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Shockwave boundary layer interaction of laminar/transitional flow past a sharp fin

Ecker, Tobias and Martinez Schramm, Jan and Schmidt, Leni and Surujhlal, Divek and Wagner, Alexander (2022) Shockwave boundary layer interaction of laminar/transitional flow past a sharp fin. In: 2nd International Conference on High-Speed Vehicle Science & Technology HiSST 2022, pp. 1-13. CEAS. 2nd International Conference on High-Speed Vehicle Science & Technology HiSST 2022, 2022-09-11 - 2022-09-15, Brügge, Belgien.

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Official URL: https://atpi.eventsair.com/QuickEventWebsitePortal/hisst-2020/website

Abstract

Ever since NASA’s X-plane program had developed demonstrators (X-15) pushing into the hypersonic high altitude flight regimes, the effects of shock impingement and interference on local aerodynamic heating have been a key issue for the design of hypersonic flight concepts. Currently DLR is involved in several flight experiments, one of which is STORT which focuses on aerothermal loads on hot structures. One essential structure flown on the STORT flight experiment is the fins experiment on the third stage. The fins were investigated both on the vehicle, in windtunnels in Cologne and Göttingen but also numerically. For the windtunnel experiment in the HEG (High Enthalpy Shock Tunnel Göttingen) the object of investigation is a plate mounted fin which scales 1:2 to the flight hardware. The fin-induced shock boundary layer interaction (SWBLI) on the plate leads to increased thermal loads. The heat flux on the flat plate and fin are investigated using temperature sensitive paints (TSP). For the current study the flow on the plate and around the fin is studied for two HEG freestream conditions at Mach 7.4 using RANS CFD. CFD calculations at both 0 deg AoF and 15 deg AoF were performed and compared for flow topology and turbulence model influence. For 2 configurations first preliminary comparisons between experimental and CFD data were conducted. While the XIII freestream condition compares well between experiment and CFD, the XV freestream condition which shows clear signs of transitional flow exhibits rather complex physical phenomena which requirevfurther investigation, both experimentally and numerically.

Item URL in elib:https://elib.dlr.de/188440/
Document Type:Conference or Workshop Item (Speech)
Title:Shockwave boundary layer interaction of laminar/transitional flow past a sharp fin
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Ecker, TobiasUNSPECIFIEDhttps://orcid.org/0000-0001-7134-1185UNSPECIFIED
Martinez Schramm, JanUNSPECIFIEDhttps://orcid.org/0000-0002-8891-6253UNSPECIFIED
Schmidt, LeniUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Surujhlal, DivekUNSPECIFIEDhttps://orcid.org/0000-0002-0349-3328UNSPECIFIED
Wagner, AlexanderUNSPECIFIEDhttps://orcid.org/0000-0002-9700-1522UNSPECIFIED
Date:11 September 2022
Journal or Publication Title:2nd International Conference on High-Speed Vehicle Science & Technology HiSST 2022
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-13
Publisher:CEAS
Status:Published
Keywords:SWBLI, shock, fin, heat flux, CFD
Event Title:2nd International Conference on High-Speed Vehicle Science & Technology HiSST 2022
Event Location:Brügge, Belgien
Event Type:international Conference
Event Start Date:11 September 2022
Event End Date:15 September 2022
Organizer:ESA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Key technologies for high-energy return flights of the carrier stages (STORT)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Deposited By: Ecker, Tobias
Deposited On:21 Oct 2022 18:25
Last Modified:24 Apr 2024 20:49

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