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

Numerical Investigations of the Flow through a Fluidic Jet Reaction Control Element

Reisch, U. und Meuer, U. (1999) Numerical Investigations of the Flow through a Fluidic Jet Reaction Control Element. DLR-Interner Bericht. 129-99/3.

Dieses Archiv kann nicht den gesamten Text zur Verfügung stellen.

Kurzfassung

The planar fluidic jet reaction control element (FLE), which is the subject of the present work, has been designed and built for test purposes. Gaseous nitrogen is used as the main medium, which is supplied to the main chamber. The flow is supersonically overexpanded in the deverging section of the nozzle and can be directed to one of the two exit channels by injection of a secondary mass flow of air through the respective slit.Depending on the chamber pressure, different operating modes exist. Since the conduction of experiments takes a considerable amount of time, especially for parametric studies, the numerical simulation of the flow through a fluidic element is investigated in the present work. For this purpose, the DLR Euler- and Navier-Stokes-code FLOWer has been extended by the required boundary conditions and the improved AUSM-scheme for the spatial discretization for the computation of hypersonic configurations with strong shocks. In order to gain reliable results the code is verified for the application to fluidic elements, considering grid density, turbulence model, boundary conditions and the modeling of the outer element geometry. The code validation is carried out by comparing the numerical solutions to the experimental results mentioned above. Numerical solutions are obtained for a variety of chamber pressures, each with and without injection of a secondary mass flow. Code verification and validation provide the base for a parametric study performed for the secondary flow parameters.

Dokumentart:Berichtsreihe (DLR-Interner Bericht)
Zusätzliche Informationen: LIDO-Berichtsjahr=1999,
Titel:Numerical Investigations of the Flow through a Fluidic Jet Reaction Control Element
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Reisch, U.NICHT SPEZIFIZIERT
Meuer, U.TZN Entwicklungszentrum Unterlüß
Datum:1999
Status:veröffentlicht
Stichwörter:aerodynamics, hypersonics, Navier-Stokes, internal flow, boundary layers, shock-shock interactions, boundary layer-shock interactions
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L ST - Starrflüglertechnologien
DLR - Teilgebiet (Projekt, Vorhaben):L - Militärische Technologien
Standort: Köln-Porz , Braunschweig , Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Institut für Entwurfsaerodynamik
Hinterlegt von: Claudia Grant
Hinterlegt am:16 Sep 2005
Letzte Änderung:14 Jan 2010 20:02

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.