000014760 001__ 14760
000014760 005__ 20161115100201.0
000014760 04107 $$aeng
000014760 046__ $$k2016-08-21
000014760 100__ $$aHourigan, Kerry
000014760 24500 $$aThe curious case of the vanishing vorticity (INVITED)

000014760 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014760 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014760 506__ $$arestricted
000014760 520__ $$2eng$$aThe flow over a submerged horizontally translating cylinder results in vorticity of opposite sign being shed from the top and bottom. However, when the cylinder is close to a stress-free surface, the vorticity shed from the top of the cylinder seems to disappear downstream, for zero and non-zero Froude number cases. For the zero Froude number flow case, vorticity shed from the top surface of the cylinder can diffuse from the body of the fluid into the interface. For high Froude numbers, the stress-free surface curves and vorticity can stream into the body of the fluid, cross-annihilating vorticity shed from the top surface of the cylinder. For each case, it is shown that circulation is conserved in the flow, by taking account of the circulation at the stress-free interface. Such an interface is therefore a potent source of vorticity, even in the absence of external forcing, and can dramatically modify vortex formation and evolution.

000014760 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014760 653__ $$a

000014760 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014760 720__ $$aHourigan, Kerry
000014760 8560_ $$ffischerc@itam.cas.cz
000014760 8564_ $$s125308$$uhttps://invenio.itam.cas.cz/record/14760/files/TS.FM15-1.05.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1512, code TS.FM15-1.05
.
000014760 962__ $$r13812
000014760 980__ $$aPAPER