关于动静液滴聚结诱导跳跃的数值模拟
Numerical Simulation of Jump Induced by Coalescence of Static and Static Droplets
DOI: 10.12677/IJFD.2023.113008, PDF,   
作者: 王 帅, 肖翔域, 赵嘉毅*：上海理工大学，能源与动力工程学院，上海
关键词: 液滴；约束点；聚结；跳跃；Droplets； Restraint Points； Coalescence； Jumps
摘要: 为了探究初始速度和液滴之间约束点对运动液滴和静态液滴聚结引起的液滴跳跃的影响，我们采用单向有限元模型进行了模拟，并结合实验验证了仿真结果。结果表明：移动液滴的初始速度加速了跳跃过程中液滴变形，随着移动液滴的初速度增加，弹跳速度减小；随着约束点高度增加，弹跳速度增加。聚结液滴总动能的主要来源从释放的表面能转变为运动液滴的初始动能，但弹跳动能占总动能的比例减小。此外，移动液滴的初始速度加剧了液滴变形，加速了聚结诱导跳跃的过程，但是抑制了跳跃高度，而约束点促进了液滴的弹跳。这项工作将为液滴跳跃行为带来新的见解，并促进其在相关领域的应用。
Abstract: In order to explore the effect of the initial velocity and the constraint point between droplets on the droplet jump caused by the agglomeration of moving droplets and static droplets, a one-way finite element model was used to simulate the droplet jump, and the simulation results were verified by experiments. The results show that the initial velocity of the moving droplet accelerates the droplet deformation during the jumping process, and the bouncing velocity decreases with the increase of u0 of the moving droplet. As the height of the constraint point increases, the bounding speed increases. The main source of total kinetic energy of the coalesced droplet changes from the released surface energy to the initial kinetic energy of the moving droplet, but the proportion of bouncing kinetic energy in total kinetic energy decreases. In addition, the initial velocity of the moving droplet increases the droplet deformation, and accelerates the coalescence-induced jump process, but inhibits the jump height, while the constraint point promotes the droplet bounce. This work will bring new insights into droplet jumping behavior and promote its application in related fields.
文章引用：王帅, 肖翔域, 赵嘉毅. 关于动静液滴聚结诱导跳跃的数值模拟[J]. 流体动力学, 2023, 11(3): 81-93. https://doi.org/10.12677/IJFD.2023.113008

