Effect of soluble surfactants on vertical liquid film drainage

2019 ◽  
Vol 31 (3) ◽  
pp. 032105 ◽  
Keyword(s):  
Liquid Film ◽  
Film Drainage ◽  
Soluble Surfactants

scholarly journals Measurement of thin liquid film drainage using a novel high-speed impedance analyzer

1998 ◽  
Vol 69 (9) ◽  
pp. 3232-3239 ◽  
Author(s):  
Kevin O. Hool ◽  
Robert C. Saunders ◽  
Harry J. Ploehn
Keyword(s):  
Liquid Film ◽  
High Speed ◽  
Thin Liquid Film ◽  
Impedance Analyzer ◽  
Film Drainage

Influence of bubble approach velocity on liquid film drainage between a bubble and a spherical particle

2018 ◽  
Vol 338 ◽  
pp. 140-144 ◽  
Author(s):  
Boris Albijanic ◽  
You Zhou ◽  
Bogale Tadesse ◽  
Laurence Dyer ◽  
Guang Xu ◽  
...  
Keyword(s):  
Liquid Film ◽  
Spherical Particle ◽  
Film Drainage ◽  
Approach Velocity

New insights into flotation mechanism of diasporic bauxite from a perspective of liquid film drainage

2021 ◽  
pp. 128178
Author(s):  
Ningning Zhang ◽  
Zhongyu Shi ◽  
Rui Han ◽  
Zhen Li ◽  
Songjiang Chen ◽  
...  
Keyword(s):  
Liquid Film ◽  
Film Drainage

Thin liquid film drainage: Ionic vs. non-ionic surfactants

2010 ◽  
Vol 343 (2) ◽  
pp. 584-593 ◽  
Author(s):  
Stoyan I. Karakashev ◽  
Dilyana S. Ivanova
Keyword(s):  
Liquid Film ◽  
Thin Liquid Film ◽  
Ionic Surfactants ◽  
Film Drainage

Effects of Surfactant on the Motion of a Large Bubble in a Capillary Tube

2011 ◽  
Author(s):  
Gokalp Gursel ◽  
Ufuk Olgac ◽  
Metin Muradoglu
Keyword(s):  
Film Thickness ◽  
Liquid Film ◽  
Evolution Equations ◽  
Stokes Equations ◽  
Capillary Tube ◽  
Navier Stokes ◽  
Large Bubble ◽  
Front Tracking Method ◽  
Wide Range ◽  
Soluble Surfactants

The finite-difference/front-tracking method is used to study the motion and deformation of a large bubble moving through a capillary tube in the presence of both insoluble and soluble surfactants. Emphasis is placed on the effects of surfactant on the liquid film thickness between the bubble and the tube wall. The numerical method is designed to solve the evolution equations of the interfacial and bulk surfactant concentrations coupled with the incompressible Navier-Stokes equations. A non-linear equation of state is used to relate interfacial surface tension to surfactant concentration at the interface. The film thickness is first computed for the clean bubble case and the results are compared with the lubrication theory in the limit of small capillary numbers, i.e., Ca ≪ 1, and found to be in good agreement with the predictions of Bretherton [1]. Thereafter, the method is used to investigate the effects of insoluble and soluble surfactants on the film thickness for a wide range of governing non-dimensional numbers. It is found that both the insoluble and soluble surfactants have a thickening effect on the liquid film, which compares well with both the experimental results of Krechetnikov and Homsy [2] and analytical predictions of Daripa and Pasa [3].

scholarly journals The effect of soluble surfactants on liquid film flow

2012 ◽  
Vol 395 ◽  
pp. 012165 ◽  
Author(s):  
A Georgantaki ◽  
M Vlachogiannis ◽  
V Bontozoglou
Keyword(s):  
Liquid Film ◽  
Film Flow ◽  
Liquid Film Flow ◽  
Soluble Surfactants
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