Effect of viscoelasticity on stability of liquid curtain

Alireza Mohammad Karim; Wieslaw J Suszynski; William B. Griffith; Saswati Pujari; Lorraine F. Francis; Marcio S. Carvalho

doi:10.1016/j.jnnfm.2018.03.019

Effect of viscoelasticity on stability of liquid curtain

Alireza Mohammad Karim, Wieslaw J Suszynski, William B. Griffith, Saswati Pujari, Lorraine F. Francis, Marcio S. Carvalho

Chemical Engineering and Materials Science

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The effect of viscoelastic forces on the hole growth speed in a liquid curtain and on the critical flow rate below which a liquid curtain breaks was studied by high-speed visualization. Different Boger-like aqueous solutions were used as the viscoelastic liquids. The expansion of a hole initiated within the liquid curtain leads to the curtain breakup. The results show a strong stabilizing effect of the viscoelastic forces; the minimum flow rate for stable curtain falls drastically by adding small amounts of high molecular weight polymer. The results reveal that the mechanisms for the increased stability are that the initiation of the hole is delayed and the speed at which it expands is also reduced, as the viscoelastic forces become stronger.

Original language	English (US)
Pages (from-to)	83-94
Number of pages	12
Journal	Journal of Non-Newtonian Fluid Mechanics
Volume	257
DOIs	https://doi.org/10.1016/j.jnnfm.2018.03.019
State	Published - Jul 2018

Bibliographical note

Funding Information:
We would like to acknowledge the financial support from the Dow Chemical Company .

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Capillary
Curtain stability
Liquid film
Viscoelasticity

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title = "Effect of viscoelasticity on stability of liquid curtain",

abstract = "The effect of viscoelastic forces on the hole growth speed in a liquid curtain and on the critical flow rate below which a liquid curtain breaks was studied by high-speed visualization. Different Boger-like aqueous solutions were used as the viscoelastic liquids. The expansion of a hole initiated within the liquid curtain leads to the curtain breakup. The results show a strong stabilizing effect of the viscoelastic forces; the minimum flow rate for stable curtain falls drastically by adding small amounts of high molecular weight polymer. The results reveal that the mechanisms for the increased stability are that the initiation of the hole is delayed and the speed at which it expands is also reduced, as the viscoelastic forces become stronger.",

keywords = "Capillary, Curtain stability, Liquid film, Viscoelasticity",

author = "{Mohammad Karim}, Alireza and Suszynski, {Wieslaw J} and Griffith, {William B.} and Saswati Pujari and Francis, {Lorraine F.} and Carvalho, {Marcio S.}",

note = "Funding Information: We would like to acknowledge the financial support from the Dow Chemical Company . Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = jul,

doi = "10.1016/j.jnnfm.2018.03.019",

language = "English (US)",

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T1 - Effect of viscoelasticity on stability of liquid curtain

AU - Mohammad Karim, Alireza

AU - Suszynski, Wieslaw J

AU - Griffith, William B.

AU - Pujari, Saswati

AU - Francis, Lorraine F.

AU - Carvalho, Marcio S.

PY - 2018/7

Y1 - 2018/7

N2 - The effect of viscoelastic forces on the hole growth speed in a liquid curtain and on the critical flow rate below which a liquid curtain breaks was studied by high-speed visualization. Different Boger-like aqueous solutions were used as the viscoelastic liquids. The expansion of a hole initiated within the liquid curtain leads to the curtain breakup. The results show a strong stabilizing effect of the viscoelastic forces; the minimum flow rate for stable curtain falls drastically by adding small amounts of high molecular weight polymer. The results reveal that the mechanisms for the increased stability are that the initiation of the hole is delayed and the speed at which it expands is also reduced, as the viscoelastic forces become stronger.

AB - The effect of viscoelastic forces on the hole growth speed in a liquid curtain and on the critical flow rate below which a liquid curtain breaks was studied by high-speed visualization. Different Boger-like aqueous solutions were used as the viscoelastic liquids. The expansion of a hole initiated within the liquid curtain leads to the curtain breakup. The results show a strong stabilizing effect of the viscoelastic forces; the minimum flow rate for stable curtain falls drastically by adding small amounts of high molecular weight polymer. The results reveal that the mechanisms for the increased stability are that the initiation of the hole is delayed and the speed at which it expands is also reduced, as the viscoelastic forces become stronger.

KW - Capillary

KW - Curtain stability

KW - Liquid film

KW - Viscoelasticity

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JO - Journal of Non-Newtonian Fluid Mechanics

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ER -

Effect of viscoelasticity on stability of liquid curtain

Abstract

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Keywords

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