Critical condition for bubble breakup in a microfluidic flow-focusing junction - Details

author：

Wang, X. (Wang, X..) ^[1] | Zhu, C. (Zhu, C..) ^[2] | Fu, T. (Fu, T..) ^[3] | Qiu, T. (Qiu, T..) ^[4] | Ma, Y. (Ma, Y..) ^[5]

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Abstract：

The　critical　condition　for　bubble　breakup　in　a　microfluidic　flow-focusing　junction　was　studied　in　this　work.　The　experiments　were　conducted　in　a　square　microchannel　of　400　μm　wide.　The　critical　condition　for　bubble　breakup　was　investigated　by　varying　the　bubble　length　l0,　liquid　viscosity　μ,　velocity　of　the　liquid　from　the　main　channel　of　the　flow-focusing　junction　u1,and　velocity　of　the　liquid　from　the　side　channels　of　the　junction　u2.　By　analyzing　the　effects　of　these　factors　on　the　dynamical　evolution　of　gas-liquid　interface　for　bubble　deformation　and　breakup,　expressions　for　describing　the　bubble　deformation　and　breakup　time　were　established,　respectively.　On　the　basis　of　these　two　expressions,　the　critical　condition　for　the　bubble　breakup　in　a　microfluidic　flow-focusing　junction　was　deduced:　l0wc=1.5u1u20.75Ca2-0.13,　where　wcis　the　width　of　microchannel,　Ca2=　u2μ/γ,　and　γ　is　the　surface　tension.　©　2017　Elsevier　Ltd

Keyword：

Breakup; Bubble; Flow-focusing junction; Interfacial dynamics; Microfluidic

Community：

[ 1 ] [Wang, X.]State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
[ 2 ] [Wang, X.]School of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
[ 3 ] [Zhu, C.]State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
[ 4 ] [Fu, T.]State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
[ 5 ] [Qiu, T.]School of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
[ 6 ] [Ma, Y.]State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China

Reprint 's Address：

[Fu, T.]State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), School of Chemical Engineering and Technology, Tianjin UniversityChina

Email：

ttfu@tju.edu.cn

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Source ：

Chemical Engineering Science

ISSN： 0009-2509

Year： 2017

Volume： 164

Page： 178-187

3 . 3 0 6

JCR@2017

4 . 1 0 0

JCR@2023

ESI HC Threshold：226

JCR Journal Grade：1

CAS Journal Grade：2

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WoS CC Cited Count：

SCOPUS Cited Count： 20

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

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