液滴撞击超疏水表面的能量耗散机制

doi:10.7527/S1000-6893.2016.0278

飞机结冰致灾与防护专栏

本期目录 | 过刊浏览 | 高级检索

前一篇 | 后一篇

液滴撞击超疏水表面的能量耗散机制

刘森云¹, 沈一洲^1,2, 朱春玲¹, 陶杰², 谢磊³

1. 南京航空航天大学航空宇航学院, 南京 210016;
2. 南京航空航天大学材料科学与技术学院, 南京 210016;
3. 中航工业飞机股份有限公司研发中心环控救生所, 汉中 723213

收稿日期:2016-08-26 修回日期:2016-10-26 出版日期:2017-02-15 发布日期:2016-10-27
通讯作者: 朱春玲,E-mail:clzhu@nuaa.edu.cn E-mail:clzhu@nuaa.edu.cn
基金资助:
国家“973”计划（2015CB755800）；国家自然科学基金（11372335）；博士后创新人才支持计划（BX201600073）；江苏高校优势学科建设工程

Energy dissipation mechanism of droplets impacting superhydrophobic surfaces

LIU Senyun¹, SHEN Yizhou^1,2, ZHU Chunling¹, TAO Jie², XIE Lei³

1. College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
3. Institute of Environment Controlling and Life Saving, AVIC Aviation Aircraft Co. Ltd. R & D Center, Hanzhong 723213, China

Received:2016-08-26 Revised:2016-10-26 Online:2017-02-15 Published:2016-10-27
Supported by:
National Basic Research Program of China (2015CB755800); National Natural Science Foundation of China (11372335); National Postdoctoral Program for Innovative Talents (BX201600073); Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions

摘要/Abstract

摘要：

针对飞机表面易结冰部位设计超疏水表面，可以大幅度减轻对高能耗防/除冰技术的依赖程度，进而提高飞机的燃油经济性。主要通过实验研究与数值模拟的手段，分析讨论了液滴撞击分级粗糙结构超疏水表面过程中的能量耗散机制。以Ti6Al4V为基体经过喷砂处理形成微米级粗糙结构，然后在1 mol/L的低浓度NaOH溶液中水热生长一层一维纳米线，构建出微/纳米复合粗糙结构并氟化修饰获得超疏水表面。通过场发射扫描电镜（FE-SEM）观察了微观形貌的变化规律，利用动态视频接触角测量仪表征试样表面液滴表观接触角与接触角滞后。基于气液两相流动界面追踪的复合Level set-VOF方法，实现了液滴撞击超疏水表面过程的数值模拟。采用高速摄像技术记录了撞击液滴在超疏水表面的运动过程，实验验证了模拟方法与铺展计算模型的正确性，并详细讨论了液滴运动过程中的能量耗散问题，分析表明液滴撞击过程中的能量耗散主要取决于超疏水表面的动态润湿特性和润湿界面模型。

关键词: 超疏水表面, 撞击液滴, 数值模拟, 能量耗散, 润湿界面模型

Abstract:

Designing superhydrophobic surfaces on the icing locations of aircrafts can greatly reduce the dependence on the traditional high energy-consumption anti/de-icing technologies, so as to improve the fuel efficiency of aircrafts. The aim of the present work is to analyze the energy dissipation mechanism of droplets impacting on the hierarchical superhydrophobic surface based on experiments and numerical simulations. Ti6Al4V as the substrate is sandblasted to construct the microscale rough structure, and then is put in the 1 mol/L NaOH solution to thermally growth a layer of nanowires, obtaining the superhydrophobicity after the modification. The morphologies are observed by field emission scanning electron microscope (FE-SEM), and the two main wetting parameters (apparent contact angle and contact angle hysteresis) on superhydrophobicity are characterized via a dynamic video contact angle meter. Based on the pursuant composite Level set-VOF numerical method of gas-liquid phase interface, the contact process of a droplet impacting superhydrophobic surfaces can be reproduced with a numerical calculation. Experimentally, a high-speed camera is also used to record the moving process of the impacting droplet on the superhydrophobic surface to verify the correctness of the numerical model. Discussion of the energy dissipation during the moving process of the droplet demonstrates that the energy dissipation depends mainly on the dynamic wetting properties of the superhydrophobic surface and the wetting interfacial model.

Key words: superhydrophobic surfaces, impact droplet, numerical simulation, energy dissipation, wetting interfacial model

中图分类号:

V250.1

刘森云, 沈一洲, 朱春玲, 陶杰, 谢磊. 液滴撞击超疏水表面的能量耗散机制[J]. 航空学报, 2017, 38(2): 520710-520718.

