Chin. Phys. Lett.  2004, Vol. 21 Issue (9): 1770-1772    DOI:
Original Articles |
Effects of Adiabatic Exponent on Richtmyer--Meshkov Instability
TIAN Bao-Lin;FU De-Xun;MA Yan-Wen
Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080
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TIAN Bao-Lin, FU De-Xun, MA Yan-Wen 2004 Chin. Phys. Lett. 21 1770-1772
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Abstract We present a systematical numerical study of the effects of adiabatic exponent γ on Richtmyer--Meshkov instability (RMI) driven by cylindrical shock waves, based on the γ model for the multi-component problems and numerical simulation with high-order and high-resolution method for compressible Euler equations. The results show that the RMI of different γ across the interface exhibits different evolution features with the case of single γ. Moreover, the large γ can hold back the development of nonlinear structures, such as spikes and bubbles.

Keywords: 47.20.Ma      47.20.-k      47.40.-x     
Published: 01 September 2004
PACS:  47.20.Ma (Interfacial instabilities (e.g., Rayleigh-Taylor))  
  47.20.-k (Flow instabilities)  
  47.40.-x (Compressible flows; shock waves)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2004/V21/I9/01770
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TIAN Bao-Lin
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