Abstract
A theoretical and experimental study has been made of dense gas effects in the VKI Longshot M = 15-27 high Reynolds number tunnel. Longshot differs from a conventional gun tunnel in that the nitrogen test gas compressed by a heavy piston is trapped in a reservoir at the end of the barrel at peak pressure and temperature (typically 30,000 psi at 2150 °K) by the closing of a system of check valves as the piston rebounds. The supply conditions decay gradually during the 25 msec running time as the gas flows through the nozzle from the finite reservoir volume. Theoretical analyses, which account for real gas effects due to intermolecular forces and vibrational excitation, are presented for the free-piston cycle, the decay of reservoir conditions, and the flow through the hypersonic nozzle. Experimental data are found to agree well with predictions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
