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Weakly Nonlinear Stability Analysis of a Thin Magnetic Fluid during Spin Coating
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-07-13
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
This paper investigates the stability of a thin electrically conductive fluid under an applied uniform magnetic filed during spin coating.
A generalized nonlinear kinematic model is derived by the long-wave perturbation method to represent the physical system.
After linearizing the nonlinear evolution equation, the method of normal mode is applied to study the linear stability.
Weakly nonlinear dynamics of film flow is studied by the multiple scales method.
The Ginzburg-Landau equation is determined to discuss the necessary conditions of the various critical flow states, namely, subcritical stability, subcritical instability, supercritical stability, and supercritical explosion.
The study reveals that the rotation number and the radius of the rotating circular disk generate similar destabilizing effects but the Hartmann number gives a stabilizing effect.
Moreover, the optimum conditions can be found to alter stability of the film flow by controlling the applied magnetic field.
American Psychological Association (APA)
Chen, Cha'o-Kuang& Lai, Hsin-Yi. 2010. Weakly Nonlinear Stability Analysis of a Thin Magnetic Fluid during Spin Coating. Mathematical Problems in Engineering،Vol. 2010, no. 2010, pp.1-17.
https://search.emarefa.net/detail/BIM-513945
Modern Language Association (MLA)
Chen, Cha'o-Kuang& Lai, Hsin-Yi. Weakly Nonlinear Stability Analysis of a Thin Magnetic Fluid during Spin Coating. Mathematical Problems in Engineering No. 2010 (2010), pp.1-17.
https://search.emarefa.net/detail/BIM-513945
American Medical Association (AMA)
Chen, Cha'o-Kuang& Lai, Hsin-Yi. Weakly Nonlinear Stability Analysis of a Thin Magnetic Fluid during Spin Coating. Mathematical Problems in Engineering. 2010. Vol. 2010, no. 2010, pp.1-17.
https://search.emarefa.net/detail/BIM-513945
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-513945