全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
科技导报  2015 

基于SPH方法连续液滴撞击固壁面模拟

DOI: 10.3981/j.issn.1000-7857.2015.11.001, PP. 13-16

Keywords: 固壁面,液滴撞击,SPH,韦伯数

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了研究连续液滴对固壁面的撞击影响,引入一种纯Lagrange、无网格计算方法,即光滑粒子流体动力学方法(SPH)。对连续液滴撞击固壁面的扩散、回弹及飞溅进行了数值模拟并与实验测试进行比对。结果表明连续液滴撞击固壁面时,液滴的自由表面变化具有许多不确定性,其中次生液滴的产生和韦伯数的作用是影响液滴撞击扩散的主因。次生液滴的出现使得液滴扩散及飞溅变得更为明显,韦伯数越大,连续液滴的无量纲直径变化越快。模拟效果真实反映了液滴撞击过程,可为类似撞击问题的仿真分析提供借鉴。

References

[1]  Inamuro T, Tajima S, Ogino F. Lattice Boltzmann simulation of droplet collision dynamics[J]. International Journal of Heat and Mass Transfer, 2004, 47(21): 4649-4657.
[2]  Li D M, Xu Y N, Li L L, et al. Tracking methods for free surface and simulation of a liquid droplet impacting on a solid surface based on SPH[J]. Journal of Hydrodynamics, 2011, 23(4): 447-456.
[3]  Jiang T, Ouyang J, Li X, et al. Numerical study of a single drop impact onto a liquid film up to the consequent formation of a crown[J]. Journal of Applied Mechanics and Technical Physics, 2013, 54(5): 720-728.
[4]  Lopez Y R, Roose D, Morfa C R. Dynamic particle refinement in SPH: Application to free surface flow and non-cohesive soil simulations[J]. Computational Mechanics, 2013, 51(5): 731-741.
[5]  Liu G R, Liu M B. Smoothed particle hydrodynamics: A meshfree particle method[M]. Singapore: World Scientific Publishing, 2003.
[6]  Liu M B, Liu G R. Smoothed particle hydrodynamics (SPH): An overview and recent developments[J]. Archives of Computational Methods in Engineering, 2010, 17(1): 25-76.
[7]  徐金中, 汤文辉. 高速碰撞SPH方法模拟中的初始光滑长度和粒子间距[J]. 计算物理, 2009, 26(4): 548-552. Xu Jinzhong, Tang Wenhui. Initial smoothing length and space between particles in SPH method for numerical simulation of highspeed impacts[J]. Chinese Journal of Computational Physics, 2009, 26 (4): 548-552.
[8]  Lee S H, Hur N, Kang S. A numerical analysis of drop impact on liquid film by using a level set method[J]. Journal of Mechanical Science and Technology, 2011, 25(10): 2567-2572.
[9]  Monaghan J J. Smoothed particle hydrodynamics[J]. Annual Review of Astronomy and Astrophysics, 1992, 30: 543-574.
[10]  Wang A B, Chen C C. Splashing impact of a single drop onto very thin liquid films[J]. Physics of Fluids, 2000, 12(9): 2155-2158.
[11]  Rioboo R, Bauthier C, Conti J, et al. Experimental investigation of splash and crown formation during single drop impact on wetted surfaces[J]. Experiments in Fluids, 2003, 35(6): 648-652.
[12]  Chen R H, Kuo M J, Chiu S L, et al. Impact of a compound drop on a dry surface[J]. Journal of Mechanical Science and Technology, 2007, 21: 1886-1891.
[13]  李大鸣, 李晓瑜, 林毅. 液滴冲击自由液面的SPH法数值模拟[J]. 中国科学: 技术科学, 2011, 41(8): 1055-1062. Li Daming, Li Xiaoyu, Lin Yi. Numerical simulation of droplet impacting liquid surface[J]. Scientia Sinica Technologica, 2011, 41(8): 1055-1062.
[14]  施明恒. 单个液滴碰击表面时的流体动力学特性[J]. 力学学报, 1985, 17(5): 419-425. Shi Mingheng. Behavior of a liquid droplet impinging on a solid surachievements in earthface
[15]  [J]. Acta Mechanica Sinica, 1985, 17(5): 419-425.
[16]  Kim H Y, Chun J H. The recoiling of liquid droplets upon collision with solid surfaces[J]. Physics of Fluids, 2001, 13(3): 643-659.
[17]  Fujimoto H, Ito S, Takezaki I. Experimental study of successive collision of two water droplets with a solid[J]. Experiments in Fluids, 2002, 33: 500-502.
[18]  权生林, 李维仲, 朱卫英. 水滴撞击固体表面实验研究[J]. 大连理工大学学报, 2009, 49(6): 832-836. Quan Shenglin, Li Weizhong, Zhu Weiying. Experimental study of water droplet impacted onto solid surfaces[J]. Journal of Dalian University of Technology, 2009, 49(6): 832-836.
[19]  Li Daming, Bai Ling, Li Lingling, et al. SPH modeling of droplet impact on solid boundary[J]. Transactions of Tianjin University, 2014, 20: 112-117.
[20]  沈胜强, 崔艳艳, 郭亚丽. 液滴撞击等温斜面的数值模拟[J]. 热科学与技术, 2009, 8(3): 194-197. Shen Shengqiang, Cui Yanyan, Guo Yali. Numerical simulation of droplet striking on inclined isothermal surface[J]. Journal of Thermal Science and Technology, 2009, 8(3): 194-197.
[21]  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, 11(1): 8-12. Liang Gangtao, Shen Shengqiang, Yang Yong. CLSVOF simulation for splashing of single drop impact on flat liquid film[J]. Journal of Thermal Science and Technology, 2012, 11(1): 8-12.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133