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Jourdan G, Houas L. High-amplitude single-mode perturbation evolution at the Richtmyer-Meshkov instability. Phys Rev Lett. 2005;95(20):204502doi: 10.1103/PhysRevLett.95.204502.
Jourdan, G., & Houas, L. (2005). High-amplitude single-mode perturbation evolution at the Richtmyer-Meshkov instability. Physical review letters, 95(20), 204502. https://doi.org/10.1103/PhysRevLett.95.204502
Jourdan, Georges, and Houas, Lazhar. "High-amplitude single-mode perturbation evolution at the Richtmyer-Meshkov instability." Physical review letters vol. 95,20 (2005): 204502. doi: https://doi.org/10.1103/PhysRevLett.95.204502
Jourdan G, Houas L. High-amplitude single-mode perturbation evolution at the Richtmyer-Meshkov instability. Phys Rev Lett. 2005 Nov 11;95(20):204502. doi: 10.1103/PhysRevLett.95.204502. Epub 2005 Nov 10. PMID: 16384063.
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Phys Rev Lett. 2005 Nov 11;95(20):204502. doi: 10.1103/PhysRevLett.95.204502. Epub 2005 Nov 10.

High-amplitude single-mode perturbation evolution at the Richtmyer-Meshkov instability.

Physical review letters

Georges Jourdan, Lazhar Houas

Affiliations

  1. Polytech'Marseille, Dpt Mécanique Energétique, IUSTI/UMR CNRS 6595 Technopôle de Château Gombert, 5, rue Enrico Fermi, 13013 Marseille, France. [email protected]

PMID: 16384063 DOI: 10.1103/PhysRevLett.95.204502

Abstract

The single-mode Richtmyer-Meshkov hydrodynamic instability at light/heavy (air/SF6 and air/CO2), close density (air/N2), and heavy/light (air/He) interfaces has been experimentally studied for a low incident shock wave Mach number. Two identical 2D half sinusoidal initial perturbations, with a relatively high initial amplitude, were considered in order to rapidly reach the nonlinear regime and check the reduction of the initial growth rate compared to that predicted by the small-amplitude theory. The growth rate measurements for the air/SF6 and air/CO2 cases are in excellent agreement with the nonlinear model of Sadot et al. coupled with a reduction factor suggested by Rikanati et al. In the air/N2 case, the reversal phase can be precisely described by the linear theory. Finally, the heavy/light experiment is well described by the Vandenboomgaerde model also coupled with a smaller reduction factor.

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