Effect of internal energy excitation on supersonic air flow

Graham V. Candler, J. Daniel Kelley

Research output: Contribution to conferencePaper

1 Scopus citations

Abstract

The effect of upstream vibrational energy excitation on supersonic blunt-body drag is studied using computational fluid dynamics. The simulations model two sets of experiments where a discharge excites the air upstream of a sphere. It is assumed that the discharge weakly dissociates the oxygen and excites the vibrational energy of the diatomics. The computations show that the bow shock standoff distance increases, and the drag on the sphere is found to decrease by as much as 26%. The results are in general agreement with the experiments, indicating that vibrational energy excitation may explain the observed behavior.

Original languageEnglish (US)
Pages1-9
Number of pages9
DOIs
StatePublished - Jan 1 1999
Event9th International Space Planes and Hypersonic Systems and Technologies Conference, 1999 - Norfolk, United States
Duration: Nov 1 1999Nov 4 1999

Other

Other9th International Space Planes and Hypersonic Systems and Technologies Conference, 1999
CountryUnited States
CityNorfolk
Period11/1/9911/4/99

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    Candler, G. V., & Kelley, J. D. (1999). Effect of internal energy excitation on supersonic air flow. 1-9. Paper presented at 9th International Space Planes and Hypersonic Systems and Technologies Conference, 1999, Norfolk, United States. https://doi.org/10.2514/6.1999-4964