LIU Senyun, SHEN Yizhou, ZHU Chunling, TAO Jie, XIE Lei. Energy dissipation mechanism of droplets impacting superhydrophobic surfaces[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(2): 520710-520718.

参考文献

[1] STYLE R W, DUFRESNE E R. Static wetting on deformable substrates, from liquids to soft solids[J]. Soft Matter, 2012, 8(27):7177-7184.
[2] WATSON G S, GELLENDER M, WATSON J A. Self-propulsion of dew drops on lotus leaves:a potential mechanism for self cleaning[J]. Biofouling, 2014, 30(4):427-434.
[3] LIU K, YAO X, JIANG L. Recent developments in bio-inspired special wettability[J]. Chemical Society Reviews, 2010, 39(8):3240-3255.
[4] YAN Y Y, GAO N, BARTHLOTT W. Mimicking natural superhydrophobic surfaces and grasping the wetting process:A review on recent progress in preparing superhydrophobic surfaces[J]. Advances in Colloid and Interface Science, 2011, 169(2):80-105.
[5] GUO Z, ZHOU F, HAO J, et al. Stable biomimetic super-hydrophobic engineering materials[J]. Journal of the American Chemical Society, 2005, 127(45):15670-15671.
[6] TSAI P, PACHECO S, PIRAT C, et al. Drop impact upon micro-and nanostructured superhydrophobic surfaces[J]. Langmuir, 2009, 25(20):12293-12298.
[7] TRAN T, STAAT H J J, SUSARREY-ARCE A, et al. Droplet impact on superheated micro-structured surfaces[J]. Soft Matter, 2013, 9(12):3272-3282.
[8] LIU Y, WHYMAN G, BORMASHENKO E, et al. Controlling drop bouncing using surfaces with gradient features[J]. Applied Physics Letters, 2015, 107(5):051604.
[9] LIU Y, MOEVIUS L, XU X, et al. Pancake bouncing on superhydrophobic surfaces[J]. Nature Physics, 2014, 10(7):515-519.
[10] AUSSILLOUS P, QUÉRÉ D. Liquid marbles[J]. Nature, 2001, 411(6840):924-927.
[11] SHEN Y, TAO J, TAO H, et al. Superhydrophobic Ti6Al4V surfaces with regular array patterns for antiicing applications[J]. RSC Advances, 2015, 5(41):32813-32818.
[12] HU C, LIU S, LI B, et al. Micro-/nanometer rough structure of a superhydrophobic biodegradable coating by electrospraying for initial anti-bioadhesion[J]. Advanced Healthcare Materials, 2013, 2(10):1314-1321.
[13] BLAKE J, THOMPSON D, RAPS D, et al. Simulating the freezing of supercooled water droplets impacting a cooled substrate[J]. AIAA Journal, 2015, 53(7):1725-1739.
[14] BRACKBILL J U, KOTHE D B, ZEMACH C. A continuum method for modeling surface tension[J]. Journal of Computational Physics, 1992, 100(2):335-354.
[15] LIU M, ZHENG Y, ZHAI J, et al. Bioinspired super-antiwetting interfaces with special liquid-solid adhesion[J]. Accounts of Chemical Research, 2009, 43(3):368-377.
[16] BORMASHENKO E, STAROV V. Impact of surface forces on wetting of hierarchical surfaces and contact angle hysteresis[J]. Colloid and Polymer Science, 2013, 291(2):343-346.
[17] SPORI D M, DROBEK T, ZURCHER S, et al. Cassie-state wetting investigated by means of a hole-to-pillar density gradient[J]. Langmuir, 2010, 26(12):9465-9473.
[18] FENG L, LI S, LI H, et al. Super-hydrophobic surface of aligned polyacrylonitrile nanofibers[J]. Angewandte Chemie, 2002, 114(7):1269-1271.
[19] RIOBOO R, VOUE M, VAILLANT A, et al. Droplet impact on porous superhydrophobic polymer surface[J]. Langmuir, 2008, 24(24):14074-14077.
[20] 宋云超, 宁智, 孙春华, 等. 液滴撞击壁面铺展运动的数值模拟[J]. 燃烧科学与技术, 2013, 19(6):549-556. SONG Y C, NING Z, SUN C H, et al. Numerical simulation of spreading of a droplet impacting on a wall[J]. Journal of Combustion Science and Technology, 2013, 19(6):549-556(in Chinese).
[21] 胡海豹, 陈立斌, 黄苏和,等. 水滴撞击黄铜基超疏水表面的破碎行为研究[J]. 摩擦学学报, 2013, 33(5):449-455. HU H B, CHEN L B, HUANG S H, et al. Breakup phenomenon of droplets impacting on a superhydrophobic brass surface[J]. Tribology, 2013, 33(5):449-455(in Chinese).
[22] LEE D J, KIM HM, SONG Y S, et al. Water droplet bouncing and superhydrophobicity induced by multiscale hierarchical nanostructures[J]. ACS Nano, 2012, 6(9):7656-7664.
[23] WANG X, PENG X, MIN J, et al. Hysteresis of contact angle at liquid-solid interface[J]. Journal of Basic Science and Engineering, 2001, 9(4):343-353.
[24] PASANDIDEH-FARD M, QIAO Y M, CHANDRA S, et al. Capillary effects during droplet impact on a solid surface[J]. Physics of Fluids, 1996, 8(3):650-659.

