Modeling and simulations of drop pinch-off from liquid crystal filaments and the leaky liquid crystal faucet immersed in viscous fluids

ISCAS OpenIR

	Modeling and simulations of drop pinch-off from liquid crystal filaments and the leaky liquid crystal faucet immersed in viscous fluids
	Yang, Xiaofeng; Forest, M. Gregory; Li, Huiyuan; Liu, Chun; Shen, Jie; Wang, Qi; Chen, Falai
	2013
发表期刊	JOURNAL OF COMPUTATIONAL PHYSICS
ISSN	0021-9991
卷号	236 页码:1-14
摘要	An energy-based, phase field model is developed for the coupling of two incompressible, immiscible complex fluid phases, in particular a nematic liquid crystal phase in a viscous fluid phase. The model consists of a system of coupled nonlinear partial differential equations for conservation of mass and momentum, phase transport, and interfacial boundary conditions. An efficient and easy-to-implement numerical scheme is developed and implemented to extend two benchmark fluid mechanical problems to incorporate a liquid crystal phase: filament breakup under the influence of capillary force and the gravity-driven, dripping faucet. We explore how the distortional elasticity and nematic anchoring at the liquid crystal-air interface modify the capillary instability in both problems. For sufficiently weak distortional elasticity, the effects are perturbative of viscous fluid experiments and simulations. However, above a Frank elasticity threshold, the model predicts a transition to the beads-on-a-string phenomenon associated with polymeric fluid filaments. Published by Elsevier Inc.; An energy-based, phase field model is developed for the coupling of two incompressible, immiscible complex fluid phases, in particular a nematic liquid crystal phase in a viscous fluid phase. The model consists of a system of coupled nonlinear partial differential equations for conservation of mass and momentum, phase transport, and interfacial boundary conditions. An efficient and easy-to-implement numerical scheme is developed and implemented to extend two benchmark fluid mechanical problems to incorporate a liquid crystal phase: filament breakup under the influence of capillary force and the gravity-driven, dripping faucet. We explore how the distortional elasticity and nematic anchoring at the liquid crystal-air interface modify the capillary instability in both problems. For sufficiently weak distortional elasticity, the effects are perturbative of viscous fluid experiments and simulations. However, above a Frank elasticity threshold, the model predicts a transition to the beads-on-a-string phenomenon associated with polymeric fluid filaments. Published by Elsevier Inc.
收录类别	SCI
关键词	Phase Field Model Drop Pinch-off Liquid Crystal Filament
部门归属	[Yang, Xiaofeng; Wang, Qi] Univ S Carolina, Dept Math, Columbia, SC 29083 USA. [Forest, M. Gregory] Univ N Carolina, Dept Math, Inst Adv Mat Nanosci & Technol, Chapel Hill, NC 27599 USA. [Li, Huiyuan] Chinese Acad Sci, Inst Software, Beijing 100090, Peoples R China. [Liu, Chun] Penn State Univ, Dept Math, University Pk, PA 16802 USA. [Shen, Jie] Purdue Univ, Dept Math, W Lafayette, IN 47907 USA. [Chen, Falai] Univ Sci & Technol China, Dept Math, Hefei 230026, Anhui, Peoples R China.
语种	英语
WOS记录号	WOS:000314801500002
引用统计	被引频次：48[WOS] [WOS记录] [WOS相关记录]
内容类型	期刊论文
URI标识	http://ir.iscas.ac.cn/handle/311060/16944
专题	中国科学院软件研究所
推荐引用方式 GB/T 7714	Yang, Xiaofeng,Forest, M. Gregory,Li, Huiyuan,et al. Modeling and simulations of drop pinch-off from liquid crystal filaments and the leaky liquid crystal faucet immersed in viscous fluids[J]. JOURNAL OF COMPUTATIONAL PHYSICS,2013,236:1-14.
APA	Yang, Xiaofeng.,Forest, M. Gregory.,Li, Huiyuan.,Liu, Chun.,Shen, Jie.,...&Chen, Falai.(2013).Modeling and simulations of drop pinch-off from liquid crystal filaments and the leaky liquid crystal faucet immersed in viscous fluids.JOURNAL OF COMPUTATIONAL PHYSICS,236,1-14.
MLA	Yang, Xiaofeng,et al."Modeling and simulations of drop pinch-off from liquid crystal filaments and the leaky liquid crystal faucet immersed in viscous fluids".JOURNAL OF COMPUTATIONAL PHYSICS 236(2013):1-14.