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Hypersonic Transition in High Enthalpy Facilities

Wagner, Alexander and Dittert, Christian and Kütemeyer, Marius (2017) Hypersonic Transition in High Enthalpy Facilities. Lecture Series: Multiphysics phenomena analysis on boundary layer stability in hypersonic regime - STO-AVT-289, 2017-09-20, Sint-Genesius-Rode, Belgium.

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Official URL: https://www.vki.ac.be/index.php/events-ls/lecture-series-events-programme-2017/eventdetail/432/259|258|257|251|252|256|255|253|254|278|280/multiphysics-phenomena-analysis-on-boundary-layer-stability-in-hypersonic-regime-sto-avt-289


The present manuscript supports a lecture given in the scope of the VKI Lecture Series ’Multiphysics phenomena analysis on boundary layer stability in hypersonic regime’. It is limited to hypersonic transition phenomena in hypersonic shock tunnels at low enthalpy conditions. The manuscript provides a brief overview over existing high enthalpy shock tunnels and discusses the role of such facilities with respect to hypersonic boundary layer transition research. The operating principle of a typical shock tunnel is explained based on the High Enthalpy Shock Tunnel G¨ottingen (HEG). Furthermore, techniques to assess the free-stream disturbances in the challenging test environment of a shock tunnels are discussed and results obtained by means of a wedge shaped probe a presented. Moreover, transition studies on the second mode instability in HEG are introduced. The presence of the second mode and its dominance in the transition process on a cone allows to study transition control strategies targeting the suppression of the second mode. A passive control strategy applying ultrasonically absorptive carbon matrix composites led to promising results and encourages the development of the next generation of, high temperature resistant, porous ceramics.

Item URL in elib:https://elib.dlr.de/114392/
Document Type:Conference or Workshop Item (Speech)
Title:Hypersonic Transition in High Enthalpy Facilities
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:porous coatings, ultrasonic absorptive surfaces, transition control, UAT, hypersonics, HEG
Event Title:Lecture Series: Multiphysics phenomena analysis on boundary layer stability in hypersonic regime - STO-AVT-289
Event Location:Sint-Genesius-Rode, Belgium
Event Type:Other
Event Date:20 September 2017
Organizer:von Karman Institute for Fluid Dynamics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Systemanalyse Raumtransport (old)
Location: Göttingen , Stuttgart
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Institute of Structures and Design > Space System Integration
Deposited By: Bachmann, Barbara
Deposited On:17 Nov 2017 11:11
Last Modified:24 Apr 2024 20:18

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