| 液滴冲击液膜问题的光滑粒子动力学模拟 |
| 其他题名 | Numerical simulation of droplet impact onto liquid films with smoothed particle hydrodynamics
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| 马理强; 刘谋斌 ; 常建忠; 苏铁熊; 刘汉涛
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| 发表期刊 | 物理学报=Acta Physica Sinica
 |
| 2012-12-23
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| 卷号 | 61期号:24页码:244701/1-244701/10 |
| ISSN | 1000-3290
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| 摘要 | 本文对传统的光滑粒子动力学方法进行了改进.改进的光滑粒子动力学方法对传统粒子方法中的核梯度进行了修正,采用了一种新型的耦合边界条件,添加了表面张力和人工应力的计算程序.应用改进的光滑粒子动力学方法对液滴冲击液膜问题进行了数值模拟.得到了不同时刻液滴内部的压力变化特征,精细地捕捉了不同时刻的自由面,从机理上分析了液滴产生飞溅的条件,探讨了韦伯数,表面张力对液滴冲击液膜问题的影响.计算结果表明,改进光滑粒子动力学方法能够有效地描述液滴冲击液膜的动力学特性和自由表面变化特征,能够得到稳定精度的结果. |
| 其他摘要 | In this paper, we present a modified smoothed particle hydrodynamics (SPH) method. In order to well predict the morphology change of liquid drop, the presented SPH method employs a kernel gradient correction and a coupled solid boundary treatment algorithm. An inter-particle interaction force is used to model surface tension, and an artificial stress model is used to deal with tensile instability. The process of droplet impacting on liquid film is numerically simulated by the modified SPH method, which can well predict the pressure field evolution process of the drop impacting onto the liquid film and capture the variation of the free surface at different instants. Effects of Web number and surface stress on droplet impacting are also investigated, and mechanism of droplet splashing is analyzed. It is clearly demonstrated that the modified SPH method can effectively describe the dynamics of droplet splashing and the variation of the free surface. The obtained liquid drop morphology accords well with the results from other sources. |
| 关键词 | 液滴
液膜
光滑粒子动力学
数值模拟
Droplet Impact
Liquid Film
Smoothed Particle Hydrodynamics
Numerical Simulation
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| 学科领域 | 物理力学
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| DOI | 10.7498/aps.61.244701
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| URL | 查看原文
|
| 收录类别 | SCI
; CSCD
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| 语种 | 中文
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| WOS记录号 | WOS:000316734400049
|
| 关键词[WOS] | SINGLE DROP
; SURFACE-TENSION
; SOLID-SURFACE
; DYNAMICS
; SPLASH
; FLOWS
; MODEL
; SPH
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| WOS研究方向 | Physics
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| WOS类目 | Physics, Multidisciplinary
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| 项目资助者 | 国家自然科学基金(批准号:50976108,11172306);山西省人才专项基金(批准号:20060403JJ)资助的课题
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| CSCD记录号 | CSCD:4729960
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| 课题组名称 | LMFS冲击与耦合效应(LHO)
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/47173
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| 专题 | 流固耦合系统力学重点实验室
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| 通讯作者 | 马理强 |
推荐引用方式
GB/T 7714 |
马理强,刘谋斌,常建忠,等. 液滴冲击液膜问题的光滑粒子动力学模拟[J]. 物理学报=Acta Physica Sinica,2012,61,24,:244701/1-244701/10.
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| APA |
马理强,刘谋斌,常建忠,苏铁熊,&刘汉涛.(2012).液滴冲击液膜问题的光滑粒子动力学模拟.物理学报=Acta Physica Sinica,61(24),244701/1-244701/10.
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| MLA |
马理强,et al."液滴冲击液膜问题的光滑粒子动力学模拟".物理学报=Acta Physica Sinica 61.24(2012):244701/1-244701/10.
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