Liquid film formation on a rotating disk (1st report, numerical analysis at the initial stage)

Yoichiro Matsumoto, Taku Ohara, Isao Teruya, Hideo Ohashi

Research output: Contribution to journalArticlepeer-review

Abstract

Unsteady liquid film flow on a rotating disk, which is related to a spin coating technique to form a thin uniform film on a plate, is calculated numerically. Vewly developed calculation method, where the surface tension on the liquid surface can be taken into account, is applied. The numerical results reveal the followings : The hemi-spherical liquid on the disk, which starts to rotate impulsively from rest, spreads by a gravitational force at the first stage. The development of the distribution of radial and azimuthal velocities is affected complicatedly by the Coriolis force, viscous force and centrifugal force. The liquid spreads mainly by centrifugal force and forms a uniforml thin film on the disk at the last stage. The surface tension has a little influence on the spreading process only at the first stage.

Original languageEnglish
Pages (from-to)569-574
Number of pages6
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume54
Issue number499
DOIs
Publication statusPublished - 1988 Jan 1
Externally publishedYes

Keywords

  • Film Flow
  • Numerical Analysis
  • Rotating Disk
  • Spin Coating
  • Surface Tension
  • Transient Flow

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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