Title

Measurements of Mixed Transient Flows

Document Type

Article

Publication Date

2-1-1989

Publication Title

Journal of Hydraulic Engineering

Volume

115

Issue

2

First page number:

169

Last page number:

182

Abstract

Laboratory experiments were carried out to observe the mechanism of transition between free‐surface flow and pressurized flow conditions in a circular pipe. Filling or pressurization of a pipe is typically accomplished by a positive surge moving toward the free‐surface flow region. Under certain conditions air-water interaction during pressurization can produce water hammer pressures. Draining or depressurization also produces a shock surface, i.e. a negative surge, that moves toward the pressurized zone. Unlike the positive surge, the negative surge produces negative pressure in the pressurized zone. Some aspects of the transition between positive and negative surges were also studied.

Keywords

Free flow; Pipes; Pressurized flow; Surge; Water hammer; Water-pipes

Disciplines

Civil and Environmental Engineering | Construction Engineering and Management | Hydraulic Engineering | Structural Engineering

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Identifier

DOI: http://dx.doi.org/10.1061/(ASCE)0733-9429(1989)115:2(169)

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