Vorticity generation by shock propagation through bubbles in a gas (original) (raw)
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Abstract
A new theoretical model is presented which describes 'late-time' phenomena related to the interaction of a planar shock with a local discrete inhomogeneity in an ambient gas. The simplest case (i.e., the case of a single isolated inhomogeneity) is considered with emphasis on the generation and dynamics of long-lived vorticity by such processes. The theoretical description is verified and further developed by using numerical solutions of the fluid equations for conservation of mass, momentum, and energy to study the interaction of a weak shock with a cylindrical or spherical bubble. The structural features and time scales of the phenomena observed agree closely with recent experiments of Haas and Sturtevant (1987).
Publication:
Journal of Fluid Mechanics
Pub Date:
April 1988
DOI:
Bibcode:
Keywords:
- Bubbles;
- Cavitation Flow;
- Gas Dynamics;
- Shock Wave Propagation;
- Vortex Generators;
- Computational Fluid Dynamics;
- Computerized Simulation;
- Rotating Fluids;
- Shock Wave Interaction;
- Taylor Instability;
- Fluid Mechanics and Heat Transfer