E-mail：hkxb@buaa.edu.cn

关于我们

期刊社服务

专业学科

封面文章

友情链接

主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

液滴撞击超疏水表面的能量耗散机制

Energy dissipation mechanism of droplets impacting superhydrophobic surfaces

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	夏侯唐凡, 陈江涛, 邵志栋, 吴晓军, 刘宇. 随机和认知不确定性框架下的CFD模型确认度量综述[J]. 航空学报, 2022, 43(8): 25716-025716.
[2]	杨建凯, 顾冬冬, 葛庆, 檀晨晨, 文雨. 铝合金激光增材制造支撑布局及精确成形机制[J]. 航空学报, 2022, 43(4): 525331-525331.
[3]	徐孟嘉, 刘博生, 毕晓阳, 王振民. 激光加工双级结构对Al/CFRPEEK接头组织及性能的影响[J]. 航空学报, 2022, 43(2): 624620-624620.
[4]	姜有旭, 李杰, 杨钊. 某层流机翼验证机风洞试验数据修正方法[J]. 航空学报, 2022, 43(11): 526814-526814.
[5]	段俊亦, 童福林, 李新亮, 刘洪伟. 压缩-膨胀湍流边界层平均摩阻分解[J]. 航空学报, 2022, 43(1): 625915-625915.
[6]	刘朋欣, 袁先旭, 孙东, 傅亚陆, 李辰. 高温化学非平衡湍流边界层直接数值模拟[J]. 航空学报, 2022, 43(1): 124877-124877.
[7]	沈鹏飞, 刘朋欣, 孙东, 袁先旭. 马赫6柱-裙构型激波/湍流边界层干扰摩阻统计特性[J]. 航空学报, 2022, 43(1): 626005-626005.
[8]	刘朋欣, 袁先旭, 梁飞, 李辰, 孙东. 高温化学非平衡湍流边界层脉动量象限分析[J]. 航空学报, 2021, 42(S1): 726338-726338.
[9]	鲍俊, 王瑜, 牛潜, 朱锡冬, 程建杰. 喷雾液滴撞击液膜影响参数及流动机理分析[J]. 航空学报, 2021, 42(S1): 726360-726360.
[10]	陈崇沛, 梁剑寒, 关清帝, 高天运. 守恒型可压缩一维湍流方法及其在超声速标量混合层中的应用[J]. 航空学报, 2021, 42(S1): 726364-726364.
[11]	李青, 涂国华, 余钊圣, 林昭武, 李婷婷, 袁先旭. 惯性颗粒在非均匀加速流中的输运问题[J]. 航空学报, 2021, 42(S1): 726390-726390.
[12]	李成成, 李芳, 杨斌, 王莹. 等离子体激励抑制喷管分离流动数值模拟[J]. 航空学报, 2021, 42(7): 124547-124547.
[13]	刘宗兴, 刘军, 李维娜. 爆炸冲击载荷下典型机身结构动响应及破坏[J]. 航空学报, 2021, 42(2): 224252-224252.
[14]	孙东, 刘朋欣, 沈鹏飞, 童福林, 郭启龙. 马赫数6柱-裙激波/边界层干扰直接模拟[J]. 航空学报, 2021, 42(12): 124681-124681.
[15]	王方, 王煜栋, 姜胜利, 陈军, 唐军, 徐华胜, 李象远, 邢竞文, 高东硕, 金捷. AECSC-JASMIN湍流燃烧仿真软件研发和检验[J]. 航空学报, 2021, 42(12): 625003-625003.