Chin. Phys. Lett.  2011, Vol. 28 Issue (5): 055202    DOI: 10.1088/0256-307X/28/5/055202
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
Similar Rayleigh–Taylor Instability of Shock Fronts Perturbed by Corrugated Interfaces
HE Yong1**, HU Xi-Wei2, JIANG Zhong-He2
1Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900
2College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074
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HE Yong, HU Xi-Wei, JIANG Zhong-He 2011 Chin. Phys. Lett. 28 055202
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Abstract Instability of a planar shock front perturbed by a corrugated interface is analyzed, where the perturbation wavelength is along the shock front plane. The presented analysis involves the effects of the features on the shock front, which is different from a general method presented by D'yakov and Kontorovich, where the shock front is taken as an infinitely discontinuity. The growth rate of the instability of the perturbed shock front is obtained and compared with the growth rate of the Rayleigh–Taylor instability (RTI) of an interface, on which the density gradient and the initial conditions are similar to the perturbed shock front. The analysis and comparisons of the growth rate of the instability indicate that the features of the shock front should be considered seriously in the shock interface interactions.
Keywords: 52.35.TC      52.35.Py     
Received: 06 April 2010      Published: 26 April 2011
PACS:  52.35.Tc (Shock waves and discontinuities)  
  52.35.Py (Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/28/5/055202       OR      https://cpl.iphy.ac.cn/Y2011/V28/I5/055202
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HE Yong
HU Xi-Wei
JIANG Zhong-He
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