caa a22 4500 606197001 CHVBK 20210128100927.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00348-014-1890-6 doi (NATIONALLICENCE)springer-10.1007/s00348-014-1890-6 Characterization of the turbulent bistable flow regime of a 2 D bluff body wake disturbed by a small control cylinder [Elektronische Daten] [Vladimir Parezanović, Romain Monchaux, Olivier Cadot] A small control cylinder placed in a turbulent wake of a much larger 2D bluff body can cause a significant increase in drag fluctuations. These fluctuations occur on timescales longer than the timescales of the vortex shedding. The critical positions of the control cylinder are highly localized. Ensemble averages of PIV acquisitions and pressure measurements at the base of the bluff body reveal a bistable wake regime. Long duration hot-wire measurements are used to characterize the states and the transition process. The results show that a stochastic process is responsible for the transitions between the two stable states. Springer-Verlag Berlin Heidelberg, 2015 Parezanović Vladimir Institute PPrime, CNRS UPR3346, 43 Rue de l'Aerodrome, F-86000, Poitiers, France aut Monchaux Romain Unité de Mécanique, Ecole Nationale Supérieure de Techniques Avancées - ParisTech, 828 Boulevard des Maréchaux, F-91762, Palaiseau Cedex, France aut Cadot Olivier Unité de Mécanique, Ecole Nationale Supérieure de Techniques Avancées - ParisTech, 828 Boulevard des Maréchaux, F-91762, Palaiseau Cedex, France aut Experiments in Fluids Springer Berlin Heidelberg 56/1(2015-01-01), 1-8 0723-4864 56:1<1 2015 56 348 https://doi.org/10.1007/s00348-014-1890-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-014-1890-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Parezanović Vladimir Institute PPrime, CNRS UPR3346, 43 Rue de l'Aerodrome, F-86000, Poitiers, France aut NATIONALLICENCE 700 1- Monchaux Romain Unité de Mécanique, Ecole Nationale Supérieure de Techniques Avancées - ParisTech, 828 Boulevard des Maréchaux, F-91762, Palaiseau Cedex, France aut NATIONALLICENCE 700 1- Cadot Olivier Unité de Mécanique, Ecole Nationale Supérieure de Techniques Avancées - ParisTech, 828 Boulevard des Maréchaux, F-91762, Palaiseau Cedex, France aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/1(2015-01-01), 1-8 0723-4864 56:1<1 2015 56 348