Experimental and analytical study of the air-water Interface kinematics during filling and emptying of a horizontal pipeline

J. Laanearu, Q. Hou, A.S. Tijsseling

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)
3 Downloads (Pure)

Abstract

It is demonstrated that the air-water interface in a large-scale pipeline during Its filling and emptying reveals different kinematical conditions In addition to shear at the pipe wall, there is also shear produced by air Intrusion inside the water colunin The experimental findings of unidirectionally moving water fronts along the horizontal test section of a PVC pipeline with diameter-to-length ratIo 11100 are analysed A simple Control Volume model is used for modelling of the water-front splitting in the pipeline, where free-surface and mixed stratified flows are present. The Froude-number criterion is used to figure out the hydraulic regimes (sub- and supercritical) of the stratified flows in the pipeline The Zukoski dimensionless number, which characterizes the relative shortening of the water column due to air intrusion on top of the moving water column, is also estimated.

Original languageEnglish
Title of host publicationBHR Group - 12th International Conference on Pressure Surges, 18-20 November 2015, Dublin, Ireland
Place of Publications.l.
PublisherBHR Group Limited
Pages625-637
Number of pages13
ISBN (Electronic)9781510817180
Publication statusPublished - 2016
Event12th International Conference on Pressure Surges - Dublin, Ireland
Duration: 18 Nov 201520 Nov 2015

Conference

Conference12th International Conference on Pressure Surges
CountryIreland
CityDublin
Period18/11/1520/11/15

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