000014764 001__ 14764
000014764 005__ 20161115100201.0
000014764 04107 $$aeng
000014764 046__ $$k2016-08-21
000014764 100__ $$aBrøns, Morten
000014764 24500 $$aTopology of vortex creation and merging: Wakes and multi- Gaussian models

000014764 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014764 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014764 506__ $$arestricted
000014764 520__ $$2eng$$aWith the purpose of clarifying the topology of vortex creation and vortex merging in 2D flows, we consider the dynamics of the critical points of vorticity. These include local extrema, which we identify as feature points of vortices, as well as saddle points. We present a precise criterion for the merging or creation of a vorticity extremum and a saddle, and describe the motion of the critical points close to the bifurcation. We show how creation of vortices in this sense occurs in the wake of a circular cylinder, and how vortex merging occur in a multi-Gaussian model of two vortices.

000014764 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014764 653__ $$a

000014764 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014764 720__ $$aBrøns, Morten
000014764 8560_ $$ffischerc@itam.cas.cz
000014764 8564_ $$s132717$$uhttps://invenio.itam.cas.cz/record/14764/files/TS.FM15-2.03.pdf$$yOriginal version of the author's contribution as presented on CD,  page 1520, code TS.FM15-2.03
.
000014764 962__ $$r13812
000014764 980__ $$aPAPER