Flow establishment behind blunt bodies at hypersonic speeds in a shock tunnel

G. Park; R. Hruschka; S. L. Gai; A. J. Neely

doi:10.1117/12.822751

10 February 2009 Flow establishment behind blunt bodies at hypersonic speeds in a shock tunnel

G. Park, R. Hruschka, S. L. Gai, A. J. Neely

Proceedings Volume 7126, 28th International Congress on High-Speed Imaging and Photonics; 71260I (2009) https://doi.org/10.1117/12.822751
Event: 28th International Congress on High-Speed Imaging and Photonics, 2008, Canberra, Australia

Abstract

An investigation of flow establishment behind two blunt bodies, a circular cylinder and a 45° half-angle blunted-cone was conducted. Unlike previous studies which relied solely on surface measurements, the present study combines these with unique high-speed visualisation to image the establishment of the flow structure in the base region. Test flows were generated using a free-piston shock tunnel at a nominal Mach number of 10. The freestream unit Reynolds numbers considered were 3.02x10⁵/m and 1.17x10⁶/m at total enthalpies of 13.3⁵MJ/kg and 3.94MJ/kg, respectively. In general, the experiments showed that it takes longer to establish steady heat flux than pressure. The circular cylinder data showed that the near wake had a slight Reynolds number effect, where the size of the near wake was smaller for the high enthalpy flow condition. The blunted-cone data showed that the heat flux and pressures reached steady states in the near wake at similar times for both high and low enthalpy conditions.

Citation Download Citation

G. Park, R. Hruschka, S. L. Gai, and A. J. Neely "Flow establishment behind blunt bodies at hypersonic speeds in a shock tunnel", Proc. SPIE 7126, 28th International Congress on High-Speed Imaging and Photonics, 71260I (10 February 2009); https://doi.org/10.1117/12.822751

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available