scholarly journals Thin film flow down a porous substrate in the presence of an insoluble surfactant: Stability analysis

2013 ◽  
Vol 25 (2) ◽  
pp. 022101 ◽  
Author(s):  
Anjalaiah ◽  
R. Usha ◽  
S. Millet
Keyword(s):  
Thin Film ◽  
Stability Analysis ◽  
Film Flow ◽  
Porous Substrate ◽  
Thin Film Flow ◽  
Insoluble Surfactant

Stability analysis of thin film flow along a heated porous wall

2009 ◽  
Vol 21 (1) ◽  
pp. 014103 ◽  
Author(s):  
Uwe Thiele ◽  
Benoît Goyeau ◽  
Manuel G. Velarde
Keyword(s):  
Thin Film ◽  
Stability Analysis ◽  
Film Flow ◽  
Porous Wall ◽  
Thin Film Flow

scholarly journals Effect of periodic grooving topography on dynamics of Insoluble surfactant-laden thin film flow

2014 ◽  
Vol 63 (22) ◽  
pp. 224703
Author(s):  
Li Chun-Xi ◽  
Chen Peng-Qiang ◽  
Ye Xue-Min
Keyword(s):  
Thin Film ◽  
Film Flow ◽  
Thin Film Flow ◽  
Insoluble Surfactant

scholarly journals Optimal Homotopy Asymptotic Method for a thin film flow of a pseudo plastic fluid draining down or lifting up on a cylindrical surface

2013 ◽  
Vol 19 (4) ◽  
pp. 513-527
Author(s):  
Kamran Alam ◽  
M.T. Rahim ◽  
S. Islam ◽  
A.M. Sidiqqui
Keyword(s):  
Thin Film ◽  
Asymptotic Method ◽  
Cylindrical Surface ◽  
Film Flow ◽  
Vertical Cylinder ◽  
Stokes Number ◽  
Velocity Shear ◽  
Thin Film Flow ◽  
Fluid Velocities ◽  
Optimal Homotopy Asymptotic Method

In this study, the pseudo plastic model is used to obtain the solution for the steady thin film flow on the outer surface of long vertical cylinder for lifting and drainage problems. The non-linear governing equations subject to appropriate boundary conditions are solved analytically for velocity profiles by a modified homotopy perturbation method called the Optimal Homotopy Asymptotic method. Expressions for the velocity profile, volume flux, average velocity, shear stress on the cylinder, normal stress differences, force to hold the vertical cylindrical surface in position, have been derived for both the problems. For the non-Newtonian parameter ?=0, we retrieve Newtonian cases for both the problems. We also plotted and discussed the affect of the Stokes number St, the non-Newtonian parameter ? and the thickness ? of the fluid film on the fluid velocities.

scholarly journals MHD thin film flow of the Oldroyd-B fluid together with bioconvection and activation energy

2021 ◽  
pp. 101218
Author(s):  
Farhan Ahmad ◽  
Taza Gul ◽  
Imran Khan ◽  
Anwar Saeed ◽  
Mahmoud Mohamed Selim ◽  
...  
Keyword(s):  
Thin Film ◽  
Activation Energy ◽  
Film Flow ◽  
Thin Film Flow

Axisymmetric thin film flow on a flat disk foil subject to intense radial electric fields

2022 ◽  
Vol 34 (1) ◽  
pp. 012109
Author(s):  
Z. Wang ◽  
C. Zhang ◽  
H. Xia ◽  
Q. Xie ◽  
W. Deng
Keyword(s):  
Thin Film ◽  
Electric Fields ◽  
Film Flow ◽  
Thin Film Flow ◽  
Flat Disk
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