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液滴撞击液膜的射流与水花形成机理分析 被引量:9

Analysis of liquid sheet and jet flow mechanism after droplet impinging onto liquid film
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摘要 建立了单液滴撞击平面液膜的物理与数学模型,采用Coupled Level Set and Volume of Fluid方法对这种现象进行了数值模拟,探讨了黏度和表面张力对冠状水花形态的影响.通过分析撞击后液体内部的压力和速度分布,揭示了液滴颈部射流的产生机理,验证了Yarin和Weiss提出的运动间断理论.研究显示,表面张力对冠状水花形态的影响远大于黏度的影响.颈部射流的产生主要是由于撞击后颈部区域局部较大压差造成的,随着撞击过程的继续,压差作用减弱:液膜内流体的径向运动对射流发展成冠状水花具有推动作用. Physical and mathematical models are established to simulate the phenomenon of single droplet impinging onto fiat liquid film by using the coupled level set and volume of fluid method, and influences of viscosity and surface tension on the morphology of the crown liquid sheet are discussed. Besides, the mechanism of jet flow in the neck region is revealed and the theory of kinematic discontinuity proposed by Yarin and Weiss is verified by analyzing the distributions of pressure and velocity after impingement. The research result shows that the effect of surface tension on the crown morphology is far stronger than that of viscosity. Generation of jet flow is due to the higher pressure difference, the effect of which becomes weak with impact evolution and the jet flow is developed into the crown gradually with the help of radial flow in the liquid film.
作者 梁刚涛 郭亚丽 沈胜强 Liang Gang-Tao, Guo Ya-Li, Shen Sheng-Qiangt( School of Energy and Power Engineering, Dalian University of Technology, Key Lab. for Ocean Energy Utilization and Energy Conservation of Education of Ministry, Dalian 116024, China)
出处 《物理学报》 SCIE EI CAS CSCD 北大核心 2013年第2期407-413,共7页 Acta Physica Sinica
基金 国家自然科学基金(批准号:51176017,50976016)资助的课题
关键词 液滴撞击 液膜 射流 水花 drop impingement, liquid film, jet flow, liquid sheet
作者简介 通讯作者,E-mail:zzbshen@dlut.edu.cn
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参考文献26

  • 1Cossali G E;Coghe A;Marengo M.查看详情[J],Experiments in Fluids1997463. 被引量:1
  • 2Vander Wal R;Berger G;Mozes S.查看详情[J],Experiments in Fluids200653. 被引量:1
  • 3Vander Wal R;Berger G;Mozes S.查看详情[J],Experiments in Fluids200633. 被引量:1
  • 4Yarin A L;Weiss D A.查看详情[J],Journal of Fluid Mechanics1995141. 被引量:1
  • 5郭加宏;戴世强;代钦.查看详情[J]物理学报,20102601. 被引量:1
  • 6Wang A B;Chen C C.查看详情[J],Physics of Fluids20002155. 被引量:1
  • 7Fedorchenko A I;Wang A B.查看详情[J],Physics of Fluids20041349. 被引量:1
  • 8严永华;石自媛;杨帆;陈红勋.查看详情[J]上海大学学报(自然科学版),2008399. 被引量:1
  • 9周轶;郭加宏;陈红勋.查看详情[J]计算物理,20102731. 被引量:1
  • 10马理强;常建忠;刘汉涛;刘谋斌.查看详情[J]物理学报,2012054701. 被引量:1

同被引文献97

  • 1梁刚涛,沈胜强,杨勇.单液滴撞击平面液膜飞溅过程的clsvof模拟[J].热科学与技术,2012(1):8-12. 被引量:12
  • 2PAN K L, CHENG K R, CHOU P C, et al. Collision dynamics of high-speed droplets upon layers of variable thickness [J]. Exp in Fluids, 2008, 45: 435-446. 被引量:1
  • 3RIOHOO R, BAUTHIER C, CONTI J, et al. Experimental investigation of splash and crown formation during single drop impact on wetted surfaces [J]. Exp in Fluids, 2003, 35:648-652. 被引量:1
  • 4COSSALI G E, MARENGO M, COGHE A, et al. The role of time in single drop splash on thin film [J]. Exp in Fluids, 2004, 36:888-900. 被引量:1
  • 5SIVAKUMAR D, TROPEA C. Splashing impact of a spray onto a liquid film [J]. Phys of Fluids, 2002, 14(12) -85-88. 被引量:1
  • 6LEE S H, HUR N, KANG S. A numerical analysis of drop impact on liquid film by using a level set method [J]. J of Mech Sci and Tech, 2011, 25 (10) :2567-2572. 被引量:1
  • 7MUKHERJEE S, ABRAHAM J. Crown behavior in drop impact on wet walls [J]. Phys of Fluids, 2007, 19-052103-1-10. 被引量:1
  • 8ASADI S, PASSANDIDEH-FARD M. A computational study on droplet impingement onto a thin liquid film [J]. The Arabian J for Sci and Eng, 2009, 34:505-517. 被引量:1
  • 9VANDER WAL R L, BERGER G M, MOZES S D. Droplets splashing upon films of the same fluid of various depths [J]. Exp in Fluids, 2006, 40: 33-52. 被引量:1
  • 10Li Y Q, Qin Y P, Yang X B 2011 Procedia Engineering (Beijing: Elsevier Press) 26 738. 被引量:1

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