a pressure force exactly canceling the buoyancy force so that they do not move vertically (i.e., parallel to gravity) at all. Moreover, we construct a more general class of vortex tubes and find that their vertical motion can be either up or down, depending on the detailed vorticity distribution, regardless of the fact that they are all dynamically buoyant. We find that the vertical motion is intimately related to the horizontal self-motion of stratified fluid vortex tubes. Finally, we note that the presence of dynamical buoyancy implies that steady state compressible flow solutions for isolated fluid regions in a gravitational field do not exist. These results may have relevance to astrophysical convection.
No associations
LandOfFree
On the dynamical buoyancy of vortices does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the dynamical buoyancy of vortices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the dynamical buoyancy of vortices will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1491027