Evidence for forcing-dependent steady states in a turbulent swirling flow.
We study the influence on steady turbulent states of the forcing in a von Karman flow, at constant impeller speed, or at constant torque. We find that the different forcing conditions change the nature of the stability of the steady states and reveal dynamical regimes that bear similarities to low-dimensional systems. We suggest that this forcing dependence may be applicable to other turbulent systems.
Laboratoire SPHYNX, Service de Physique de l'État Condensé, DSM, CEA Saclay, CNRS URA 2464, 91191 Gif-sur-Yvette, France.
B
B
Saint-Michel
Laboratoire SPHYNX, Service de Physique de l'État Condensé, DSM, CEA Saclay, CNRS URA 2464, 91191 Gif-sur-Yvette, France.
B
B
Dubrulle
Laboratoire de Physique des Océans, UMR 6523 CNRS/IFREMER/IRD/UBO, 29285 Brest, France.
L
L
Marié
Laboratoire Dynfluid, ENSAM ParisTech, CNRS EA92, 151, boulevard de l'Hôpital 75013 Paris, France.
F
F
Ravelet
Laboratoire SPHYNX, Service de Physique de l'État Condensé, DSM, CEA Saclay, CNRS URA 2464, 91191 Gif-sur-Yvette, France.
F
F
Daviaud