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Boundary-layer stabilization by an ultrasonically absorptive material on a cone in hypersonic flow: numerical investigations

Wartemann, Viola and Wagner, Alexander and Giese, Tobias and Eggers, Thino and Hannemann, Klaus (2014) Boundary-layer stabilization by an ultrasonically absorptive material on a cone in hypersonic flow: numerical investigations. CEAS Space Journal, 6 (1), pp. 13-22. Springer. DOI: 10.1007/s12567-013-0053-6 ISSN 1868-2502

Full text not available from this repository.

Official URL: http://link.springer.com/article/10.1007%2Fs12567-013-0053-6

Abstract

The damping of acoustic second mode instabilities by passive porous surfaces is investigated numerically and compared with experiments for different hypersonic boundary-layer flows. The used geometry is a blunt 7° half-angle cone model with exchangeable nose. The cone surface consists partly of an ultrasonically absorptive material, which has a natural, random porosity. For the analyses of the second modes, the DLR stability code NOLOT, NOnLocal Transition analysis code, is used. The influence of the nose radius and the unit Reynolds number on the second modes is investigated using a smooth surface. These results of the smooth surface are compared with those of the porous surface to study the damping effect on the second modes and the transition shift. The numerical results are compared with wind tunnel measurements, which were performed in the DLR High Enthalpy Shock Tunnel Göttingen.

Item URL in elib:https://elib.dlr.de/88434/
Document Type:Article
Additional Information:Published online: 19 November 2013
Title:Boundary-layer stabilization by an ultrasonically absorptive material on a cone in hypersonic flow: numerical investigations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wartemann, ViolaViola.Wartemann (at) dlr.deUNSPECIFIED
Wagner, AlexanderAlexander.Wagner (at) dlr.deUNSPECIFIED
Giese, Tobiastobias.giese (at) dlr.deUNSPECIFIED
Eggers, Thinothino.eggers (at) dlr.deUNSPECIFIED
Hannemann, Klausklaus.hannemann (at) dlr.deUNSPECIFIED
Date:March 2014
Journal or Publication Title:CEAS Space Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:6
DOI :10.1007/s12567-013-0053-6
Page Range:pp. 13-22
Publisher:Springer
ISSN:1868-2502
Status:Published
Keywords:Hypersonic boundary-layer stabilization, Cone experiments, Ultrasonically absorptive material, Linear stability theory, High enthalpy shock tunnel Göttingen
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Shefex III
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Wartemann, Viola
Deposited On:12 Mar 2014 13:44
Last Modified:14 Dec 2019 04:27

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