Simulation of shock-generated instabilities

Journal Article · Sun Sep 01 04:00:00 UTC 1996 · Physics of Fluids (1994)

DOI:https://doi.org/10.1063/1.869032· OSTI ID:286587

Baltrusaitis, R M ^[1]; Gittings, M L ^[2]; Weaver, R P ^[1]; Benjamin, R F; Budzinski, J M ^[3]

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1. Thermonuclear Applications Group, Applied Theoretical and Computational Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Thermonuclear Applications Group and Hydrodynamic Methods Group, Applied Theoretical and Computational Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. Hydrodynamic Group Experimentation Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

Direct 2-D numerical simulation of the fluid instability of a shock-accelerated thin gas layer shows flow patterns in agreement with experimental images. The Eulerian-based hydrodynamics code features Adaptive Mesh Refinement that allows the code to follow the vorticity generation and the complex flow resulting from the measured initial perturbations. These experiments and simulations are the first to address in quantitative detail the evolution of the Richtmyer{endash}Meshkov instability in a thin fluid layer, and to show how interfluid mixing and vorticity production depend sensitively on initial perturbations in the layer. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Los Alamos National Laboratory
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 286587
• Journal Information: Physics of Fluids (1994), Journal Name: Physics of Fluids (1994) Journal Issue: 9 Vol. 8; ISSN 1070-6631; ISSN PHFLE6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COMPRESSIBLE FLOW
COMPUTER CODES
COMPUTERIZED SIMULATION
FLUID-FLUID INTERFACES
GAS FLOW
INSTABILITY GROWTH RATES
SHOCK WAVES
VORTICITY