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Investigation of Streamwise Vortices at Deflected Flaps of Re-entry Vehicles

Lüdeke, H. and Schülein, E. (2004) Investigation of Streamwise Vortices at Deflected Flaps of Re-entry Vehicles. RTO Conference "Enhancement of NATO Military Flight Vehicle Performance by Management of Interacting Boundary Layer Transition and Separation" , Prag (cz), 04.-08.10.2004.

Full text not available from this repository.

Abstract

Purpose of the present investigation is to study the separated flow field in the flap region of hypersonic re-entry vehicles, with respect to the heat loads induced by streamwise vortices in the transitional regime. As a first step generic turbulent ramp configurations with artificially induced vortex disturbances are simulated by the structured Navier-Stokes solver CEVCATS-N and compared with wind tunnel data of the Ludwieg tube facility in Göttingen (RWG). The results allow a detailed insight into the perturbed flow field, the associated flow topology and the influence of parameter variations for the perturbations. To resolve streamwise vortices at the control surfaces of re-entry vehicles local grids are generated in this region. Extensive studies of grid refinement show very good convergence. Streamwise vortices are simulated for spanwise refined grids with a highly resolved boundary layer. For laminar and fixed transition cases vortex influences are simulated successfully with and without artificial vortex excitation.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Investigation of Streamwise Vortices at Deflected Flaps of Re-entry Vehicles
Authors:
AuthorsInstitution or Email of Authors
Lüdeke, H.UNSPECIFIED
Schülein, E.UNSPECIFIED
Date:2004
Status:Published
Keywords:Re-entry, Görtler vortices, Hypersonic
Event Title:RTO Conference "Enhancement of NATO Military Flight Vehicle Performance by Management of Interacting Boundary Layer Transition and Separation" , Prag (cz), 04.-08.10.2004
Organizer:RTO
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Grundlagen Raumtransport - Anlagen und Messtechnik (old)
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:48

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