کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
650979 | 1457329 | 2006 | 19 صفحه PDF | دانلود رایگان |

Experiments are carried out to find the bulk properties and some structural properties of vortex rings in a stratified fluid. Previous theoretical descriptions of vortex ring propagation speed in a homogeneous fluid are compared to experiment and developed for use in stratified fluids. Vortex rings are fired at oblique angles to the horizontal and at different speeds through a stratified fluid. The buoyancy frequency of the fluid is varied between different series of experiments.New models are proposed which predict the speeds and trajectories of vortex rings fired through a stratified fluid and these are compared to experiment. It is shown that these models perform well in high Froude number flows, but less well in low Froude number flows.
Journal: European Journal of Mechanics - B/Fluids - Volume 25, Issue 3, May–June 2006, Pages 302-320