Equivalent Celerity in Water Hammer for Serially Connected Pipelines

Agnieszka Malesińska , Mariusz Rogulski , Pierfabrizio Puntorieri , Giuseppe Barbaro , Beata Elżbieta Kowalska


This paper presents the results of studies of water hammer phenomena in a physical model in combinations of two and three pipelines connected in series. The combined pipelines were made of steel and polypropylene. Pipelines made of one material type were connected in series in different configurations of diameter ratios and lengths of connecting sections. The obtained results were used to verify the value of the equivalent celerity calculated from equations derived using linear analysis of natural vibrations of the system. For verification of the equations, an algorithm in MATLAB was developed that allows one to easily calculate the equivalent celerity, ce, for N pipelines connected in series with varying diameter, length, and material composition. The ability to easily determine the value of the equivalent celerity allows the calculation of the maximum increase of pressure for a given configuration of pipelines, for example, after pipeline modernization or during making decisions on the installation of often expensive equipment to counter the negative effects of water hammer.
Author Agnieszka Malesińska (FEE / DWSWT)
Agnieszka Malesińska,,
- Department of Water Supply and Wastewater Treatment
, Mariusz Rogulski (FEE / DISEQR)
Mariusz Rogulski,,
- Department of Informationa Science and Environment Quality Research
, Pierfabrizio Puntorieri - [Università degli Studi di Reggio Calabria]
Pierfabrizio Puntorieri,,
, Giuseppe Barbaro - [Università degli Studi di Reggio Calabria]
Giuseppe Barbaro,,
, Beata Elżbieta Kowalska
Beata Elżbieta Kowalska,,
Journal seriesJournal of Pipeline Systems Engineering and Practice, ISSN 1949-1190, e-ISSN 1949-1204
Issue year2020
Publication size in sheets0.5
Article number04019039
Keywords in EnglishWater hammer; Equivalent celerity; Linear analysis of natural vibrations; Leak
Keywords in original languageWater hammer; Equivalent celerity; Linear analysis of natural vibrations; Leak
ASJC Classification2205 Civil and Structural Engineering; 2210 Mechanical Engineering
Languageen angielski
Score (nominal)70
Score sourcejournalList
ScoreMinisterial score = 70.0, 23-03-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.517; WoS Impact Factor: 2018 = 1.181 (2) - 2018=1.456 (5)
Citation count*1 (2020-12-23)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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