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Direct Numerical Simulation of Three-Dimensional Richtmyer--Meshkov Instability |
| FU De-Xun;MA Yan-Wen;LI Xin-Liang |
| State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences Beijing 100080 |
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| Cite this article: |
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FU De-Xun, MA Yan-Wen, LI Xin-Liang 2008 Chin. Phys. Lett. 25 188-190 |
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Abstract Direct numerical simulation (DNS) is used to study flow characteristics after interaction of a planar shock with a spherical media interface in each side of which the density is different. This interfacial instability is known as the
Richtmyer--Meshkov (R-M) instability. The compressible Navier--Stoke equations are discretized with group velocity control (GVC) modified fourth order accurate compact difference scheme. Three-dimensional numerical simulations are performed for R-M instability installed passing a shock through a spherical interface. Based on numerical results the characteristics of 3D R-M
instability are analysed. The evaluation for distortion of the interface, the deformation of the incident shock wave and effects of refraction, reflection and diffraction are presented. The effects of the interfacial instability on produced vorticity and mixing is discussed.
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| Keywords:
47.20.Ma
47.20.-k
47.40.-x
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Received: 03 April 2007
Published: 27 December 2007
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| PACS: |
47.20.Ma
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(Interfacial instabilities (e.g., Rayleigh-Taylor))
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47.20.-k
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(Flow instabilities)
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47.40.-x
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(Compressible flows; shock waves)
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[6] Kang Y G, Nishimura H, Takabe H, Azechi H and Norimatsu T2001 Plasma Phys. 27 843 |
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