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Recompression of Nonequilibrium Flow in the Wake of a Blunted Cone

Kastell, D. and Hannemann, K. and Eitelberg, G. (1997) Recompression of Nonequilibrium Flow in the Wake of a Blunted Cone. In: 20th International Symposium on Shock Waves, Editors: Sturtevant, B., Shepherd, J.E.; Hornung, H.G., World Scientific, 1996, Vol. 1, pp. 221-226. Copyright 1996 by World Scientific Publishing Co. Pte. Ltd., USA.

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Abstract

The entry of a planetary probe, which is a 140 Grad total-included- angle blunted cone with a spherical nose, rounded edges, and a cylindrical afterbody is significantly influenced by nonequilibrium flow effects. Therefore its aerodynamic characteristics have been investigated in the continuum flow of a High Enthaly Shock Tunnelat the DLR in Goettingen (HEG). Calculations with a Thin-Layer Navier- Stokes code which is capable of simulating chemical and thermal nonequilibrium flows have been carried out and compared tomeasured heat transfer and pressure distributions. Depending on the operating condition of the tunnel, up to 63% of the stagnation heattransfer rate was reached on the front body corner junction and upto 13% was measured on the afterbody sting due to the reattachmentof the separated shear layer. The numerical prediction on the forebody compares well with the experimental data, whereas the maximum heat loads on the sting were underestimated by the calculations.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1996,
Title:Recompression of Nonequilibrium Flow in the Wake of a Blunted Cone
Authors:
AuthorsInstitution or Email of Authors
Kastell, D.UNSPECIFIED
Hannemann, K.UNSPECIFIED
Eitelberg, G.UNSPECIFIED
Date:1997
Journal or Publication Title:20th International Symposium on Shock Waves, Editors: Sturtevant, B., Shepherd, J.E.; Hornung, H.G., World Scientific, 1996
Volume:Vol. 1
Page Range:pp. 221-226
Publisher:Copyright 1996 by World Scientific Publishing Co. Pte. Ltd., USA
Status:Published
Keywords:HEG, nonequilibrium flow, hypersonic, experiment, numerical simulation, blunted cone, wake flow, shear layer
HGF - Research field:UNSPECIFIED
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:UNSPECIFIED
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Experimentelle Strömungsmechanik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:09

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