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