Upward Liquid Flow in a Small Tube into which Air Streams : 5th Report, Relaxation Oscillation Caused by the Discontinuity of Tube Friction

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概要

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• There is a very distinctly discontinuous region at the boundary between fish scale type slug flow and froth flow in a vertical small tube. This involves a possibility of leading to the relaxation oscillation of a stream, when the air line has an air chamber, and the inlet hole to the chamber has a fairly high degree of resistance. In the case of constant rate of liquid flow, the condition of generating the relaxation oscillation is as follows Cc^<1/q%gt;<Q_<gB>^<1/q>-Q_<gA>^<1/q>/P_<VA>-P_<VB> where Cc:Q_<g3>/(P_4-P_V)^q=constant q: constant P_V: pressure of air chamber Q_<g3 >: rate of air flow which streams into air chamber Q_<g2>: rate of air flow which streams into tube Subscripts A and B: Upper limit of fish scale type slug flow region and lower limit of froth flow in steady state

• 一般社団法人日本機械学会の論文

著者

• Oya Takio

  Faculty Of Engineering Meiji University

関連論文

• Upward Liquid Flow in a Small Tube into which Air Streams : 5th Report, Relaxation Oscillation Caused by the Discontinuity of Tube Friction
• Upward Liquid Flow in a Small Tube into which Air Streams : 4th Report, Pipe Friction II
• Upward Liquid Flow in a Small Tube into which Air Streams : 3rd Report, Pipe Friction I

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