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Potential of localized flow heating for wave drag reduction

Schülein, Erich and Bornhöft, Erik (2011) Potential of localized flow heating for wave drag reduction. 28th International Symposium on Shock Waves (ISSW28), 17. - 22. July 2011, Manchester, UK.

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Abstract

Effects of steady energy addition (EA) into the Mach 3 supersonic flow upstream of conically-nosed and spherically-blunted bodies were investigated in this study numerically and experimentally. Low-voltage DC-arc discharge was applied to explore energy addition effects in the Ludwieg-Tube Facility by means of drag force measurements and shadowgraph flow visualizations. Numerical simulations were performed by solving the Reynolds-averaged Navier-Stokes equations with the DLR-TAU-Code. Numerical and experimental results demonstrate in good agreement that the optimal power effectiveness appears at a heating power just enough to induce a full-scale recirculation bubble ahead of the blunt body. They reveal that at a higher flow density the effectiveness of EA becomes larger as long as the heating ratio remains over-critical.

Item URL in elib:https://elib.dlr.de/69240/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Potential of localized flow heating for wave drag reduction
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schülein, Ericherich.schuelein (at) dlr.deUNSPECIFIED
Bornhöft, ErikUNSPECIFIEDUNSPECIFIED
Date:18 July 2011
Refereed publication:No
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-6
Series Name:Shock Waves
Status:Published
Keywords:Flow control, shock wave, experiment, CFD, DC-arc
Event Title:28th International Symposium on Shock Waves (ISSW28)
Event Location:Manchester, UK
Event Type:international Conference
Event Dates:17. - 22. July 2011
Organizer:International Shock Wave Institute
HGF - Research field:Aeronautics, Space and Transport
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:22 Sep 2011 14:40
Last Modified:02 Dec 2011 08:39

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