Journal ArticleDOI
Effect of Thermocapillarity on the Production of a Conducting Thin Film in the Presence of a Transverse Magnetic Field
B.S. Dandapat,P.C. Ray +1 more
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TLDR
In this paper, it was shown that the acting thermocapillary force has a profound effect in enhancing the thinning rate of the film even in the presence of large Hartmann number M. A physical explanation of this result is provided.Abstract:
The gradual development of a thin liquid film on the surface of a rotating disk is studied analytically when the thermocapillary force is in action in the presence of a transverse magnetic field. It is found that the acting thermocapillary force has a profound effect in enhancing the thinning rate of the film even in the presence of large Hartmann number M. A physical explanation of this result is provided. Large amounts of fluid are depleted in a small span of time when the Hartmann number M is small.read more
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Journal ArticleDOI
Asymptotic study of film thinning process on a spinning annular disk
TL;DR: In this paper, an axisymmetric flow of a thin liquid film on a rotating annular disk is considered, and an asymptotic solution for the free surface of the thin film is found using an expansion for the film thickness in powers of a small parameter characterizing the thickness in comparison to the inner disk radius.
Journal ArticleDOI
A study on entropy generation on thin film flow over an unsteady stretching sheet under the influence of magnetic field, thermocapillarity, thermal radiation and internal heat generation/absorption
TL;DR: In this paper, an analysis is carried out to study the entropy generation in a thin viscous fluid film on a stretching sheet embedded in a porous medium subject to a magnetic field and thermocapillarity force taking thermal radiation and internal heating/absorption into account.
Journal ArticleDOI
Spin coating in the presence of a transverse magnetic field and non-uniform rotation: a numerical study
B S Dandapat,G. C. Layek +1 more
TL;DR: In this paper, it was shown that the Hartmann or Eckman number has a stronger effect in thinning than that for Hartmann number and that a faster rate of thinning can be obtained if the spinner starts impulsively and then increases its spinning rate continuously.
Journal ArticleDOI
Unsteady flow of thin liquid film on a disk under nonuniform rotation
TL;DR: In this paper, it has been shown that faster thinning can be obtained if the spinner starts impulsively and then increases its spinning rate continuously, which is a physical explanation for the above observation.
Journal ArticleDOI
Effect of thermocapillarity and variable thermal conductivity on the heat transfer analysis of a non-Newtonian liquid thin film over a stretching surface in the presence of thermal radiation and heat source/sink
K. Sreelakshmi,G. Sarojamma +1 more
TL;DR: In this paper, an analysis of the flow of an Ostwald-de-Waele liquid film on an unsteady stretching sheet under the influence of thermocapillary force, magnetic field and viscous dissipation is carried out.