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Investigation of Image-based Lifetime PSP Measurements with Sinusoidal Excitation Light

Yorita, Daisuke and Henne, Ulrich and Klein, Christian and Munekata, Mizue and Holst, Gerhard A. (2019) Investigation of Image-based Lifetime PSP Measurements with Sinusoidal Excitation Light. In: AIAA Scitech Forum, 2019 (0023), pp. 1-9. AIAA. AIAA Science and Technology Forum AIAA SciTech 2019, 07.-11. Jan. 2019, San Diego, California, USA. DOI: 10.2514/6.2019-0023 ISBN 978-162410578-4

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Official URL: https://doi.org/10.2514/6.2019-0023


The applicability of frequency-domain fluorescence lifetime imaging (FLIM) with a newly developed CMOS camera sensor (pco.flim) to Pressure-Sensitive Paint (PSP) measurements in wind tunnel tests was investigated. Two lifetime parameters, the phase angle and demodulation index, can be used as a function of pressure in FLIM technique. First, the characteristics of FLIM-PSP technique were examined in calibration tests. The two lifetime parameters, a phase shift and a modulation index, show different sensitivity to pressure and temperature. This indicates a potential of simultaneous pressure and temperature measurement of the FLIM-PSP technique. Next, the FLIM-PSP technique is demonstrated in a transonic wind tunnel using a delta-wing model. The obtained PSP results successfully visualize the complex pressure distribution on the model surface and the quantitative agreement with conventional pressure tap data is good.

Item URL in elib:https://elib.dlr.de/126593/
Document Type:Conference or Workshop Item (Speech)
Additional Information:AIAA-2019-0023
Title:Investigation of Image-based Lifetime PSP Measurements with Sinusoidal Excitation Light
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Yorita, Daisukedaisuke.yorita (at) dlr.deUNSPECIFIED
Henne, Ulrichulrich.henne (at) dlr.deUNSPECIFIED
Klein, Christianchristian.klein (at) dlr.dehttps://orcid.org/0000-0001-7592-6922
Munekata, MizueDepartment of Mechanical and Mathematical Engineering, Kumamoto UniversityUNSPECIFIED
Date:January 2019
Journal or Publication Title:AIAA Scitech Forum, 2019
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2514/6.2019-0023
Page Range:pp. 1-9
Series Name:Conference Proceedings online
Keywords:Pressure-Sensitive Paint, Frequency Domain Lifetime, Delta Wing
Event Title:AIAA Science and Technology Forum AIAA SciTech 2019
Event Location:San Diego, California, USA
Event Type:international Conference
Event Dates:07.-11. Jan. 2019
Institution:Deutsches Zentrum für Luft- und Raumfahrt e.V.
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:04 Mar 2019 03:40
Last Modified:02 Aug 2019 13:20

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