Theoretical Analysis of the Reduction of Pressure Wave Velocity by Internal Circular Tubes

Michał Kubrak , Apoloniusz Kodura


This study presents a theoretical analysis of the influence of the insertion of circular tubes into a pipeline on the rapid water hammer phenomenon. Three types of circular tubes are distinguished: a thin-walled tube, a thick-walled tube and a solid cylindrical tube. For each case, by applying the work-energy principle, a formula for the pressure wave velocity is derived. The differences between the derived formulas are analyzed. It is shown that the insertion of a tube with a low bulk elastic modulus may have a damping effect on the water hammer phenomenon, i.e., it reduces the pressure wave velocity and maximum pressure increase.
Author Michał Kubrak (FEE / DHEH)
Michał Kubrak,,
- Department of Hydraulic Engineering and Hydraulics
, Apoloniusz Kodura (FEE / DHEH)
Apoloniusz Kodura,,
- Department of Hydraulic Engineering and Hydraulics
Publication size in sheets0.5
Book Kalinowska Monika B., Mrokowska Magdalena, Rowiński Paweł M. (eds.): Recent Trends in Environmental Hydraulics, GeoPlanet: Earth and Planetary Sciences, 2020, Springer, ISBN 978-3-030-37104-3, [978-3-030-37105-0], 318 p., DOI:10.1007/978-3-030-37105-0
Keywords in EnglishWater hammer, Pressure wave velocity, Pressure increase, Elastic tube
ASJC Classification1900 General Earth and Planetary Sciences
Languageen angielski
Score (nominal)20
Score sourcepublisherList
ScoreMinisterial score = 20.0, 14-09-2020, ChapterFromConference
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.258
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