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Simulation of streamwise vortices at the flaps of reentry vehicles

Lüdeke, H. and Radespiel, R. and Schülein, E. (2004) Simulation of streamwise vortices at the flaps of reentry vehicles. Aerospace Science and Technology, 8 (8), pp. 703-714.

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Abstract

The present study investigates separated flows in the flap region of the X-38 re-entry demonstrator with respect to the heat loads downstream reattachment induced by streamwise vortices. In a first step generic numerical flow simulations of turbulent ramp configurations with artificially induced vortex disturbances are compared with wind tunnel data of the Ludwieg tube facility in Göttingen (RWG). The results allow insight into the perturbed flow field, the associated flow topology and the influence of different flow parameters that affect the perturbations. For numerical resolution of streamwise vortices in the boundary layer of re-entry vehicles local grids are generated around the flaps of the X-38 vehicle. Extensive studies of arranging and refining the local grids demonstrate good grid convergence. For laminar cases and cases with fixed transition vortex effects on the heat transfer are observed with and without artificial vortex excitation.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2005,
Title:Simulation of streamwise vortices at the flaps of reentry vehicles
Authors:
AuthorsInstitution or Email of Authors
Lüdeke, H.UNSPECIFIED
Radespiel, R.TU Braunschweig
Schülein, E.UNSPECIFIED
Date:2004
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:8
Page Range:pp. 703-714
Status:Published
Keywords:Görtler vortices, Re-entry vehicles, Flaps, Ramp flow, Aerothermodynamics, Supersonic flow
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 19:47

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