Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-19T00:30:43.974Z Has data issue: false hasContentIssue false

Self-similar strong shocks in an exponential medium

Published online by Cambridge University Press:  28 March 2006

Wallace D. Hayes
Affiliation:
Princeton University and Stanford Research Institute

Abstract

The self-similar one-dimensional propagation of a strong shock wave in a medium with exponentially varying density and ray-tube area is studied, using the Eulerian approach of Sedov. Conservation integrals analogous to Sedov's are obtained, with the expression for the Lagrangian variable. Calculated results are compared with the predictions of the CCW (Chisnell, Chester and Whitham) approximation. It was found that, in contrast to the implosion case, the propagation parameter from the CCW approximation is in error by 15% or more.

Type
Research Article
Copyright
© 1968 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

Andryankin, E. I., Kogan, A. M., Kompaneets, A. S. & Krainov, V. P. 1962 The propagation of a strong explosion in a nonhomogeneous atmosphere. Zh. Prikl. Mat. Tekh. Fiz. no. 6, 37.Google Scholar
Chester, W. 1954 The quasi-cylindrical shock tube. Phil. Mag. (7) 45, 1293301.Google Scholar
Chester, W. 1940 The propagation of shock waves along ducts of varying cross section, Advances in Applied Mechanics, vol. VI, 11952. New York: Academic Press.
Chisnell, R. F. 1955 The normal motion of a shock wave through a non-uniform one-dimensional medium. Proc. Roy. Soc A 232, 35070.Google Scholar
Chisnell, R. F. 1957 The motion of a shock wave in a channel, with applications to cylindrical and spherical shock waves J. Fluid Mech. 2, 28698.Google Scholar
Hayes, W. D. 1963 Long-range acoustic propagation in the atmosphere, Research paper P-50 (IDA/HQ 63-2014), Inst. for Defense Analyses, Washington, D.C. To appear as part of NASA Special Publication.Google Scholar
Hayes, W. D. 1968 Self-similar strong shocks in an exponential medium J. Fluid Mech. 32, 305315.Google Scholar
Kompaneets, A. S. 1960 A point explosion in an inhomogeneous atmosphere. Dokl. AN SSSR 130, 10013; Soviet Physics-Doklady, 5, 46–8.Google Scholar
Raizer, YU. P. 1964 The propagation of a shock wave in a nonuniform atmosphere in the direction of decreasing density. Zh. Prikl. Mat. Tekh. Fiz. no. 4, 4956.Google Scholar
Sakurai, A. 1960 On the problem of a shock wave arriving at the edge of a gas Comm. Pure Appl. Math. 13, 35370.Google Scholar
Whitham, G. B. 1957 A new approach to problems of shock dynamics. Part I. Two-dimensional problems J. Fluid Mech. 2, 14571.Google Scholar
Whitham, G. B. 1958 On the propagation of shock waves through regions of non-uniform area or flow J. Fluid Mech. 4, 33760.Google Scholar
Whitham, G. B. 1959 A new approach to problems of shock dynamics. Part II. Three-dimensional problems J. Fluid Mech. 5, 36986.Google Scholar