Fluidic low-frequency oscillator consisting of load-switched diverter and a pair of vortex chambers

0451819 - ÚT 2016 CZ eng C - Konferenční příspěvek (zahraniční konf.)
Tesař, Václav - Peszyński, K. - Smyk, E.
Fluidic low-frequency oscillator consisting of load-switched diverter and a pair of vortex chambers.
Experimental Fluid Mechanics 2015. Liberec: Polypress s.r.o, 2015 - (Dančová, P.; Veselý, M.), s. 792-799
[Experimental Fluid Mechanics 2015 /10./. Praha (CZ), 17.11.2015-20.11.2015]
Grant CEP: GA ČR GA13-23046S
Institucionální podpora: RVO:61388998
Klíčová slova: fluidic oscillator * vortex chamber * load-switched diverter
Kód oboru RIV: BK - Mechanika tekutin

Paper discusses a new configuration of fluidic oscillators, a subject of recent Patent application. There is some similarity with the standard Warren oscillator with its bistable jet-deflection diverter and two feedbacks – which is not suitable for situations demanding very low oscillation frequency. For these conditions the new design replaces jet-deflection switching in the diverter by load-switching effects, with the gradually increased loading by spin-up of fluid in the vortex chambers. The spin-up time also provides the needed time delays. Behaviour is characterised by the oscillation frequency increasing with increasing fluid flow rate – for which was derived a surprisingly simple theoretical solution.
Trvalý link: http://hdl.handle.net/11104/0254900