Weakly Nonlinear Stability Analysis of a Thin Power-Law Fluid during Spin Coating

Abstract:

The weakly nonlinear stability of a thin Ostwald de-Waele power-law fluid during spin coating is investigated. Long-wave perturbation analysis is proposed to derive a generalized kinematic model of the physical system with a small Reynolds number. The study reveals that the rotation number generates a destabilizing effect either in pseudoplastic fluid or in dilatant fluid. Further, it is shown that the degree of power-law index n plays a vital role in stabilizing the film flow.

• Periodical: Applied Mechanics and Materials (Volume 319)
• Pages: 90-95
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.319.90
• Online since: May 2013
• Authors: Ming Che Lin, Chun I Chen, Shou Jen Huang
• Keywords: Nonlinear Stability, Power-Law Fluid, Spin Coating

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