Computations of measured pitot-probe spectra using angled freestream disturbances and comparisons to experiments

Ross S. Chaudhry, Graham V Candler, Kathryn A. Gray, Steven P. Schneider

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

Abstract

Laminar-turbulent transition of hypersonic flows is dependent on the freestream disturbance environment, so wind tunnels must be characterized. The transfer function, defined as the relationship between freestream acoustic disturbances and pressure spectra measured with pitot probes, is computed using direct numerical simulation for several incident angles of freestream acoustic disturbances. The observed behavior is found to depend significantly on the incident angle. A framework for comparing simulation to experiment is presented. Several pitot-probe geometries were used to measure pressure spectra in the Purdue BAM6QT facility. Results for some geometries match reasonably well with computations, although there is significant scatter.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
StatePublished - Jan 1 2019
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: Jan 7 2019Jan 11 2019

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
CountryUnited States
CitySan Diego
Period1/7/191/11/19

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  • Cite this

    Chaudhry, R. S., Candler, G. V., Gray, K. A., & Schneider, S. P. (2019). Computations of measured pitot-probe spectra using angled freestream disturbances and comparisons to experiments. In AIAA Scitech 2019 Forum (AIAA Scitech 2019 Forum). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2019-2149