AN ANNULAR IMPINGING JET ALTERNATED BY PULSE-MODULATED SYNTHETIC JETS

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F11%3A00439991" target="_blank" >RIV/61388998:_____/11:00439991 - 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
AN ANNULAR IMPINGING JET ALTERNATED BY PULSE-MODULATED SYNTHETIC JETS
Original language description
The present experimental study focuses on a generation and control of annular impinging jets. The used working fluid is air An active flow control system is designed with six radial synthetic jets, which are generated by a common actuator located in thecentral body of the annular nozzle. The synthetic jets are pulse-modulated. Flow visualization and measurements of the wall pressure and wall heat transfer have been performed. Two flowfield steady patterns A and B (small or large recirculation bubbles,respectively) are recognized. The pattern B exists without the actuation, the unmodulated actuation causes the flowfield switching into the pattern A, and the pulse-modulated actuation generates an alternating flowfield. The present results indicate thatthe area of higher heat transfer can be slightly spread by means of flow alternation. However, the penalty for this slight gain is a substantial reduction of the heat transfer in the central area.
Czech name
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Czech description
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
PROCEEDINGS OF THE ASME/JSME 8TH THERMAL ENGINEERING JOINT CONFERENCE 2011
ISBN
978-0-7918-5454-9
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
569-576
Publisher name
AMER. SOC. MECHANICAL ENGINEERS
Place of publication
NEW YORK
Event location
Honolulu
Event date
Mar 13, 2011
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000319843000068

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