ManageChatDiscover
141179

Experimental and Computational Investigations of the Effects of Free Valve Motion on Pressure Transient and Ram Pump Performance.

Article

Last updated: 04 Jan 2025

OverviewSimilar Items

Subjects

-

Tags

Mechanical Power Engineering

Abstract

An experimental investigation has been conducted to study the effect of free valve motion on the pressure transient and rain pump performance. In this study, the valve stem is attached to a leaf spring, which has a variable effective operating stiffness. The runs have been carried out at different initial valve openings for different spring stiffness. Fixed values have been used for the falling head of 2.5 m, and lifting head of 1.36 m. A computational model based on water hammer wave travel equations is used to verify the pressure transient due to valve self oscillatory motion. The governing equations are solved by the method of characteristics along the drive pipe with the appropriate boundary conditions at both ends of The pipe. The results reveal than the effective spring stiffness and initial valve opening have major effects on the ram pump performance. The stiffer spring, the maximum is the efficiency. Also the elastic spring, the maximum is the ram slow rate. Regardless of the spring stiffness. increasing the valve opening increases the ram flow rate. The design margins have been deduced defining the operational valve instability and/or ram pump performance. 

DOI

10.21608/bfemu.2021.141179

Authors

First Name

Abdel-Rahim

Last Name

Abdel-Rahim

MiddleName

Abdel-Baqi

Affiliation

Department of Mechanical Power Engineering.,El- Mansoura University Mansoura., 35516 EGYPT.

Email

-

City

Mansoura

Orcid

-

Volume

28

Article Issue

2

Related Issue

20836

Issue Date

2003-06-01

Receive Date

2003-04-19

Publish Date

2021-01-19

Page Start

71

Page End

80

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 28_Issue 2_Pages 71-80.pdf

PDF . 208.5kB

Link

https://bfemu.journals.ekb.eg/article_141179.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=141179

Order

11

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

Experimental and Computational Investigations of the Effects of Free Valve Motion on Pressure Transient and Ram Pump Performance.

Details

Type

Article

Created At

22 Jan 2023