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	Active control of an annular jet by means of the radial synthetic jet Broučková, Zuzana ; Kordík, Jozef ; Trávníček, Zdeněk ; Tesař, Václav ; Šafařík, Pavel ; Peszyński, K. This experimental study deals with an annular jet, which is actively controlled. Measurement was performed in air by means of the Pitot tube and hot-wire anemometer. The expected resonant behavior of the synthetic jet actuator was confirmed. A possibility of flow control of the mean annular jet was proved. A suitable frequency and velocity amplitude of the control synthetic jet was 600Hz and 23m/s, respectively. Detailed record
	Measurement over NACA 63-418-B profile, I Trávníček, Zdeněk ; Kordík, Jozef ; Luxa, Martin This study deals with a flow over NACA 63-418-B profile. Various experimental methods were used: pneumometric, optical, and thermoanemometric methods, and flow visualization. An active flow control by means of fluid blowing was applied, and experiments with and without the control are discussed. Detailed record
	Active control of an annular jet by means of the radial synthetic jet Broučková, Zuzana ; Kordík, Jozef ; Trávníček, Zdeněk This experimental study deals with an annular jet, which is actively controlled. Firstly, the following partial tasks were measured: axisymmetric continual jet, axisymmetric synthetic jet, radial synthetic jet, and annular jet without control. Measurement was performed in air by means of the Pitot probe and hot-wire anemometer. The results of partial steady tasks confirm knowledge, available from literature. The expected resonant behavior of the synthetic jet actuators was confirmed too. A possibility of flow control of the mean annular jet was proved. A suitable frequency and amplitude of the control synthetic jet was 600Hz and 23m/s, respectively. Detailed record
	Plazmové budiče pro řízení proudění Procházka, Pavel ; Šonský, Jiří ; Uruba, Václav The review of plasma actuators to be used for flow control is presented. Detailed record
	Analýza aerodynamické optimalizační funkce, řízení a zviditelnění proudění na profilech s jednoduchou klapkou pro aplikace na větroních třídy FAI 18m Popelka, Lukáš ; Krejčiřík, P. ; Matějka, Milan ; Jensen, R. Aerodynamic criteria for assessing the performance of flapped airfoils applicable on wings of FAI 18m sailplanes were established by a questionnaire survey. CFD methods were used to calculate values of the criteria. Procedure of target function evaluation, enabling to take into account optimum flap deflection was developed and used for five different airfoils, typical for contemporary top-performance sailplanes. Possibility of drag coefficient reduction by transition control on the lower surface, while flap setting for circling, was studied. Surface flow visualization and integrating rake pressure measurement for optimum transition control was carried out on a high-performance sailplane HPH304S. Detailed record
	Syntetizovaný proud Dančová, P. ; Trávníček, Zdeněk ; Vít, T. Equipments working on the synthetic jet (SJ) principle can be used in aerospace industry, automotive industry, pumps and ejectors, cooling and heating applications, intensification of mixing in chemical reactors. SJ can be used for jet control and vectoring, flow control in external and internal aerodynamics, intensification of heat transfer. The main advantage of these applications is relative simplicity of SJ equipment. This article summarizes primary SJ world studies, and it shows examples of own experimental results. Detailed record
	Numerical solution of the plane synthetic jet flow Hyhlík, Tomáš In the paper the results of numerical simulation of sytetic stream issuing to quescent fluid on infinite step are shown. The FLUENT software was used. Detailed record
	Strategie řízení mezních vrstev Uruba, Václav A review of flow control strategies which could be applied on wall turbulent flows is presented. Control goals are related namely to transition to turbulence and boundary layer separation. A special attention is paid to active control strategies involving hydrodynamically driven oscillatory actuators, particularly synthetic jets. Detailed record
	Heat/mass transfer of axi-symmetric, actively controlled impinging jet Trávníček, Zdeněk ; Peszynski, K. Annular nozzle has been equipped by a fluidic control of a jet flow state. The jet flow can be either focused along the nozzle axis or spread out of nozzle axis. Nozzle geometry aimed an enhancement of head and mass transfer on exposed wall by means of active flow control. A visualization of the jet flow was performed, mass transfer was measured by naphthalene sublimation method, and heat/ mass transfer analogy was used. Detailed record
	Řízení proudění pomocí syntetizovaných paprsků Uruba, Václav Generation, evolution and interaction of synthetic jets are reviewed. Detailed record

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