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Synchrotron radiography of wire-driven cylindrically converging shock waves interacting with a cylindrical bubble
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DOI：10.1017/jfm.2026.11472.png)
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Abstract
En 中文
The interaction between cylindrically converging shock waves (SWs) in a water–gelatine solution and a coaxial cylindrical air bubble is studied experimentally and numerically. Two configurations are considered: (i) an azimuthally symmetric; cylindrically converging SW of Mach 1.35 impinging on a coaxial cylindrical bubble; and (ii) a semicylindrical converging SW of Mach 1.45 (corresponding to half of the cylindrical front); interacting with the same target. Shock waves are generated by exploding wire arrays driven by a high-voltage pulsed power system at beamline ID19 of the European Synchrotron Radiation Facility; delivering currents up to 30 m s−1; producing localised high-pressure regions; coherent vortices and complex internal Mach reflections. Experiments; simulations and theory are consistent in collapse time; interface motion and overall flow dynamics.
Keywords:
bubble dynamics
shock waves
gas/liquid flow
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