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Lattice Boltzmann simulation of droplets coalescence in a film patterning process on nonideal surfaces
Cheng XD(程晓鼎)1,2; Zhu YL(朱云龙)3; Zhang L(张磊)1; Zhang DY(张丁一)1; Ku T(库涛)1
Department数字工厂研究室
Source PublicationComputers and Fluids
ISSN0045-7930
2018
Volume176Pages:68-78
Indexed BySCI ; EI
EI Accession number20183705807725
WOS IDWOS:000453618600005
Contribution Rank1
KeywordLattice Boltzmann Method Contact Angle Film Droplets Coalescence
Abstract

3D numerical simulations are performed by depositing multiple droplets simultaneously to analyze the coalescence dynamics during a film formation process on a nonideal surface. This study aims to investigate the effects of droplet spacing(p), advancing contact angle(θA) and receding contact angle(θR) on the morphologies of coalesced films. A pseudopotential based multi-relaxation-time lattice Boltzmann model is employed for computations. With θR fixed at 0° three different morphologies of film edges are observed with p or θA increases. It is found that the spread width of the connecting ridge undergoes severe changes as p and θA varies. Simulations indicate that θR is a key parameter to affect the retracting behaviors of the contact line, resulting in different outcomes of the coalescence process. When θR is prescribed slightly larger than the minimum value of instantaneous contact angle during the deformation process, the uniformity of film can be largely improved.

Language英语
WOS SubjectComputer Science, Interdisciplinary Applications ; Mechanics
WOS KeywordMULTIPHASE FLOW ; IMPACT ; MODEL ; SUBSTRATE ; DYNAMICS ; SCHEME
WOS Research AreaComputer Science ; Mechanics
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Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/22754
Collection数字工厂研究室
Corresponding AuthorZhu YL(朱云龙); Zhang L(张磊)
Affiliation1.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.School of electronical engineering and intelligentization, Dongguan University of Technology, Dongguan 523000, China
Recommended Citation
GB/T 7714
Cheng XD,Zhu YL,Zhang L,et al. Lattice Boltzmann simulation of droplets coalescence in a film patterning process on nonideal surfaces[J]. Computers and Fluids,2018,176:68-78.
APA Cheng XD,Zhu YL,Zhang L,Zhang DY,&Ku T.(2018).Lattice Boltzmann simulation of droplets coalescence in a film patterning process on nonideal surfaces.Computers and Fluids,176,68-78.
MLA Cheng XD,et al."Lattice Boltzmann simulation of droplets coalescence in a film patterning process on nonideal surfaces".Computers and Fluids 176(2018):68-78.
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