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Fluidic Injection Scenarios for Shock Pattern Manipulation in Exhausts
University of Cambridge.
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Industrial Engineering and Management (ITM), Centres, Competence Center for Gas Exchange (CCGEx). KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0001-7330-6965
2018 (English)In: AIAA Journal, ISSN 0001-1452, E-ISSN 1533-385X, Vol. 56, no 12, p. 4640-4644Article in journal (Refereed) Published
Abstract [en]

By numerically screening internal fluidic injection scenarios for the manipulation of the double diamond shock pattern in convergent-divergent nozzle exhausts, the individual importance of design parameters is demonstrated. It is found that the evolving shock pattern is sensitive to the injection location, whereas the persistence of the induced counterrotating vortex pairs is primarily governed by the injection pressure. Injection close to the nozzle exit generates secondary vortical structures, amplifying the fluctuations in the nozzle vicinity.

Place, publisher, year, edition, pages
2018. Vol. 56, no 12, p. 4640-4644
Keywords [en]
Supersonic jets, Fluidic Injection, convergent-divergent nozzle, Shock Pattern Manipulation
National Category
Mechanical Engineering
Research subject
Aerospace Engineering; Engineering Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-244615DOI: 10.2514/1.J057537ISI: 000451996500001Scopus ID: 2-s2.0-85063213932OAI: oai:DiVA.org:kth-244615DiVA, id: diva2:1291211
Note

QC 20190305

Available from: 2019-02-22 Created: 2019-02-22 Last updated: 2019-09-18Bibliographically approved

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