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Modelling of Hypersonic Flow Phenomena

Longo, J.M.A. (2004) Modelling of Hypersonic Flow Phenomena. RTO/AVT/VKI Lecture Series: "Critical Technologies for Hypersonic Vehicle Development Technology", Brüssel (b), 10.-14.05.2004.

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Kurzfassung

This study focuses on the numerical simulation of supersonic flows around a missile with lattice wings. In order to reduce the computational cost for such a configuration, the actuator disc concept is chosen to model the effects of grid fins. This approach is coupled with a Navier-Stokes solver in order to predict the forces and moments on a complete vehicle. The method consists in replacing the lattice controls by artificial boundary conditions where the forces involved by the grid fins are applied. These forces are interpolated from an experimental database. Numerical simulations are performed for laminar and turbulent flows for several Mach numbers and angles of attack. The results are compared to experimental data in order to validate the method. The comparisons reveal some discrepancies which are mainly due to the turbulence effects and to the database from which the forces resulting from the lattice wings are interpolated. The method allows the prediction of the forces applied on the vehicle and therefore an estimate of its aerodynamic performances. The computations validate the approach and show its potential as a tool for vehicle design.

Dokumentart:Konferenzbeitrag (Paper)
Zusätzliche Informationen: LIDO-Berichtsjahr=2005,
Titel:Modelling of Hypersonic Flow Phenomena
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Longo, J.M.A.NICHT SPEZIFIZIERT
Datum:2004
Status:veröffentlicht
Stichwörter:Lattice wing, CFD, Actuator disc, Supersonic missile, Experimental data base
Veranstaltungstitel:RTO/AVT/VKI Lecture Series: "Critical Technologies for Hypersonic Vehicle Development Technology", Brüssel (b), 10.-14.05.2004
Veranstalter :VKI
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 , Braunschweig , Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik
Hinterlegt von: Claudia Grant
Hinterlegt am:31 Jan 2006
Letzte Änderung:14 Jan 2010 19:48

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