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Ludwieg-Tube Experiments on the Effects of Laminar-Turbulent Transition on the SWBLI at Mach 6

Schülein, Erich and Wagner, Alexander (2012) Ludwieg-Tube Experiments on the Effects of Laminar-Turbulent Transition on the SWBLI at Mach 6. DLR-Interner Bericht. DLR-IB 224-2011 A 64, 72 S.

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Abstract

This report presents results of experimental investigations on the nominally 2-D impinging shock-wave interaction, induced by a 4 degree shock generator, with the transitional boundary layer developing on a flat plate at various unit Reynolds numbers and Mach 6 flow conditions. This investigations were conducted as the part of the ESA-project "Laminar to Turbulent Transition in Hypersonic Flows" to characterize the transition- and intermittency-detection techniques. Novel types of gages for high-frequency time-resolved heat flux (ALTP-gages) and pressure (PCBgages) measurements as well as the conventional thin-film and thermocouple heat-flux sensors were tested for this purpose and checked for plausibility by comparison with results of the quantitative infrared-thermography and high-speed shadowgraphy well-established for transition detection in quasi-steady flows. The advantages and limitations of each sensor type are discussed here.

Document Type:Monograph (DLR-Interner Bericht)
Title:Ludwieg-Tube Experiments on the Effects of Laminar-Turbulent Transition on the SWBLI at Mach 6
Authors:
AuthorsInstitution or Email of Authors
Schülein, ErichUNSPECIFIED
Wagner, AlexanderUNSPECIFIED
Date:22 June 2012
Number of Pages:72
Status:Published
Keywords:Transition, Experiment, Heat Flux, Infrared Thermography, Hypersonic
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Institute of Aerodynamics and Flow Technology > High Speed Configurations
Deposited By: Dr.rer.nat. Erich Schülein
Deposited On:20 Nov 2012 13:41
Last Modified:20 Nov 2012 13:41

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