Comparison between RayleighTaylor instabilities of compressible and incompressible fluid

qin cheng sen; wang pei

Volume 15 Issue 10

Oct. 2003

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Article Navigation > High Power Laser and Particle Beams > 2003 > 15(10): 0-

wang wei-ping, lu bai-da, liu cang-li, et al. Mechanism of laser induced ripple damage on a film mirror[J]. High Power Laser and Particle Beams, 2003, 15.

Citation:

qin cheng sen, wang pei. Comparison between RayleighTaylor instabilities of compressible and incompressible fluid[J]. High Power Laser and Particle Beams, 2003, 15.

wang wei-ping, lu bai-da, liu cang-li, et al. Mechanism of laser induced ripple damage on a film mirror[J]. High Power Laser and Particle Beams, 2003, 15.

Citation:

qin cheng sen, wang pei. Comparison between RayleighTaylor instabilities of compressible and incompressible fluid[J]. High Power Laser and Particle Beams, 2003, 15.

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Comparison between RayleighTaylor instabilities of compressible and incompressible fluid

1.
Institute of Applied Physics and Computational Mathematics,P.O.Box 8009 1５,Beijing 100088,China

Publish Date: 2003-10-15

Abstract

Abstract

Comparison between RayleighTaylor instability growth rates of compressible and incompressible fluid is made, with the state equation of compressible fluid in an arbitrary function form of density and pressure. It is shown that with the same density distribution, interface perturbation growth rate of compressible fluid is always greater than the counter one. The relative growth rate increases with perturbation wavelength, and decreases with velocity of sound of upper and lower fluid. The value of relative growth rate can exceed 0.8 at long wave and more compressible fluid, so compressibility of fluid shouldn't be neglected at some conditions.
- rayleightaylor instability,
- compressible fluid,
- incompressible fluid,
- perturbation,
- growth rate,
- relative growth rate

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