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反射激波作用下两种重气柱界面不稳定性实验研究 被引量:5

Experimental study on thereshocked RM instability of two kinds of heavy gas cylinder
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摘要 在水平方形激波管中对两种无膜重气柱界面(分别是SF6和氩气)在反射激波作用下的不稳定性发展进行了实验研究。气柱界面采用射流技术形成,实验采用连续激光片光源照射流场,乙二醇作为示踪粒子,并用高速摄像机对流场进行拍摄,获得了入射激波以及反射激波共同作用下,两种不同气柱界面的演化过程。实验结果表明,两种气柱的Atwood数不同,界面演化速率不同,反射激波到达前后的界面形态不同。SF6气柱在入射激波作用下会产生两个比较明显的反向的涡环结构,而氩气柱界面上由于产生的涡量较少,涡环结构并不明显。在反射激波作用下,SF6气柱界面会出现明显的次级涡对,而且次级涡对的旋转方向与初始涡环结构的旋转方向相反。对于氩气柱而言,在反射激波作用下虽然也产生了与初始涡环方向相反的次级涡对,但次级涡对始终未充分发展。这是因为反射激波作用时氩气柱界面的Atwood数较小导致氩气柱界面上产生的反向涡量较少。实验结果充分表明了气体Atwood数对界面不稳定性的发展起到了较大的影响。 The evolutions of the Richtmyer-Meshkov instability of two kinds of membrane-less heavy gas cylinder (SF6 and argon),under reshock condition with a specific reflected dis-tance,are experimentally studied in a horizontal square shock tube.Based on the jet technique, SF6 and argon gas cylinders are generated respectively to study the effect of Atwood number on the development of the Richtmyer-Meshkov instability.For the visualization of the flow,the tested gases are mixed with glycol droplets which are generated by the fog generator.Illuminated by a continuous laser sheet with a width of 80mm and a thickness of 1 mm,the interface mor-phologies after incident shock and reshock impact are captured in a single test run with the help of the high speed camera.The results show that different evolving rates and interface morphologies before and after reshock are observed for SF6 and argon gas cylinders due to the different Atwood numbers.For the same reflected end wall,the visible two reversed vortex rings are generated for the SF6 gas cylinder after the incident shock passage,which are not apparently observed for the argon gas cylinder because of less vorticity deposition on the interface.Moreover,after the re-shock impact,secondary vortex rings which have reversed rotating directions to the original vor-tex rings are quickly generated in the SF6 gas cylinder and dominate the flow field at the later stage,becoming the primary feature of the flow.However,in the argon gas cylinder,the second-ary vortex rings,though generated with opposite directions of rotation to the original ones,are not fully developed all the time due to the smaller Atwood number that results in less production of reversed baroclinic vorticity on the argon interface.The present results illustrate the pronounced influence of the Atwood number on the development of the Richtmyer-Meshkov instability.
出处 《实验流体力学》 CAS CSCD 北大核心 2014年第6期56-60,共5页 Journal of Experiments in Fluid Mechanics
基金 国家自然科学基金(11272308 11302219) 中央高校基本科研业务费专项资金(WK2090050020) 中国博士后科学基金(BH2090050031)
关键词 无膜气柱 RICHTMYER-MESHKOV不稳定性 反射激波 Atwood数 连续片光 membrane-less gas cylinder Richtmyer-Meshkov instability reshock Atwood number continuous laser sheet
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参考文献21

  • 1Richtmyer R D. Taylor instability in shock acceleration of compressible fluids[J]. Commun Pure Appl Math. 1960. 13: 297- 319.
  • 2Meshkov E E. Instability of the interface of two gases accelerated by a shock wave[J]. Fluid Dyn , 1969. 4: 151-157.
  • 3JacobsJ W. Shock-induced mixing of a light-gas cylinder[J].J Fluid Mech. 1992. 234: 629-649.
  • 4JacobsJ W. The dynamics of shock accelerated light and heavy gas cylinders[J]. Phys Fluids A. 1993. 5: 2239-2247.
  • 5高宁,张光升,林俊.PIV技术在气体界面不稳定性实验研究中的应用[J].高压物理学报,2011,25(2):177-182. 被引量:2
  • 6邹立勇,刘金宏,谭多望,黄文斌,柏劲松,刘仓理.弱激波冲击无膜重气柱和气帘界面的实验研究[J].高压物理学报,2010,24(4):241-247. 被引量:9
  • 7Zou L Y. Liu C L. Tan D W. et al, On interaction of shock wave with elliptic gas cylinder[J].J Vis. 2010. 13 (4): 347- 353.
  • 8Vetter M. Sturtevant B. Experiments on the Richtmyer-Meshkov instability of an air/SF6 interface[J]. Shock Waves. 1995. 4: 247-252.
  • 9Latini M. Schilling O. Don W S. High-resolution simulations and modeling of reshocked single-mode Richtmyer-Meshkov instability: Comparison to experimental data and to amplitude growth model predictionsj l]. Phys Fluids. 2007. 19: 024104.
  • 10Hill DJ. Pantano C. Pullin D 1. Large-eddy simulation and multiscale modeling of a Richtmyer-Meshkov instability with reshock[J].J Fluid Mech. 2006. 557: 29-61.

二级参考文献64

  • 1郭文灿,刘仓理,谭多望,刘金宏,邹立勇,张光升.平面弱激波加载下球形气泡演化的实验研究[J].高压物理学报,2009,23(6):460-466. 被引量:5
  • 2柏劲松,李平,陈森华,廖海东,杨礼兵,姜洋.内爆加载下果冻内外界面不稳定性数值计算[J].高压物理学报,2004,18(4):295-301. 被引量:8
  • 3Kozlov V I. Simulation of SW/turbulence interactions. In: 10^th IWPCTM, Paris, France, July 17-21, 2006.
  • 4Cook A W, Cabot W, Miller P L. The mixing transition in Rayleigh-Taylor instability. J Fluid Mech, 2004, 51:333-362.
  • 5Livescu D, Ristorcelli J R. Buoyancy driven, variable density turbulence. J Fluid Mech, 2007, 91:43-71.
  • 6Juzaitis R. Code validation and stockpile stewardship. Los Alamos Res Q, 2002, 14:6-6.
  • 7Youngs D. Turbulent mixing, discovery. Sci Technol J AWE, 2003, 1 : 30-37.
  • 8Putanik P B, Oakley J G, Anderson M H, et al. Experimental study of the Richtmyer-Meshkov instability induced by a Mach 3 shock wave. Shock Waves, 2004, 13(6): 413-429.
  • 9Arnett D. The role of mixing in astrophysics. Astrophys J Suppl, 2000, 127(2): 213-217.
  • 10Piomelli U, William H, Moin P. Subgrid-scale backscatter in turbulent and transitional flows. Phys Fluids A, 1991, 3(7): 1766-1771.

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