Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-18T18:31:43.595Z Has data issue: false hasContentIssue false
  • English
  • Français

Shock detachment from cones in a relaxing gas

Published online by Cambridge University Press:  19 April 2006

H. G. Hornung  and
A. F. P. Houwing
H. G. Hornung
Affiliation:
Department of Physics, Australian National University, Canberra, Australia Present address: DFVLR-AVA, 34 Göttingen, Bunsenstr. 10, W. Germany.
A. F. P. Houwing
Affiliation:
Department of Physics, Australian National University, Canberra, Australia
Get access Rights & Permissions [Opens in a new window]

Abstract

Measurements of the shock stand-off distance on cones of various base diameters in carbon dioxide and nitrogen flows with dissociative relaxation show that the detachment process occurs more gradually with relaxation than in a perfect gas, as the cone semi-angle is increased. This is in agreement with a prediction which is made on the basis of the behaviour of the sonic surface in the flow field. The phenomenon is similar to that observed previously with wedge flow but shows interesting effects peculiar to the cone flow. The cone experiments also eliminate the end effect and permit easy variation of the relaxation rate parameter without changing the gas. Perfect-gas argon experiments provide a convenient check.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 101 , Issue 2 , 27 November 1980 , pp. 307 - 319
Copyright
© 1980 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Dorrance, W. H. 1962 Viscous Hypersonic Flow. McGraw-Hill.
Emunds, H. 1976 Deutsche Luft- und Raumfahrt, DLR-FB 76–26.
Hayes, W. D. & Probstein, R. F. 1959 Hypersonic Flow Theory. Academic.
Hornung, H. G. & Smith, G. H. 1979 J. Fluid Mech. 93, 225.
Hornung, H. G. 1977 Proc. 6th Austral. Hydr. Fluid Mech. Conf. Adelaide, p. 217.
Solomon, G. E. 1955 N.A.C.A. Rep. 1242.
Van Driest, E. R. 1952 N.A.C.A. Tech. Note 2597.
Walz, A. 1966 Strömungs- und Temperaturgrenzschichten. Braun.
Ward, L. C. & Pugh, P. G. 1968 A.I.A.A. J. 6, 2018.