Evolution of a shock-accelerated thin fluid layer
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Multi-exposure flow visualization experiments with laser-sheet illumination provide growth-rate measurement of Richtmyer{endash}Meshkov instability of a thin, perturbed heavy-gas layer embedded in a lower-density gas and accelerated by a planar shock wave. The measurements clearly show the three-stage transition to turbulence of this gas-curtain instability and the single-event coexistence of the three primary flow morphologies discovered previously. The shock-induced circulation for each event is estimated using a simple model based on Richtmyer{endash}Meshkov instability and an infinite linear array of vortex points. These estimates are consistent with simplified flow simulations using a finite-core vortex-blob model.
- Research Organization:
- Los Alamos National Laboratory
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 496681
- Journal Information:
- Physics of Fluids (1994), Journal Name: Physics of Fluids (1994) Journal Issue: 6 Vol. 9; ISSN PHFLE6; ISSN 1070-6631
- Country of Publication:
- United States
- Language:
- English
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