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DOI	10.1016/j.compfluid.2021.104844
	Droplet impact on nano-textured bumps: Topology effects
	Ahmad, Shakeel; Zhao, Jiyun; Shahzad, Aamer; Qadri, Muhammad Nafees Mumtaz; Tang, Hui
通讯作者	Tang, H (corresponding author), Hong Kong Polytech Univ, Res Ctr Fluid Struct Interact, Dept Mech Engn, Hong Kong, Peoples R China.
来源期刊	COMPUTERS & FLUIDS
ISSN	0045-7930
EISSN	1879-0747
出版年	2021
卷号	218
英文摘要	Using the lattice Boltzmann method (LBM), the dynamics of a single droplet impacting on desert-beetle inspired, super-hydrophobic, nano-textured bumps was numerically investigated. The focus was placed on the effects of post height, inter-post spacing, bump radius of curvature and impact velocity represented by the Weber number. Three droplet states after the impact were captured, i.e., the suspended Cassie state, the sticky Wenzel state and rebound. The interfaces among these states were then determined in parametric maps generated from the current study. Since the droplets in the Cassie state can be easily removed from the surface and thus favorable for water collection. The conditions satisfied for this state by the geometrical parameters and the Weber number were explored. The results showed that, at moderate impact speeds, droplets impacting on nano-textured bumps with sufficiently high posts or sufficiently small inter-post spacing were generally in the Cassie state and hence favorable for water collection. If these conditions are satisfied, the bump surface curvature only plays a marginal role. (C) 2021 Elsevier Ltd. All rights reserved.
英文关键词	Nano-textured bump Droplet impact Water collection Lattice Boltzmann method
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000637218700008
WOS关键词	LATTICE BOLTZMANN METHOD ; SUPERHYDROPHOBIC SURFACES ; WATER ; DYNAMICS ; SIMULATIONS
WOS类目	Computer Science, Interdisciplinary Applications ; Mechanics
WOS研究方向	Computer Science ; Mechanics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349884
作者单位	[Ahmad, Shakeel; Tang, Hui] Hong Kong Polytech Univ, Res Ctr Fluid Struct Interact, Dept Mech Engn, Hong Kong, Peoples R China; [Ahmad, Shakeel; Zhao, Jiyun] City Univ Hong Kong, Dept Mech Engn, Hong Kong, Peoples R China; [Shahzad, Aamer; Qadri, Muhammad Nafees Mumtaz] Natl Univ Sci & Technol, Coll Aeronaut Engn, Dept Aerosp Engn, Islamabad, Pakistan
推荐引用方式 GB/T 7714	Ahmad, Shakeel,Zhao, Jiyun,Shahzad, Aamer,et al. Droplet impact on nano-textured bumps: Topology effects[J],2021,218.
APA	Ahmad, Shakeel,Zhao, Jiyun,Shahzad, Aamer,Qadri, Muhammad Nafees Mumtaz,&Tang, Hui.(2021).Droplet impact on nano-textured bumps: Topology effects.COMPUTERS & FLUIDS,218.
MLA	Ahmad, Shakeel,et al."Droplet impact on nano-textured bumps: Topology effects".COMPUTERS & FLUIDS 218(2021).