Information about the video

Name:

Stabilität einer Kármánschen Wirbelstraße

Duration:

4:12

Resolution:

720x576 (PAL)

Encoding:

DivX 5.02 (32 MB)

Video/Audio:

German/German

Screenshots from the video

Vortex streets occure in nature and technics

Fig. 1: vortex street of clouds near Guadeloupe

Fig. 2: vortices behind an airplane

Fig. 3: vortex behind starting airplane

Experimental setup

Fig. 4: soap film as fluid for observation of vortices

Fig. 5: position of the observed part of the soap film

Fig. 6: visualization of vortices by means of interference effects

Observations

Fig. 7: alternate separation of vortices

Fig. 8: vortices with clockwise and anti clockwise rotation

Stability of Kármánschen vortex street

Fig. 9: vortices of clouds near arctis

Fig. 10: literature

Fig. 11: ideal model of vortex street

Fig. 12: discussion of two different cases

Fig. 13: Kármán's stability criterion

Fig. 14: confirmation of stability criterion by experimental data