Volume 87, Number 5, September 2009
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||22 September 2009|
Numerical investigation on the ablative Kelvin-Helmholtz instability
Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics Beijing 100088, China
2 School of Mechanics and Civil Engineering, China University of Mining and Technology - Beijing 100083, China
3 Department of Physics, Zhejiang University - Hangzhou 310027, China
4 Center for Applied Physics and Technology, Peking University - Beijing 100871, China
Corresponding author: email@example.com
Accepted: 25 August 2009
The ablative effect on the Kelvin-Helmholtz instability is attemptly analyzed by numerical simulation. One-dimensional ablative effect is analyzed and some typical profiles are introduced for the two-dimensional simulations. We found that the linear growth rate and frequency are reduced by the ablative effect. The heat conduction stabilize the Kelvin-Helmholtz instability by suppressing the growth and transmission of the perturbation. In the weakly nonlinear regime, the ablative effect suppresses the appearance and growth of the second and third harmonics.
PACS: 47.20.Ft – Instability of shear flows (e.g., Kelvin-Helmholtz) / 52.35.Py – Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.) / 52.57.Fg – Implosion symmetry and hydrodynamic instability (Rayleigh-Taylor, Richtmyer-Meshkov, imprint, etc.)
© EPLA, 2009
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