Journal ArticleDOI
The Role of Induced Air Shear on the Development of a Conducting Fluid Film over a Rough Spinning Disk in the Presence of a Transverse Magnetic Field
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The effect of air shear on the development of a thin conducting fluid film on a rough rotating disk has been analyzed in this paper, and the numerical solution of the governing equations of motion using the initial and boundary conditions has been obtained by a finite difference method.Abstract:
The effect of air shear on the development of a thin conducting fluid film on a rough rotating disk has been analysed A uniform magnetic field acts parallel to the axis of the rough rotating disk The numerical solution of the governing equations of motion using the initial and boundary conditions have been obtained by a finite difference method The effect of air shear on the temporal evolution of the free surface of the fluid and on the retention of the liquid lubricant has been analysedread more
Citations
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Journal ArticleDOI
A Thin Conducting Liquid Film on a Spinning Disk in the Presence of a Magnetic Field: Dynamics and Stability
TL;DR: In this paper, the effects of a magnetic field on the dynamics of a thin nonuniform conducting film of an incompressible viscous fluid on a rotating disk has been considered, and a nonlinear evolution equation describing the shape of the film interface has been derived as a function of space and time and solved numerically.
Dissertation
Effect of External Fields on the Dynamics of Colloidal Phase Transitions
TL;DR: In this paper, the effects of external magnetic fields on the phase transition from liquid phase to solid deposits (evaporative colloidal phase transition) have been investigated with two different transition duration: (a) in the experiments of long duration, the fluid is allowed to evaporate by exposing the colloidal dispersion (negatively charged polystyrene particles of diameter 1.3?m dispersed in ultra pure water) to an environment at high temperature and low humidity (below 2% RH).
References
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Journal ArticleDOI
The flow due to a rotating disc
TL;DR: In this paper, the steady motion of an incompressible viscous fluid due to an infinite rotating plane lamina was considered, and it was shown that the equations of motion and continuity are satisfied by taking
Journal ArticleDOI
Flow of a Viscous Liquid on a Rotating Disk
TL;DR: In this paper, it was shown that initially irregular fluid distributions tend toward uniformity under centrifugation, and means of computing times required to produce uniform layers of given thickness at given angular velocity and fluid viscosity are demonstrated.
Journal ArticleDOI
Film flow on a rotating disk
TL;DR: In this article, the authors analyzed how a film of uniform thickness thins when the disk is set in steady rotation and showed that the leading order term in the long-time-scale solution for the transient film thickness is a lower bound for film thickness for all time.
Journal ArticleDOI
The effect of induced air‐flow on the spin coating of viscous liquids
TL;DR: In this paper, an approximate analysis using Cochran's classical solution for the induced air flow is presented, and regions where air flow significantly enhances thinning are delineated. But, as film thickness becomes very small, the external air flow dominates the centrifugal effect and controls the final rate of thinning, but not to the degree predicted.
Journal ArticleDOI
Investigation of the solvent‐evaporation effect on spin coating of thin films
TL;DR: A simple empirical relationship exists between the thickness and the solvent-evaporation rate of spin-coated thin films as discussed by the authors, where the thickness of a film formed from an organic solvent solution can be approximated by the relationship, where μ is the viscosity of the coating solution, ω is the rotation speed, E is the solvent extraction rate, λ is the latent heat of evaporation, Cp is the heat capacity of the solvent, and K 0 is a constant for volatile organic solvents.
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