TY - GEN
T1 - Validation of sub-millimeter resolution pressure measurement on free flight model mach 1.5
AU - Gonzales, Joseph P.
AU - Kurihara, Daiki
AU - Sakaue, Hirotaka
AU - Jemcov, Aleksandar
AU - Nagai, Hiroki
N1 - Funding Information:
This project was supported by the Discretionary Collaborative Research fund, J17I101, J18I101 and J19105 at the Institute of Fluid Science (IFS) at Tohoku University, and the Asia Research Collaboration Grant from Notre Dame International at the University of Notre Dame. The authors would also like to acknowledge Photron for their high-speed color camera support.
Publisher Copyright:
© 2021, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2021
Y1 - 2021
N2 - A motion-capturing pressure sensitive paint (PSP) system is used to collect transient surface pressure data on a 30mm diameter sphere model in free flight at Mach 1.5. The motion-capturing PSP is able to remove effects due to variations in illumination during free flight, drastically reducing error in free-flight pressure measurements. Luminescent images of the model are collected at 100kHz with an exposure time of 3.75μs using a high-speed camera. The sphere is fully in view for 7 frames, or 70μs. Transient data from each frame is collected to produce a free flight pressure map on the surface. Validation of the measurement is performed using a time-averaged transient computational fluid dynamics (CFD) simulation in Ansys Fluent. The mesh consisted of 6.96 million cells and far field pressure boundary conditions are used. The PSP measurement agrees with the CFD simulation both qualitatively and through a trace across the equator of the sphere.
AB - A motion-capturing pressure sensitive paint (PSP) system is used to collect transient surface pressure data on a 30mm diameter sphere model in free flight at Mach 1.5. The motion-capturing PSP is able to remove effects due to variations in illumination during free flight, drastically reducing error in free-flight pressure measurements. Luminescent images of the model are collected at 100kHz with an exposure time of 3.75μs using a high-speed camera. The sphere is fully in view for 7 frames, or 70μs. Transient data from each frame is collected to produce a free flight pressure map on the surface. Validation of the measurement is performed using a time-averaged transient computational fluid dynamics (CFD) simulation in Ansys Fluent. The mesh consisted of 6.96 million cells and far field pressure boundary conditions are used. The PSP measurement agrees with the CFD simulation both qualitatively and through a trace across the equator of the sphere.
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M3 - Conference contribution
AN - SCOPUS:85100305194
SN - 9781624106095
T3 - AIAA Scitech 2021 Forum
SP - 1
EP - 9
BT - AIAA Scitech 2021 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
Y2 - 11 January 2021 through 15 January 2021
ER -