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Entwicklung einer zeitaufgelösten quantitativen Oberflächentemperaturmessmethode und deren Anwendung in Kurzzeitwindkanalmessungen

Risius, Steffen (2018) Entwicklung einer zeitaufgelösten quantitativen Oberflächentemperaturmessmethode und deren Anwendung in Kurzzeitwindkanalmessungen. [Other]

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Abstract

A time-resolved quantitative temperature-sensitive paint (TSP) measurement technique is presented and used to measure temperatures at subsonic and up to hypersonic flow velocities in two different short duration wind tunnels. Based on this measurement technique it was possible to calculate the heat transfer into a wedge model in the High Enthalpy Shock Tunnel Göttingen (HEG). Furthermore, the measurement technique was developed further to determine the location of laminar-turbulent transition on the two-dimensional wind tunnel model PaLASTra, which offers a quasi-uniform streamwise pressure gradient, in the Cryogenic Ludwieg-Tube Göttingen (DNW-KRG) with temporal and spatial accuracy that had not been reached before. The quantitative temperature results obtained from TSP measurements allowed the systematic analysis of unit Reynolds number, Mach number and pressure gradient effects on laminar-turbulent transition at flow speeds from M = 0.35 to 0.77.

Item URL in elib:https://elib.dlr.de/121795/
Document Type:Other
Additional Information:DISSERTATION zur Erlangung des mathematisch-naturwissenschaftlichen Doktorgrades „Doctor rerum naturalium“ /der Georg-August-Universität Göttingen im Promotionsprogramm ProPhys der Georg-August University School of Science (GAUSS)
Title:Entwicklung einer zeitaufgelösten quantitativen Oberflächentemperaturmessmethode und deren Anwendung in Kurzzeitwindkanalmessungen
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Risius, Steffensteffen.risius (at) dlr.dehttps://orcid.org/0000-0002-5530-9609
Date:4 July 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Series Name:Dissertations-Vortrag
Status:Published
Keywords:boundary layer; COCO; compressibility effect; critical N-factor; Cryogenic Ludwieg-Tube Göttingen (DNW-KRG); freestream pressure fluctuations; heat transfer; High Enthalpy Shock Tunnel (HEG); hypersonic flow; laminar-turbulent transition; LILO; linear stability analysis; Mach number effect; PaLASTra; temperature distribution; temperature-sensitive paint (TSP); Tollmien-Schlichting; transonic wind tunnel
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Experimental Methods, GO
Deposited By: Micknaus, Ilka
Deposited On:21 Nov 2018 15:46
Last Modified:21 Nov 2018 15:46

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