elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

Investigation of a two dimensional Scramjet Inlet Flow Field at Mach 7

Häberle, Jürgen und Gülhan, Ali (2007) Investigation of a two dimensional Scramjet Inlet Flow Field at Mach 7. Journal of Propulsion and Power. AIAA.

Dieses Archiv kann nicht den gesamten Text zur Verfügung stellen.

Offizielle URL: http://www.AIAA.org

Kurzfassung

measurement campaign has been carried out to investigate the viscous flow effects in a fixed geometry two dimensional (2D) Scramjet inlet at Mach 7. The tests have been performed in a hypersonic blow down wind tunnel facility. The existing boundary layer separation due to shock interaction in the inlet throat can lead to inlet un-start. Therefore a optional passive boundary layer bleed has been integrated at the throat. The passive bleed reduces the lip shock induced separation bubble in the throat significantly. The obtained experimental wall pressure distribution and Pitot pressure profiles are discussed and compared to 2D and 3D CFD calculations. To investigate the compression behavior, different back pressure ratios have been applied to the isolator flow and the effects on the internal flow structure are analyzed by means of Shadowgraph pictures, static pressure distribution and Pitot pressure profiles at the exit of the isolator. The heat transfer coefficient to the inner side wall of the isolator is calculated using the time dependent surface temperature, measured with an infrared system. The resulting 2D Stanton number distributions are presented for different configurations and different back pressure ratios. In addition three different Reynolds numbers have been used to investigate the effect on the separation bubble located in the corner of the first and second ramp transition and the resulting change in ramp heat flux.

Dokumentart:Zeitschriftenbeitrag
Titel:Investigation of a two dimensional Scramjet Inlet Flow Field at Mach 7
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Häberle, JürgenRWTH Aachen
Gülhan, AliNICHT SPEZIFIZIERT
Datum:2007
Erschienen in:Journal of Propulsion and Power
Referierte Publikation:Ja
In ISI Web of Science:Ja
Verlag:AIAA
Status:akzeptierter Beitrag
Stichwörter:Scramjet, heat transfer, internal flowfield, inlet, isolator, boundary layer bleed, Stanton number
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W RP - Raumtransport
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W RP - Raumtransport
DLR - Teilgebiet (Projekt, Vorhaben):W - Grundlagen Raumtransport - Anlagen und Messtechnik (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik
Hinterlegt von: Christine Adams
Hinterlegt am:15 Jan 2008
Letzte Änderung:27 Apr 2009 14:35

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.