空気圧管内流れの過渡特性に関する研究

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タイトル別名
  • A Study on the Transient Characteristics of the Flow in Pneumatic Transmission Line
  • クウキアツカンナイ ナガレ ノ カト トクセイ ニカンスルケンキュウ

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The transient response of pneumatic transmission line, if the amplitude of it is greater than a certain value, is different from the one analyzed by the linear theory which is generally used. That shows the occurrence of nonlinear phenomenon. To investigate the nonlinear phenomenon of the transient response, firstly the boundary of an existence of it must be fixed, and so the precise analysis which include that of velocity fluctuation is needed, because of the transition to turbulence is considered to be the main factor of the nonlinear phenomenon.<br>In this study, high speed and accurate computing method for the transient response of very-small amplitude is developed, which is based on the linear thory and at the boundary condition of considering heat transfer through the line wall. Then the boundary of the validity of linear thoery is illustrated on basis of experimental and computed results. And it is concluded that the main factor of nonlinear phenomenon is the passing transition to turbulence of transient air flow in the line.

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