Stereoscopic PIV measurement of boundary layer affected by DBD actuator

0452007 - ÚT 2016 CZ eng C - Konferenční příspěvek (zahraniční konf.)
Procházka, Pavel P. - Uruba, Václav
Stereoscopic PIV measurement of boundary layer affected by DBD actuator.
Experimental Fluid Mechanics 2015. Liberec: Polypress s.r.o, 2015 - (Dančová, P.; Veselý, M.), s. 652-655
[Experimental Fluid Mechanics 2015 /10./. Praha (CZ), 17.11.2015-20.11.2015]
Grant CEP: GA ČR(CZ) GP14-25354P
Institucionální podpora: RVO:61388998
Klíčová slova: boundary layer * PIV * plasma actuator * POD
Kód oboru RIV: BK - Mechanika tekutin

The effect of ionic wind generated by plasma actuator on developed boundary layer inside a narrow channel was investigated recently. Since the main investigated plane was parallel to the channel axis, the description of flow field was not evaluated credibly. This paper is dealing with cross-section planes downstream the actuator measured via 3D time-resolved PIV. The actuator position is in spanwise or in streamwise orientation so that ionic wind is blown in the same direction as the main flow or in opposite direction or perpendicularly. The interaction between boundary layer and ionic wind is evaluated for three different velocities of main flow and several parameters of plasma actuation (steady and unsteady regime, frequency etc.). Statistical properties of the flow are shown as well as dynamical behaviour of arising longitudinal vortices are discussed via phase-locked measurement and decomposition method.
Trvalý link: http://hdl.handle.net/11104/0254871