Numerical analysis of transient flow through a pipe orifice (Time constant for settling flow)

Toshiyuki Hayase, Ping Cheng, Satoru Hayashi

研究成果: Article査読

4 被引用数 (Scopus)

抄録

As a fundamental consideration in hydraulic valve dynamics, transient flow through a pipe orifice has been studied via a numerical analysis. Steady axisymmetric viscous fluid flow was first investigated to confirm the present SIMPLER-based finite volume methodology. Time-dependent calculation for a suddenly imposed pressure gradient has shown two distinct characteristic time constants for the transient state. The first characteristic time is commonly considered to correspond to the flow rate change, while the second one concerning the variation of flow structure has not been treated in earlier studies. The final settling of flow is completed in the second characteristic time which is almost ten times larger than the first one under the present condition.

本文言語English
ページ(範囲)157-163
ページ数7
ジャーナルJSME International Journal, Series B: Fluids and Thermal Engineering
38
2
DOI
出版ステータスPublished - 1995

ASJC Scopus subject areas

  • 機械工学
  • 物理化学および理論化学
  • 流体および伝熱

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