Influence of gravity on narrow input forced drainage in 2D liquid foams

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 研究所（批量导入）

	Influence of gravity on narrow input forced drainage in 2D liquid foams
	Sun QiCheng; Ge Wei; Huang Jin
刊名	CHINESE SCIENCE BULLETIN
	2007-02-01
卷号	52 期号:3 页码:423-427
关键词	liquid foams forced drainage micro gravity soft condensed matter complex system
ISSN号	1001-6538
其他题名	Chin. Sci. Bull.
中文摘要	Liquid foam is a dense packing of gas bubbles in a small amount of liquid containing surfactants or other surface-active macromolecules, which is one of the highly organized materials and possesses hallmark rheological behaviour of soft matters. Forced foam drainage is the flow of constantly inputted liquid through the network of interstitial channels between bubbles under actions of gravity and capillarity. This process involves two mechanisms: minimal viscous flow dissipation of liquid and minimal surface energy of bubbles. For constant surfactant solution, viscous dissipation usually varies with gravity. This work reports simulations of 2D forced foam drainage with narrow input in a Hele-Shaw cell under 8 different gravities, g, ranging from 9.8 to 0 ms(-2). The spread of liquid both vertical due to gravity action, and horizontal due to capillary suction, is recorded over time. Positions of drainage wave fronts in both directions with time are found to be well described in the power law form, and the exponents are 0.536+5.29 x 10(-3)g and 0.479-7.27 x 10(-3)g, respectively, while the sum is close to a constant of 1.015 which is independent of gravity. For g=9.8 ms(-2), the calculated exponents are in good agreement with experimental results by Hutzler et al. and Wang.
英文摘要	Liquid foam is a dense packing of gas bubbles in a small amount of liquid containing surfactants or other surface-active macromolecules, which is one of the highly organized materials and possesses hallmark rheological behaviour of soft matters. Forced foam drainage is the flow of constantly inputted liquid through the network of interstitial channels between bubbles under actions of gravity and capillarity. This process involves two mechanisms: minimal viscous flow dissipation of liquid and minimal surface energy of bubbles. For constant surfactant solution, viscous dissipation usually varies with gravity. This work reports simulations of 2D forced foam drainage with narrow input in a Hele-Shaw cell under 8 different gravities, g, ranging from 9.8 to 0 ms(-2). The spread of liquid both vertical due to gravity action, and horizontal due to capillary suction, is recorded over time. Positions of drainage wave fronts in both directions with time are found to be well described in the power law form, and the exponents are 0.536+5.29 x 10(-3)g and 0.479-7.27 x 10(-3)g, respectively, while the sum is close to a constant of 1.015 which is independent of gravity. For g=9.8 ms(-2), the calculated exponents are in good agreement with experimental results by Hutzler et al. and Wang.
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	DIMENSIONS
收录类别	SCI
原文出处	://WOS:000245845900018
语种	英语
WOS记录号	WOS:000245845900018
公开日期	2013-10-15
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/3433]
专题	过程工程研究所_研究所（批量导入）
作者单位	Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Sun QiCheng,Ge Wei,Huang Jin. Influence of gravity on narrow input forced drainage in 2D liquid foams[J]. CHINESE SCIENCE BULLETIN,2007,52(3):423-427.
APA	Sun QiCheng,Ge Wei,&Huang Jin.(2007).Influence of gravity on narrow input forced drainage in 2D liquid foams.CHINESE SCIENCE BULLETIN,52(3),423-427.
MLA	Sun QiCheng,et al."Influence of gravity on narrow input forced drainage in 2D liquid foams".CHINESE SCIENCE BULLETIN 52.3(2007):423-427.