EXPERIMENTAL STUDY OF INFLUENCE OF ACTIVE METHODS OF FLOW CONTROL ON THE FLOW FIELD PAST CYLINDER

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F09%3A00161193" target="_blank" >RIV/68407700:21220/09:00161193 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
EXPERIMENTAL STUDY OF INFLUENCE OF ACTIVE METHODS OF FLOW CONTROL ON THE FLOW FIELD PAST CYLINDER
Original language description
The main emphasis of the paper is placed on an influence of an active method of flow control, as a synthetic jet, on a flow field around a cylinder of aspect ratio 1.8. It summarizes the influence of basic factors that affect the design of the syntheticjet actuator, particularly Strouhal number - nondimensional frequency (F+), Stokes number of output orifice (St), Reynolds number (Re), momentum coefficient (c) and a position of the output orifice of the synthetic jet actuator. The actuator is positioned in front of the boundary layer separation. The principle of a flow control with and without amplitude modulation was used in order to generate lower actuating frequency. An amount of input energy of the actuators that influences the flow filed was measured. A change of lift and drag coefficient was calculated from measured pressure distribution on the model. The alternatives with and without flow control are compared through the relation of saved up and the added energy.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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