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双液滴同时撞击液膜的动力学演变 预览

Dynamic evolution of double droplets simultaneously impacting on flat liquid film
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摘要 为了考察液滴的撞击对液膜变形行为的影响规律,利用CLSV0F ( coupled level set and volume of fluid) 方法模拟双液滴同时撞击平面液膜后的流动过程,获得了不同水平间隔距离、不同撞击速度的两液滴撞击平面液膜后的演变过程特点,通过分析不同时刻压力场分布,探索了两液滴水平间隔距离、韦伯数和撞击速度对双液滴同时撞击液膜后流动过程、形态及对水花高度和中心射流高度的影响.结果表明,碰撞速度较大时的中心液膜射流高度大于碰撞速度较小时的; We数较大时中心射流顶端将产生二次液滴;液滴间距对撞击后初始时( 3 ms之前)撞击点两侧的开始水花高度没有明显影响. To investigate the effects of double droplet impact on the dynamic deformation of liquid films, the cou?pled level set and volume of fluid ( CLSVOF) method was applied to simulate the evolution of double droplets after simultaneously impacting a flat liquid film. The evolution process was recorded at different horizontal distances be?tween the droplets and different impact velocities. By analyzing the pressure field distribution at different moments, effects of the horizontal distance, Weber number, and impact velocity on the flow process, shape, spray height, and center jet height of the double droplets were studied. The results show that:the center jet height is larger when the impact velocity is greater;secondary droplets emerge at the top of the center jet when the Weber number is lar?ger;the horizontal distance between the two droplets has no obvious effect on the initial spray height on both sides of the impact spot at the initial period ( before 3 ms) .
作者 郭亚丽 张京涛 沈胜强 魏兰 GUO Yali;ZHANG Jingtao;SHEN Shengqiang;WEI Lan;School of Energy and Power Engineering,Dalian University of Technology;
出处 《哈尔滨工程大学学报》 EI CAS CSCD 北大核心 2016年第6期796-801,884共7页 Journal of Harbin Engineering University
基金 国家自然科学基金项目(51376037,51336001).
关键词 双液滴 CLSVOF 撞击 液膜 动力学演变 double droplets CLSVOF(coupled level set and volume of fluid) impact liquid film dynamic evolution
作者简介 郭亚丽(1976-),女,教授,博士生导师. 沈胜强(1961-),男,教授,博士生导师.沈胜强,E-mail:zzbshen@dlut.edu.cn.
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参考文献14

  • 1梁刚涛,郭亚丽,沈胜强.液滴撞击液膜的射流与水花形成机理分析[J].物理学报,2013(2):407-413. 被引量:9
  • 2胡海豹,黄苏和,陈立斌.Droplet impact on regular micro-grooved surfaces[J].中国物理B:英文版,2013(8):502-507. 被引量:1
  • 3VANDER WAL R L , BERGER G M, MOZES S D. Dropletssplashing upon films of the same fluid of various depths [J].Experiments in fluids,2006,40( 1) : 33-52. 被引量:1
  • 4FUJIMOTO H , OGINO T, TAKUDA H , et al. Collision of adroplet with a hemispherical static droplet on a solid[J] . Internationaljournal of multiphase flow,2001,27(7) : 1227-1245. 被引量:1
  • 5FUJIMOTO H , ITO S, TAKEZAKI I. Experimental study ofsuccessive collision of two water droplets with a solid [J] .Experiments in fluids,2002,33(3) : 500-502. 被引量:1
  • 6MINAMIKAWA T , FUJIMOTO H , HAMA T , et al. Numericalsimulation of two droplets impinging successively on a hotsolid in the film boiling regime [J] . ISIJ international,2008, 48(5) : 611-615. 被引量:1
  • 7SIVAKUMAR D, TROPE A C. Splashing impact of a spray ontoa liquid film[J]. Physics of fluids,2002,14(12) : 85-88. 被引量:1
  • 8NIKOLOPOULOS N , NIKAS K S , BERGELES G. A numericalinvestigation of central binary collision of droplets [J].Computers & fluids,2009, 38(6) : 1191-1202. 被引量:1
  • 9胡雷,郭加宏,王小永.格子Boltzmann方法模拟双液滴同时冲击固体表面液膜[J].水动力学研究与进展:A辑,2011,26(1):11-18. 被引量:6
  • 10FEDORCHENKO A I , WANG Anbang. On some commonfeatures of drop impact on liquid surfaces [J] . Physics offluids,2004, 16(5) : 1349-1365. 被引量:1

二级参考文献67

  • 1HIRT C W, NICHOLS B D. Volume of fluid (VOF) method for the dynamics of free boundaries [J]. J Comput Phys, 1981,39 : 201-225. 被引量:1
  • 2TOOREY M D, HIRT C W. NASA-VOF2D: a computer program for incompressible flows with free surface[R]. LA-10621-MS, 1985. 被引量:1
  • 3TOOREY M D, STEIN L R. NASA-VOF2D: a three-dimensional computer programfor incompressible flows with free surface[R]. LA-11009-MS, 1987. 被引量:1
  • 4GUNJAL P R, RANADE V V, CHAUDHARI R V. Dynamics of drop impact on solid surface:experiments and VOF simulations[J]. AIChE J, 2005, 51(1) :59-78. 被引量:1
  • 5SIKALO S, TROPEA C, GANIC E N. Dynamic wetting angle of a spreading droplet [J ]. Exp Therm and Fluid Sci , 2005,29(7) : 795-802. 被引量:1
  • 6SIKALO S, TROPEA C, GANIC E N. , 2005b. Impact of droplets onto inclined surfaces[J]. J of Colloid and Interface Sci , 2005,286(2) : 661-669. 被引量:1
  • 7OGUZ H N, PROSPERETTI A. Bubble entrainment by the impact of drop on liquid surfaces[J]. Journal of Fluid Mechanics, 1990, 219: 143-179. 被引量:1
  • 8YARIN A L, WEISS D A. Impact of drops on solid surface: self-similar capillary waves and splashing as a new type of kinematic discontinuity[J]. Journal of Fluid Mechanics, 1995, 283: 141-173. 被引量:1
  • 9WEISS D A, YARIN A L. Single drop impact onto liquid films: neck distortion, jetting, tiny bubble entrainment and crown formation[J] . Journal of Fluid Mechanics, 1999, 385: 229-254. 被引量:1
  • 10RIEBER M, FROHN A. A numerical study on the mechanism of splashing[J]. Intenational Journal of Heat and Fluid Flow, 1999, 20(5): 455-461. 被引量:1

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