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Numerical and experimental investigation of the 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 and Horchler, Tim (2023) Numerical and experimental investigation of the shockwave boundary layer interaction of laminar/transitional flow past a sharp fin. In: 10th EUCASS – 9th CEAS 2023, pp. 1-16. 10th EUCASS – 9th CEAS 2023, 2023-07-09 - 2023-07-13, Lausanne, Schweiz. doi: 10.13009/EUCASS2023-699.

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Official URL: https://www.eucass.eu/doi/EUCASS2023-699.pdf

Abstract

The effects of shock impingement and interference on local aerodynamic heating have been and still are a key issue for the design of hypersonic flight vehicles[1]. At this time DLR is involved in continuous series of sounding rocket flight experiments studying hot structures. One of these experiment is the STORT flight experiments[2]. One essential flown experiment is the fins experiment on the third stage. The fins were investigated both on the vehicle, in windtunnels in Cologne and Gottingen but also numerically. For the ¨ windtunnel experiment in the HEG (High Enthalpy Shock Tunnel Gottingen) the object of investigation is a ¨ plate mounted fin which scales 1:2 to the flight hardware. The fin induced shock boundary layer interaction (SBLI) on the plate leads to increased thermal loads with strong thermal gradients. The heat flux on the flat plate determined by using temperature sensitive paints (TSP[3]). In a previous study first experimental and numerical results for a sharp fin on a flat plate for two freestream HEG conditions at Mach 7.4 were presented [4]. CFD calculations at both 0 deg AoF and 15 deg AoF were performed and compared for flow topology and turbulence model influence. While the XIII condition compared well between experiment and CFD, the XV condition which showed clear signs of transitional flow exhibits rather complex physical phenomena which require further investigation, both experimentally and numerically. In the current study we extend the investigation to the other conditions/configurations studied and supplement the studies using RANS turbulence modelling by using Improved Detached eddy simulation(IDDES), as well as thermal and chemical non-equilibrium for select cases in order to gain a better understanding of the complex flow field found in the experiment.

Item URL in elib:https://elib.dlr.de/195894/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical and experimental investigation of the 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
Horchler, TimUNSPECIFIEDhttps://orcid.org/0000-0002-8439-8786UNSPECIFIED
Date:12 July 2023
Journal or Publication Title:10th EUCASS – 9th CEAS 2023
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI:10.13009/EUCASS2023-699
Page Range:pp. 1-16
Editors:
EditorsEmailEditor's ORCID iDORCID Put Code
UNSPECIFIEDEUCASSUNSPECIFIEDUNSPECIFIED
UNSPECIFIEDCEASUNSPECIFIEDUNSPECIFIED
Status:Published
Keywords:SBLI, shock, thermal loads
Event Title:10th EUCASS – 9th CEAS 2023
Event Location:Lausanne, Schweiz
Event Type:international Conference
Event Start Date:9 July 2023
Event End Date:13 July 2023
Organizer:EUCASS, CEAS
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:28 Jul 2023 11:47
Last Modified:24 Apr 2024 20:56

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