Unsteady Turbulent Shear Flow in Shock Tube Discontinuities
Using a pressure-ruptured shock tube and an arc driven shock tube, we have studied the evolution of turbulent fluctuations at contact surfaces with N2O4 ← → 2NO2 mixtures and at ionizing shock fronts in argon. We have focused on point density diagnostics derived from crossed light beam correlations and electric probes. Turbulent bursts are found for which dynamical and spectral analyses suggest a particle-like evolution of fluctuation segments with a unique and characteristic frequency, independent of flow history and overall flow conditions.
KeywordsPower Spectrum Shock Front Detonation Wave Shock Tube Blast Wave
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- 5.M. Kac, The Boltzmann Equation (New York: Springer) 379 (1973).Google Scholar
- 9.L.I., J.A. Johnson III and J.P. Santiago (submitted to Journal of Plasma Physics); also Lin I, Ph.D. dissertation 1981 (unpublished).Google Scholar
- 10.L. Landau and E. Lifshitz, Fluid Mechanics (reading, Mass: Addison-Wesley) 114 (1959).Google Scholar
- 12.J.N. Bradley, Shock Waves in Chemistry and Physics, (London:Methuen) 88 (1962).Google Scholar
- 13.J.A. Johnson III, R. Ramaiah and J. Santiago, Rev. Sci. Instr., (1981, to be published).Google Scholar
- 15.L.S.G. Kovasznay, Structure and Mechanism in Turbulence, Vol. I, H. Fiedler (ed) (New York: Springer) 1 (1978).Google Scholar
- 16.R.C. Davidson, Method in Nonlinear Plasma Theory, (New York: Academic), 15 (1972).Google Scholar
- 17.V.N. Taytovick Theory of Turbulent Plasma (New York: Consultants Bureau) 1 (1977).Google Scholar
- 20.G. Sthubauer and P.S. Klebanoff, NACA Report 1289 (1956).Google Scholar