The Radial Flow of a Thin Liquid Film : 4th Report, Stability of Liquid Film and Wall Pressure Fluctuation

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概要

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• The occurrence of the instability of a radial flow of thin liquid film is investigated. Two regions of flow field were considered. One is the region in which a boundary layer grows in a downstream direction, and the other is the region in which the whole flow is a boundary layer. For the former region, Orr-Sommerfeld equation was solved numerically by means of a modified Kaplan method, with the assumption of Blasius's and Watson's velocity profile. For the latter, O-S equation was replaced by a difference system, and solved taking account of the free surface condition for Blasius's and Watson's profile. In experiments, the wall pressure was measured, which was followed by spectral analysis. The pressure fluctuation frequency due to the disturbance wave was compared with the linear stability theory.

• 一般社団法人日本機械学会の論文

著者

• Azuma Tsuneo

  Faculty Of Engineering Osaka City University

• HOSHINO Tatsuroh

  Osaka City University

関連論文

• The Radial Flow of a Thin Liquid Film : 3rd Report, Velocity Profile
• The Radial Flow of a Thin Liquid Film : 2nd Report, Liquid Film Thickness
• The Radial Flow of a Thin Liquid Film : 1st Report, Laminar-Turbulent Transition
• The Radial Flow of a Thin Liquid Film : 4th Report, Stability of Liquid Film and Wall Pressure Fluctuation
• The Radial Flow of a Thin Liquid Film : 5th Report, Influence of Wall Roughness on Laminar-turbulent Transition

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