Influence of magnetic field on interaction of shock wave with R22 heavy gas column

Lin Zhenya; Zhang Huanhao; Chen Zhihua; Liu Ying

doi:10.11883/1001-1455(2017)04-0748-11

Volume 37 Issue 4

May 2017

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Lin Zhenya, Zhang Huanhao, Chen Zhihua, Liu Ying. Influence of magnetic field on interaction of shock wave with R22 heavy gas column[J]. Explosion And Shock Waves, 2017, 37(4): 748-758. doi: 10.11883/1001-1455(2017)04-0748-11

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Lin Zhenya, Zhang Huanhao, Chen Zhihua, Liu Ying. Influence of magnetic field on interaction of shock wave with R22 heavy gas column[J]. Explosion And Shock Waves, 2017, 37(4): 748-758. doi: 10.11883/1001-1455(2017)04-0748-11

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Influence of magnetic field on interaction of shock wave with R22 heavy gas column

doi: 10.11883/1001-1455(2017)04-0748-11

National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Received Date: 2016-03-24
Rev Recd Date: 2016-08-23
Publish Date: 2017-07-25

Abstract

Abstract

To study the interaction process of the plane incident shock wave with the magnetized R22 heavy gas column, we numerically simulated the deformation process of the shock-wave-induced R22 heavy gas column resulting from Kelvin-Helmholtz (KH) and Richtmyer-Meshkov (RM) instabilities under different initial conditions, and analyzed the jet focusing and inducing process by the transmitted shock wave. When the magnetic field was taken into consideration, the CTU + CT algorithm satisfying the divergence equation of the magnetic field at any time was adopted in the numerical simulation. The results show that the magnetic field is capable of restraining the instability of the shock-wave-induced R22 gas column. Both the normal magnetic field (vertical to the flow direction) and the tangential magnetic field (parallel to the flow direction) can inhibit the RM instability. However, the restraining of the normal magnetic field is more effective than that of the tangential one with regard to the KH instability, as it can not only inhibit the vortex train rolling up on the interface but also prevent the bound vortex from developing. Besides, it is found that the magnetic field has little influence on the jet, and the magnetic energy at the jet point can suppress the jet attenuation to some extent while the normal magnetic field can reduce the peak pressure and velocity when the transmitted shock wave is focused.
- magnetization gas,
- magneto-hydro-dynamics,
- magnetic field,
- instability,
- shock wave

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References(23)

References

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