Abstract

The effect of the wall contours in an axisymmetric tube on the transition from the shock wave to the detonation wave is studied numerically. Qualitative features and quantitative characteristics of the detonation initiation mechanism realized in a tube with a parabolic segment of the wall contour and conical expansion are found. The calculated results are presented in the form of “detonation curves” (angle of inclination of the contoured segment versus the Mach number of the initial shock wave) for various levels of tube blockage ratio.

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