Validation of sub-millimeter resolution pressure measurement on free flight model mach 1.5

Joseph P. Gonzales, Daiki Kurihara, Hirotaka Sakaue, Aleksandar Jemcov, Hiroki Nagai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationAIAA Scitech 2021 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Pages1-9
Number of pages9
ISBN (Print)9781624106095
Publication statusPublished - 2021
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021 - Virtual, Online
Duration: 2021 Jan 112021 Jan 15

Publication series

NameAIAA Scitech 2021 Forum

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021
CityVirtual, Online
Period21/1/1121/1/15

ASJC Scopus subject areas

  • Aerospace Engineering

Fingerprint Dive into the research topics of 'Validation of sub-millimeter resolution pressure measurement on free flight model mach 1.5'. Together they form a unique fingerprint.

Cite this