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[1]张 瑜,宁 智,吕 明,等.液滴撞击高温壁面的运动特性[J].燃烧科学与技术,2017,(05):451-457.[doi:10.11715/rskxjs.R201609003]
 Zhang Yu,Ning Zhi,Lü Ming,et al.Dynamics of Droplet Impacting onto Heated Surface[J].Journal of Combustion Science and Technology,2017,(05):451-457.[doi:10.11715/rskxjs.R201609003]
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液滴撞击高温壁面的运动特性()
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《燃烧科学与技术》[ISSN:1006-8740/CN:12-1240/TK]

卷:
期数:
2017年05
页码:
451-457
栏目:
出版日期:
2017-10-15

文章信息/Info

Title:
Dynamics of Droplet Impacting onto Heated Surface
作者:
张 瑜宁 智吕 明孙春华
北京交通大学机械与电子控制工程学院,北京 100044
Author(s):
Zhang YuNing ZhiLü MingSun Chunhua
School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044,China
关键词:
液滴高温壁面反弹Leidenfrost 现象数值模拟
Keywords:
dropletheated surfacereboundLeidenfrost effectnumerical simulation
分类号:
TK407.9
DOI:
10.11715/rskxjs.R201609003
文献标志码:
A
摘要:
利用相界面追踪复合Level Set-VOF 方法,综合考虑液滴蒸发传热及接触热阻作用,对单液滴撞击高温 壁面运动及影响因素进行了研究.研究表明,由于液滴蒸发传热作用,液滴撞击高温壁面会发生Leidenfrost 现 象;撞击速度较小时,液滴撞壁后发生铺展反弹,随着撞击速度的增大,液滴撞壁后会发生破碎现象;壁面温度 的升高利于液滴破碎发生;液滴初始直径的减小有利于液滴撞壁后的反弹,而液滴直径的增大有利于液滴撞壁后 破碎.通过数值模拟,给出了一定条件下柴油液滴撞击高温壁面反弹及破碎的临界条件.
Abstract:
In this paper,in order to explore the dynamics of droplet and the influence factors when it impacts onto heated surface above the Leidenfrost temperature,a numerical model was developed using the coupled Level Set- VOF method including evaporation heat transfer and contact resistance.The results show that Leidenfrost effect will occur when the droplet impacts on the heated surface because of its evaporation.The droplet with low velocity will levitate and bounce after impacting onto the heated surface,while the droplet with high velocity will breakup after impacting onto the heated surface.The high temperature of wall exerts a great influence on the breakup.The decrease of initial droplet diameter easily leads to the rebound phenomenon. While the increase of initial droplet diameter is likely to cause the spreading-breakup phenomenon.Finally,the critical conditions of rebound and breakup are summarized,respectively,by numerical simulation.

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备注/Memo

备注/Memo:
收稿日期:2016-09-09. 基金项目:国家自然科学基金资助项目(51776016;51606006);北京市自然科学基金资助项目(3172025);中国博士后科学基金资助 项目(2016M591061);中央高校基本科研业务费专项基金(2016JBM049). 作者简介:张 瑜(1990— ),女,硕士研究生,14121349@bjtu.edu.cn. 通讯作者:宁 智,男,博士,教授,zhinning@bjtu.edu.cn.
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