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

Toshiyuki Hayase; Ping Cheng; Satoru Hayashi

doi:10.1299/kikaib.60.78

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 journal › Article › peer-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 language	English
Pages (from-to)	78-84
Number of pages	7
Journal	Transactions of the Japan Society of Mechanical Engineers Series B
Volume	60
Issue number	569
DOIs	https://doi.org/10.1299/kikaib.60.78
Publication status	Published - 1994
Externally published	Yes

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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10.1299/kikaib.60.78

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keywords = "Computational Fluid Dynamics, Fluid Power Systems, Fluid Transients, Pipe Orifice, Time Constant",

author = "Toshiyuki Hayase and Ping Cheng and Satoru Hayashi",

year = "1994",

doi = "10.1299/kikaib.60.78",

language = "English",

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pages = "78--84",

journal = "Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B",

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AU - Cheng, Ping

AU - Hayashi, Satoru

PY - 1994

Y1 - 1994

N2 - 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.

AB - 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.

KW - Computational Fluid Dynamics

KW - Fluid Power Systems

KW - Fluid Transients

KW - Pipe Orifice

KW - Time Constant

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ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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