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液滴撞击湿润壁面的运动形态及飞溅运动机制

宋云超 宁智 孙春华 吕明 阎凯 付娟

宋云超, 宁智, 孙春华, 吕明, 阎凯, 付娟. 液滴撞击湿润壁面的运动形态及飞溅运动机制[J]. 力学学报, 2013, 45(6): 833-842. doi: 10.6052/0459-1879-13-053
引用本文: 宋云超, 宁智, 孙春华, 吕明, 阎凯, 付娟. 液滴撞击湿润壁面的运动形态及飞溅运动机制[J]. 力学学报, 2013, 45(6): 833-842. doi: 10.6052/0459-1879-13-053
Song Yunchao, Ning Zhi, Sun Chunhua, Lü Ming, Yan Kai, Fu Juan. MOVEMENT AND SPLASHING OF A DROPLET IMPACTING ON A WET WALL[J]. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(6): 833-842. doi: 10.6052/0459-1879-13-053
Citation: Song Yunchao, Ning Zhi, Sun Chunhua, Lü Ming, Yan Kai, Fu Juan. MOVEMENT AND SPLASHING OF A DROPLET IMPACTING ON A WET WALL[J]. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(6): 833-842. doi: 10.6052/0459-1879-13-053

液滴撞击湿润壁面的运动形态及飞溅运动机制

doi: 10.6052/0459-1879-13-053
基金项目: 国家自然科学基金(51276011)、北京市自然科学基金(3132016)、 国家高技术研究发展计划(2013AA065303)和内燃机燃烧学国家重点实验室开放基金(k2013-3)资助项目.
详细信息
    通讯作者:

    宁智,教授,主要研究方向:流体力学、内燃机燃烧与排放。E-mail:zhining@bjtu.edu.cn

  • 中图分类号: O359

MOVEMENT AND SPLASHING OF A DROPLET IMPACTING ON A WET WALL

Funds: The project was supported by the National Natural Science Foundation of China (51276011), Beijing Natural Science Foundation (3132016), National High Technology Research and Development Program of China (2013AA065303) and State Key Laboratory of Engines, Tianjin University (k2013-3).
  • 摘要: 壁面液体层的存在对液滴撞击壁面的运动具有重要的影响。采用气液两相流动相界面追踪的水平集和流体体积复合方法和壁面润湿模型,实现了液滴撞击湿润壁面运动的数值求解;在此基础上,开展了液滴撞击湿润壁面运动的研究。研究结果表明:液滴以不同速度撞击湿润壁面时,会呈现出黏附铺展、波动运动、皇冠几何体运动以及飞溅运动等几种不同的运动形态,液滴撞击湿润壁面后的压力分布是不同运动形态形成的主要原因;飞溅运动是一定条件下皇冠几何体运动的一种特殊形态,液滴从皇冠几何体侧壁顶端的飞溅分离满足毛细破碎理论;撞击速度对分离液滴的运动方向影响较小,而对壁面液体层厚度的影响则较大;撞击速度和壁面液体层厚度对分离液滴形态、飞溅分离位置、飞溅速度以及飞溅发生时刻等都具有一定的影响。

     

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出版历程
  • 收稿日期:  2013-03-28
  • 修回日期:  2013-05-14
  • 刊出日期:  2013-11-18

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