Experimental observation of near-heteroclinic cycles in the von Kármán swirling flow

Physics of Fluids

Volumn 17, Issue 6, 2005, Pages 1-10

  Nore, C ^a,b   Moisy, F ^c   Quartier, L ^d  

^a UNIVERSITÉ PARIS SACLAY   (France)

^b CNRS   (France)

^c Centre National de la Recherche Scientifique   (France)

^d ECOLE NORMALE SUPÉRIEURE   (France)

Author keywords

[No Author keywords available]

Indexed keywords

BIFURCATION (MATHEMATICS); DYNAMICS; REYNOLDS NUMBER; ROTATING DISKS; SWIRLING FLOW; VELOCITY MEASUREMENT; VISUALIZATION; WAVE EFFECTS;

HEIGHT-TO-RADIUS RADIO; IMAGE VELOCIMETRY; NEAR-HETEROCLINIC CYCLES; TIME-DEPENDENT STATES;

FLUID DYNAMICS;

SWIRLING FLOW;

EID: 21244434315     PISSN: 10706631     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1926827     Document Type: Article

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27. Comparison with the numerical computation [see Fig, 16(c) in the paper of Nore et al (ref. 19) allow us to further identity the orientation of the observed states P and P′. The velocity field of the state P [fig. 11(a) ] shows a unique hyperbolic center (x,z) = (0,0), induicating that the two peripherical hyperbolic point H and H* are close to the PIV plane where the measurements are performed [see Fig. 12 (a)]. On the other hand, two hyperbolic points can be seen near the cylinder axis for the state p′ [Fig. 11 (c) indicating that the PIV plane now cuts through the two elliptic points E and E* [see Fig. 12 (c)
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