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Measurements in a Turbulent Channel Flow by Means of an LDV Profile Sensor

Pasch, Saskia ORCID iD icon 1; Leister, Robin ORCID iD icon 1; Gatti, Davide 1; Örlü, Ramis; Frohnapfel, Bettina ORCID iD icon 1; Kriegseis, Jochen ORCID iD icon 1
1 Institut für Strömungsmechanik (ISTM), Karlsruher Institut für Technologie (KIT)

Abstract:

Spatially and temporally resolved velocity measurements in wall-bounded turbulent flows remain a challenge. Contrary to classical laser Doppler velocimetry (LDV) measurements, the laser Doppler velocity profile sensor (LDV-PS) allows the combined measurement of tracer particle position and velocity, which makes it a promising tool. To assess its feasibility a commercial LDV-PS is employed in a turbulent channel flow at $Re_τ$=350. Additionally, the measurement and signal-processing accuracies of velocity and location are evaluated for various tracer-object sizes and velocities. On this basis, the turbulent channel flow measurements are evaluated and compared to reference data from direct numerical simulations. Thus, potentials of the LDV-PS are investigated for different regions of the flow and various data processing routines as well as the experimental practice are discussed from an application perspective.


Verlagsausgabe §
DOI: 10.5445/IR/1000162427
Veröffentlicht am 22.09.2023
Originalveröffentlichung
DOI: 10.1007/s10494-023-00469-4
Web of Science
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Strömungsmechanik (ISTM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 1386-6184, 0365-7132, 0003-6994, 1573-1987, 2212-0939
KITopen-ID: 1000162427
Erschienen in Flow, Turbulence and Combustion
Verlag Springer-Verlag
Vorab online veröffentlicht am 11.09.2023
Schlagwörter LDV profile sensor, Near-wall measurements, Turbulent channel flow
Nachgewiesen in Dimensions
Web of Science
Scopus
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