参考文献

[1] Wisdom, K.M., Watson, J.A., Qu, X., Liu, F., Watson, G.S. and Chen, C.-H. (2013) Self-Cleaning of Superhydrophobic Surfaces by Self-Propelled Jumping Condensate. Proceedings of the National Academy of Sciences, 110, 7992-7997. [Google Scholar] [CrossRef] [PubMed]
[2] Dietz, C., Rykaczewski, K., Fedorov, A.G. and Joshi, Y. (2010) Visualization of Droplet Departure on a Superhydrophobic Surface and Implications to Heat Transfer Enhancement dur-ing Dropwise Condensation. Applied Physics Letters, 97, Article ID: 033104. [Google Scholar] [CrossRef] 
[3] Cheng, Y., Xu, J. and Sui, Y. (2016) Numerical Investigation of Coales-cence-Induced Droplet Jumping on Superhydrophobic Surfaces for Efficient Dropwise Condensation Heat Transfer. In-ternational Journal of Heat and Mass Transfer, 95, 506-516. [Google Scholar] [CrossRef] 
[4] Foulkes, T., Sett, S., Sokalski, P., Oh, J. and Miljkovic, N. (2020) Fundamental Limits of Jumping Droplet Heat Transfer. Applied Physics Letters, 116, Article ID: 093701. [Google Scholar] [CrossRef] 
[5] Boreyko, J.B. and Chen, C.-H. (2013) Vapor Chambers with Jumping-Drop Liquid Return from Superhydrophobic Condensers. International Journal of Heat and Mass Transfer, 61, 409-418. [Google Scholar] [CrossRef] 
[6] Timonen, J.V.I., Latikka, M., Leibler, L., Ras, R.H.A. and Ikkala, O. (2013) Switchable Static and Dynamic Self-Assembly of Magnetic Droplets on Superhydrophobic Sur-faces. Science, 341, 253-257. [Google Scholar] [CrossRef] [PubMed]
[7] Kelleher, S.M., Habimana, O., Lawler, J., O’Reilly, B., Daniels, S., Casey, E. and Cowley, A. (2016) Cicada Wing Surface Topography: An Investigation into the Bactericidal Properties of Nanostructural Features. ACS Applied Materials & Interfaces, 8, 14966-14974. [Google Scholar] [CrossRef] [PubMed]
[8] Watson, G.S., Gellender, M. and Watson, J.A. (2014) Self-Propulsion of Dew Drops on Lotus Leaves: A Potential Mechanism for Self Cleaning, Biofouling, 30, 427-434. [Google Scholar] [CrossRef] [PubMed]
[9] Xu, W., Zheng, H., Liu, Y., Zhou, X., Zhang, C., Song, Y., et al. (2020) A Droplet-Based Electricity Generator with High Instantaneous Power Density. Nature, 578, 392-396. [Google Scholar] [CrossRef] [PubMed]
[10] Zhong, H., Zhang, P., Li, Y., Yang, X., Zhao, Y. and Wang, Z. (2020) Highly Solar-Reflective Structures for Daytime Radiative Cooling under High Humidity. ACS Applied Materials & Interfaces, 12, 51409-51417. [Google Scholar] [CrossRef] [PubMed]
[11] Zhang, Q., He, M., Chen, J., Wang, J., Song, Y. and Jiang, L. (2013) Anti-Icing Surfaces Based on Enhanced Self-Propelled Jumping of Condensed Water Microdroplets. Chemical Commu-nications, 49, 4516-4518. [Google Scholar] [CrossRef] [PubMed]
[12] Boreyko, J.B. and Collier, C.P. (2013) Delayed Frost Growth on Jump-ing-Drop Superhydrophobic Surfaces. ACS Nano, 7, 1618-1627. [Google Scholar] [CrossRef] [PubMed]
[13] Li, N., Pan, L.M., Wang, L., Huang, Y.P. and Yuan, D.W. (2022) Molecular Dynamics Study on the Wettability of the Lithium Droplet and Tungsten Surface. Langmuir, 38, 2502-2514. [Google Scholar] [CrossRef] [PubMed]
[14] Boreyko, J.B. and Chen, C.H. (2009) Self-Propelled Dropwise Condensate on Superhydrophobic Surfaces. Physical Review Letters, 103, Article ID: 184501. [Google Scholar] [CrossRef] 
[15] Chen, Y. and Lian, Y. (2018) Numerical Investigation of Coalescence-Induced Self-Propelled Behavior of Droplets on Non-Wetting Surfaces. Physics of Fluids, 30, Article ID: 112102. [Google Scholar] [CrossRef] 
[16] Li, S., Chu, F., Zhang, J., Brutin, D. and Wen, D. (2020) Droplet Jumping Induced by Coalescence of a Moving Droplet and a Static One: Effect of Initial Velocity. Chemical Engineering Science, 211, Article ID: 115252. [Google Scholar] [CrossRef] 
[17] Liu, X. and Cheng, P. (2015) 3D Multiphase Lattice Boltzmann Simulations for Morphological Effects on Self-Propelled Jumping of Droplets on Textured Superhydrophobic Surfaces. International Communications in Heat and Mass Transfer, 64, 7-13. [Google Scholar] [CrossRef] 
[18] Attarzadeh, R. and Dolatabadi, A. (2017) Coales-cence-Induced Jumping of Micro-Droplets on Heterogeneous Superhydrophobic Surfaces. Physics of Fluids, 29, Article ID: 012104. [Google Scholar] [CrossRef] 
[19] Wang, K., Liang, Q., Jiang, R., Zheng, Y., Lan, Z. and Ma, X. (2016) Self-Enhancement of Droplet Jumping Velocity: The Interaction of Liquid Bridge and Surface Texture. RSC Ad-vances, 6, 99314-99321. [Google Scholar] [CrossRef] 
[20] Vahabi, H., Wang, W., Mabry, J.M. and Kota, A.K. (2018) Coales-cence-Induced Jumping of Droplets on Superomniphobic Surfaces with Macrotexture. Science Advances, 4, eaau3488. [Google Scholar] [CrossRef] [PubMed]
[21] Zhao, C.Y., Yan, X., Wang, Z.K., Huang, Z.Y., Bo, H.L. and Chen, F. (2023) When Coalescing Droplets Jump: A Unified Energy Conversion Model Incorporating Droplet Size and Surface Adhesion. Physics of Fluids, 35, Article ID: 052001. [Google Scholar] [CrossRef] 
[22] Li, J., Yang, K.H., Liang, Y.H. and Liu, C.B. (2022) Hydrodynamic Analysis of the Energy Dissipation of Droplets on Vibrating Superhy-drophobic Surfaces. International Communications in Heat and Mass Transfer, 137, Article ID: 106264. [Google Scholar] [CrossRef] 
[23] Abubakar, A.A., Yilbas, B.S., A-Qahtani, M.H., Hassan, G., Yakubu, M., Bahatab, S. and Adukwu, J.A.E. (2021) Experimental and Model Studies of Various Size Wa-ter Droplet Impacting on a Hydrophobic Surface. Journal of Fluids Engineering-Transactions of the ASME, 143, Article ID: 061402. [Google Scholar] [CrossRef] 
[24] Sun, K., Shu, L.Y., Jia, F.F., Li, Z. and Wang, T.Y. (2022) Vibration-Induced Detachment of Droplets on Superhydrophobic Surfaces. Physics of Fluids, 34, Article ID: 053319. [Google Scholar] [CrossRef] 
[25] Cha, H., Chun, J.M., Sotelo, J. and Miljkovic, N. (2016) Focal Plane Shift Imaging for the Analysis of Dynamic Wetting Processes. ACS Nano, 10, 8223-8232. [Google Scholar] [CrossRef] [PubMed]
[26] Enright, R., Miljkovic, N., Dou, N., Nam, Y. and Wang, E.N. (2013) Condensation on Superhydrophobic Copper Oxide Nanostructures. Journal of Heat Transfer, 135, Article ID: 091304. [Google Scholar] [CrossRef] 
[27] Yan, X., Zhang, L., Sett, S., Feng, L., Zhao, C., Huang, Z., Va-habi, H., Kota, A.K., Chen, F. and Miljkovic, N. (2019) Droplet Jumping: Effects of Droplet Size, Surface Structure, Pinning, and Liquid Properties. ACS Nano, 13, 1309-1323. [Google Scholar] [CrossRef] [PubMed]
[28] Gao, S. and Wu, X. (2022) Numerical Investigation on Coales-cence-Induced Jumping of Centripetal Moving Droplets. Langmuir, 38, 12674-12681. [Google Scholar] [CrossRef] [PubMed]

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