Numerical Analysis of Transient Flow through a Pipe Orifice: (2nd Report, Step Response from Initinal Steady Flow)

Toshiyuki Hayase, Ping Cheng, Satoru Hayashi

Research output: Contribution to journalArticlepeer-review

Abstract

As a fundamental consideration in hydraulic valve dynamics, transient laminar flow through a pipe orifice has been studied via numerical analysis. In the previous report the authors performed time-dependent calculation from the initial stationary state under a suddenly imposed pressure gradient, and pointed out that the dynamic behavior is characterized by two time constants. The present report treats the transient flow starting from an initial steady flow. Effects of the recirculating flow and the stretched contraction flow region are investigated in comparison with the previous result.

Original languageEnglish
Pages (from-to)78-84
Number of pages7
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume60
Issue number569
DOIs
Publication statusPublished - 1994

Keywords

  • Computational Fluid Dynamics
  • Fluid Power Systems
  • Fluid Transients
  • Pipe Orifice
  • Time Constant

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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