Original title: Mechanically modulated nozzles
Authors: Tesař, Václav
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2015, Praha (CZ), 2015-02-11 / 2015-02-13
Year: 2015
Language: eng
Abstract: There are applications in which jet-generating nozzles are requested to have variable properties, responding to a mechanical input action. The paper studies nozzles with a needle - a component with tapered end inserted into the nozzle exit channel. Axial movement of the needle varies the cross-section area available for the flow. Author made laboratory and computational investigations of the simplest shape: a sharp-point cone inserted into a sharpedged, constant-diameter exit channel. Presented examples from accumulated data discuss pressure measurements: overall pressure loss, pressure distribution on the cone surface, and on surfaces of the exit channel.
Keywords: flow separation; needle nozzles; nozzles
Project no.: GA13-23046S (CEP)
Funding provider: GA ČR
Host item entry: Topical Problems of Fluid Mechanics 2015, ISBN 978-80-87012-55-0, ISSN 2336-5781

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0246354

Permalink: http://www.nusl.cz/ntk/nusl-187381


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers