caa a22 4500 477093388 CHVBK 20180405111520.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF00204635 doi (NATIONALLICENCE)springer-10.1007/BF00204635 Feedback control of vortex shedding from a circular cylinder by cross-flow cylinder oscillations [Elektronische Daten] [H. Warui, N. Fujisawa] Feedback control of vortex shedding from a circular cylinder in a uniform flow at moderate Reynolds numbers is studied experimentally with the cylinder subjected to feedback cylinder oscillations in cross-flow direction. The cylinder oscillation is digitally phase shifted with respect to the shedding vortex and is controlled by velocity feedback from the shear layer of the cylinder wake. Possible attenuation of vortex shedding is demonstrated by hot-wire measurements of the flow field and its mechanisms are studied by simultaneous data sampling and flow visualization with the smoke wire method and a laser-sheet illumination technique. Measurement results reveal substantial reduction in the fluctuating reference velocity at the optimum phase control. Flow visualization study indicates that the shear layer roll-up and the eventual vortex formation are dynamically attenuated under the control which results in a modification of the near wake. Springer-Verlag, 1996 Warui H. Department of Mechanical System Engineering, Gunma University, 376, Kiryu, Japan aut Fujisawa N. Department of Mechanical System Engineering, Gunma University, 376, Kiryu, Japan aut Experiments in Fluids Springer-Verlag 21/1(1996-05-01), 49-56 0723-4864 21:1<49 1996 21 348 https://doi.org/10.1007/BF00204635 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00204635 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Warui H. Department of Mechanical System Engineering, Gunma University, 376, Kiryu, Japan aut NATIONALLICENCE 700 1- Fujisawa N. Department of Mechanical System Engineering, Gunma University, 376, Kiryu, Japan aut NATIONALLICENCE 773 0- Experiments in Fluids Springer-Verlag 21/1(1996-05-01), 49-56 0723-4864 21:1<49 1996 21 348 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer