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Shock-wave control by permeable wake generators

Schülein, Erich (2010) Shock-wave control by permeable wake generators. 5th AIAA Flow Control Conference, 28. Jun. - 01. Jul. 2010 , Chicago, Illinois, USA. ISBN 978-1-60086-745-3 .

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Official URL: http://pdf.aiaa.org/preview/2010/CDReadyMFD10_2119/PV2010_4977.pdf


Feasibility experiments for shock-wave control by small permeable wake generators were performed in the supersonic Ludwieg Tube Facility at DLR Göttingen. In order to improve the shock-control effectiveness novel micro-perforated or porous PWG devices shaped similar to a wind-cone are investigated in the present work. In the first part, the working principle and the induced wake-flow peculiarities are discussed. A simplified gas-dynamic model of the flow around an isolated permeable device is applied for wake-flow calculation at different generator geometries and porosities. The preliminary validation of this model was made by the cross-sectional wake extension obtained in the wind-tunnel tests. In the main part, effects of PWG-devices attached to a rod in front of a blunt body on its drag and heating rates at Mach numbers of 2, 3 and 5 are analyzed. Flow-field shadowgrams, drag-force and heat-flux measurements are used to quantify these effects. The results show clear advantages of the investigated permeable flow-control devices in comparison to the solid aero-discs and aero-spikes.

Item URL in elib:https://elib.dlr.de/60455/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Shock-wave control by permeable wake generators
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schülein, Ericherich.schuelein (at) dlr.deUNSPECIFIED
Date:14 June 2010
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-21
Series Name:DVD-ROM Conference Proceedings, Online
Keywords:Flow control, transsonic, supersonic, shock wave, experiment
Event Title:5th AIAA Flow Control Conference
Event Location:Chicago, Illinois, USA
Event Type:international Conference
Event Dates:28. Jun. - 01. Jul. 2010
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > High Speed Configurations
Deposited By: Schülein, Dr.rer.nat. Erich
Deposited On:16 Aug 2010 12:48
Last Modified:16 Aug 2010 12:48

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