Study on the effect of Mach number and initial amplitudes on the evolution of a single-mode shock-induced hydro-dynamic instability

O. Sadot, A. Rikanati, D. Oron, G. Ben-Dor, D. Shvarts

Research output: Contribution to journalArticlepeer-review

Abstract

In the present study the Mach number and the high-initial amplitudes effects on the evolution of the single-mode shock wave induced instability were investigated. To distinguish between the above-mentioned effects, two sets of shock-tube experiments were conducted: high-initial amplitudes with a low-Mach incident shock; and small amplitude initial conditions with moderate-Mach incident shock. In the high-amplitude experiments a reduction of the initial velocity with respect to the linear prediction was measured. The results were compared to those predicted by a vorticity deposition model and to previous experiments with moderate and high Mach numbers done by others and good agreement was found. The result suggested that the high-initial amplitude effect is the dominant one rather then the high-Mach number effect as suggested by others. In the small amplitude-moderate Mach numbers experiments a reduction from the impulsive theory was noted at late stages.

Fingerprint

Dive into the research topics of 'Study on the effect of Mach number and initial amplitudes on the evolution of a single-mode shock-induced hydro-dynamic instability'. Together they form a unique fingerprint.

Cite this