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	Visualization of synthetic jets at higher stokes numbers Broučková, Zuzana ; Trávníček, Zdeněk ; Šafařík, Pavel Visualization of synthetic jets at higher Stokes numbers (S = 90 and 127) by the phase-locked smoke-wire technique is presented and discussed. The working fluid is air. The Reynolds numbers are quantified using hot-wire anemometry. Although our method of visualization essentially provides only qualitative results, the present study also demonstrates some quantitative results, namely the behavior of the zero-net-mass-flux jet near its critical stage. Visualization of the sub-critical stage is also shown. Detailed record
	The interaction of continual and synthetic jets Broučková, Zuzana ; Trávníček, Zdeněk ; Šafařík, Pavel This work deals with an interaction of continual and cross synthetic jets. Both jets are axisymmetric. All measurements have been performed in air by means of the Pitot tube and hot-wire anemometry. Flow visualization has been also performed. The possibility of flow control is shown and quantified. For the moderate momentum ratio, the mean jet deflection reasonably agrees with the momentum conservation. Detailed record
	Use of radial synthetic jets for active control of annular jets Broučková, Zuzana ; Šafařík, Pavel ; Trávníček, Zdeněk This experimental study deals with an annular jet, which is actively controlled by means of the radial synthetic jet. Measurements were performed in air by means of the Pitot tube.Visualization was also performed. A possibility of flow control of the means annular jet was proved. A suitable frequency of control synthetic jet was 600 Hz. Detailed record
	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
	Tip Cascade Aerodynamics of Turbine Rotor Blade 1220 mm Rudas, B. ; Synáč, J. ; Šťastný, M. ; Luxa, Martin ; Šimurda, David ; Šafařík, Pavel The paper is focused on aerodynamic characteristics of the tip section of a steam turbine last stage rotor blade with an active span 1220 mm. The tip cascade is aerodynamically highly loaded with supersonic outlet flow at design of Ma = 1,6. CFD simulations with a Navier-Stokes code were used to design the flow structure. The results of calculations are discussed and compared with measured flow structures. Detailed record
	Calibration of Five- Hole Conical Probe for High-Speed Flow Measurements Kožíšek, Martin ; Šafařík, Pavel ; Luxa, Martin ; Šimurda, David This report deals with calibration of a conial five-hole probe in the region of transonic velocities. The probe is designated for research on threedimensional flow pattern. The method of flow angle calibration, data asquisition and evalution of data are described. Data evalution is desribed to samples on higher subsonic velocities. Detailed record
	On Wakes in an Asymmetric Supersonic Flow Past Trailing Edges of a Profile Blade Cascade Šafařík, Pavel ; Šimurda, David Paper is concerned with results of research on the asymmetric supersonic flow past trailing edge. Distributions of the exit flow angle are compared to theoretical and reference value. Detailed record
	Aerodynamika špičkového řezu turbínové lopatky 1220mm Synáč, J. ; Rudas, B. ; Šťastný, M. ; Luxa, Martin ; Šimurda, David ; Šafařík, Pavel The paperis focused on aerodynamic characteristics of the tip section of a steam turbine last stage rotor blade with an active span 12200mm (48"). Detailed record
	Experimentální aerodynamický výzkum jako podpora při návrhu turbostrojů Šafařík, Pavel ; Luxa, Martin ; Šimurda, David The paper describes a role of experimental aerodynamic research oriented to the support of the design and computauion of turbomachines. The research techniques are briefly introduced. They are namely optical measurements of flow fields and pneumatic measurements by means of traversing. Results of the high-speed aerodynamic modelling of the flow past a blade cascade cascade representing a section in the balding of the last stage of a large output steam turbine are presented. Detailed record
	Modification of synthetic jet actuators for heat transfer Kordík, Jozef ; Šafařík, Pavel ; Trávníček, Zdeněk Synthetic jets as means of heat transfer are well known from literature. Aim of the paper is to summarise options how to set synthetic jet actuator so that the heat transfer is enhanced. The paper concerns two ways how to do it. Increasing positive velocity component at the synthetic jet actuator output and adjusting right actuator frequency are those possibilities. Detailed record

See also: similar author names
2	Šafařík, P.
4	Šafařík, Petr

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