Dynamic Behavior of a Thin Liquid Surface by Repetitively Applied Stress (Numerical Analyses by the Long Wave Equation)

Shigehisa FUKUI; Kota HOZUMI; Hiroyuki ISHIBASHI; Hiroshige MATSUOKA

doi:10.1299/jamdsm.4.61

Head/Disk Interface and Tribology

Dynamic Behavior of a Thin Liquid Surface by Repetitively Applied Stress

(Numerical Analyses by the Long Wave Equation)

Shigehisa FUKUI, Kota HOZUMI, Hiroyuki ISHIBASHI, Hiroshige MATSUOKA

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Keywords: Ultra-thin Liquid Film, Long Wave Equation, Surface Tension, Disjoining Pressure, Dynamic Behavior, Hard Disk Drive, Head Disk Interface

JOURNAL FREE ACCESS

2010 Volume 4 Issue 1 Pages 61-69

DOI https://doi.org/10.1299/jamdsm.4.61

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Abstract

A numerical scheme by which to analyze the dynamic behavior of an ultra-thin liquid (lubricant) surface in the frequency domain resulting from repetitively applied pressure and shear stress was established. Numerical results for the dynamic behavior of an ultra-thin liquid (lubricant) surface produced by sinusoidally applied pressure and shear stress were obtained. The dependence of the liquid surface deformation on the frequency of the stresses and the disk speed were clarified.

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