Název: Proposal for an electro/fluidic transducer based on wall-jet separation from a heated curved surface
Autoři: Tesař, Václav
Typ dokumentu: Příspěvky z konference
Konference/Akce: Experimental Fluid Mechanics 2014, Český Krumlov (CZ), 2014-11-18 / 2014-11-21
Rok: 2015
Jazyk: eng
Abstrakt: Transducers for converting electric input signals into a change of flow rate in a fluidic device are increasing in importance – and yet there is no fully satisfactory design solution. Standard two-stage approach is to perform in the first stage a conversion into a motion of a movable (or deformable) mechanical component. Then in the second stage the mechanical effect acts on the fluid flow. Mechanical components complicate manufacturing, have tendency to get stuck or worn – or, in the case of elastic support, to endanger reliability by breakages (e.g. due to material fatigue). Their inertia limits the frequency range. Author proposes an apparently not yet applied idea of transducer containing no moving or deformed parts. The electric input heats a surface to which an air jet is attached, causing its separation. Preliminary experiments show that relatively small heating suffices to change substantially the flowfield — and the reduction of the attachment wall to a thin metal foil can make the frequency range of responses quite acceptable.
Klíčová slova: heated surface; separation; wall jet
Číslo projektu: GA13-23046S (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: EFM14 - EXPERIMENTAL FLUID MECHANICS 2014, ISSN 2100-014X

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0242224

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-180394


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference