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Computation of Görtler Vortices in Separated Hypersonic Flows

Lüdeke, H. (2000) Computation of Görtler Vortices in Separated Hypersonic Flows. ICCFD, Kyoto (ja), 10.-14.07.2000.

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Abstract

In concave boundary layers as well as in separated flows counter-rotating streamwise vortices appear if certain flow conditions are satisfied. These socalled Görtler vortices lead to significant transversal heat flux fluctuations in hypersonic flows. Until now numerical simulations of such instabilities have been carried out only for simplified geometries. Nevertheless, fully three-dimensional computations are of special interest for hypersonic re-entry vehicles especially on deflected control surfaces (flaps). For the present investigations a lifting body vehicle is chosen to show the capability of Navier-Stokes codes to simulate the influences of Görtler vortices at Mach 6 and Re = 3.1 Mio. Resolution of laminar vortices is possible by generation of local grids in the flap region with extensive spanwise grid refinement.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2001,
Title:Computation of Görtler Vortices in Separated Hypersonic Flows
Authors:
AuthorsInstitution or Email of Authors
Lüdeke, H.UNSPECIFIED
Date:2000
Status:Published
Keywords:X38, Görtler vortices, hypersonics, flaps
Event Title:ICCFD, Kyoto (ja), 10.-14.07.2000
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 > Institut für Entwurfsaerodynamik
Deposited By: Claudia Grant
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 20:15

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