Study on mixing induced by Richtmyer-Meshkov instability by using buoyancy-drag model

Yang Min; Wang Li-li; Zhou Hai-bing; Zhang Shu-dao

doi:10.11883/1001-1455(2015)03-0423-05

Volume 35 Issue 3

Jun. 2015

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Yang Min, Wang Li-li, Zhou Hai-bing, Zhang Shu-dao. Study on mixing induced by Richtmyer-Meshkov instability by using buoyancy-drag model[J]. Explosion And Shock Waves, 2015, 35(3): 423-427. doi: 10.11883/1001-1455(2015)03-0423-05

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Yang Min, Wang Li-li, Zhou Hai-bing, Zhang Shu-dao. Study on mixing induced by Richtmyer-Meshkov instability by using buoyancy-drag model[J]. Explosion And Shock Waves, 2015, 35(3): 423-427. doi: 10.11883/1001-1455(2015)03-0423-05

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Study on mixing induced by Richtmyer-Meshkov instability by using buoyancy-drag model

doi: 10.11883/1001-1455(2015)03-0423-05

Yang Min^1
,,
Wang Li-li^{1, 2},
Zhou Hai-bing^{1, 2},
Zhang Shu-dao^{1, 2}

1.
Insitute of Applied Physics and Computational Mathematics, Beijing 100094, China
2.
Center for Applid Physics and Tchnology, Peking University, Beijing 100871, China

Received Date: 2013-11-28
Rev Recd Date: 2014-06-28
Publish Date: 2015-05-25

Abstract

Abstract

The mixing induced by Richtmyer-Meshkov instability under lower and high compression ratios is studied by using buoyancy-drag model.It is found by the comparison between the experimental and theoretical analytic results that in order to achieve good agreement, the range of the drag coefficient value chosen in Richtmyer-Meshkov instability is much wider than that in Rayleigh-Taylor instability; while in Richtmyer-Meshkov instability the uncertainty of the drag coefficient under high compression is larger than that under lower compression.It is pointed that the further improvement of the model needs to be validated by more accurate experiment.Moreover the study reveals that the exponent in empirical expression varies with calculation conditions remarkably and the use of the empirical expression in current engineering design is rough.
- fluid mechanics,
- Richtmyer-Meshkov instability,
- buoyancy-drag model,
- disturbed interface,
- compression ratio

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References(17)

References

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