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Damping of the Second Mode Instability on a Cone in Hypersonic Flow
Willems, Sebastian and Gülhan, Ali (2011) Damping of the Second Mode Instability on a Cone in Hypersonic Flow. In: Proceedings of the 7th European Symposium on Aerothermodynamics. ESA Communications. 7th European Symposium on Aerothermodynamics, 9.-12. Mai 2011, Brügge, Belgien. ISBN 978-92-9221-256-8. ISSN 1609-042X
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Abstract
This paper presents the results of transition experiments with a 3° half angle cone at Mach 6. The transition position was measured with an infrared camera and simultaneously the pressure fluctuations in the boundary layer with high speed pressure sensors. A segment with regular micro pores causes a measurable damping of the pressure fluctuations in the boundary layer (Mack modes) but no transition delay. In addition the influence of the nose radius, of the unit Reynolds number and of the free stream temperature on the transition as well as the pressure fluctuations is investigated.
| Document Type: | Conference or Workshop Item (Paper) | ||||||
|---|---|---|---|---|---|---|---|
| Title: | Damping of the Second Mode Instability on a Cone in Hypersonic Flow | ||||||
| Authors: |
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| Date: | August 2011 | ||||||
| Journal or Publication Title: | Proceedings of the 7th European Symposium on Aerothermodynamics | ||||||
| Refereed publication: | No | ||||||
| In SCOPUS: | No | ||||||
| In ISI Web of Science: | No | ||||||
| Editors: |
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| Publisher: | ESA Communications | ||||||
| ISSN: | 1609-042X | ||||||
| ISBN: | 978-92-9221-256-8 | ||||||
| Status: | Published | ||||||
| Keywords: | transition; Mack mode; damping; slender cone; | ||||||
| Event Title: | 7th European Symposium on Aerothermodynamics | ||||||
| Event Location: | Brügge, Belgien | ||||||
| Event Type: | international Conference | ||||||
| Event Dates: | 9.-12. Mai 2011 | ||||||
| Organizer: | European Space Agency | ||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||
| HGF - Program: | Raumfahrt | ||||||
| HGF - Program Themes: | R RP - Raumtransport | ||||||
| DLR - Research area: | Raumfahrt | ||||||
| DLR - Program: | R RP - Raumtransport | ||||||
| DLR - Research theme (Project): | R - Projekt IMENS-3C (old) | ||||||
| Location: | Köln-Porz | ||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology | ||||||
| Deposited By: | Sebastian Willems | ||||||
| Deposited On: | 13 Jan 2012 07:58 | ||||||
| Last Modified: | 13 Jan 2012 07:58 |
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