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Influences on water-hammer wave shape: an experimental study

Traudt, Tobias and Bombardieri, Cristiano and Manfletti, Chiara (2016) Influences on water-hammer wave shape: an experimental study. CEAS Space Journal, 8 (3), pp. 215-228. Springer. DOI: 10.1007/s12567-016-0115-7 ISSN 1868-2502

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Water-hammer phenomena are of strong interest in a number of different industrial fields, amongst which the space industry. Here the priming of feedlines during start-up of an engine as well as the rapid closing of valves upon shutdown may lead to pressure peaks symptomatic of a water-hammer wave. Test benches used to conduct tests on future as well as current engines are also sensitive to water-hammer waves traveling along their feedlines. To enhance the understanding of water-hammer, we investigated different configurations and their influence on the wave shape in the frequency domain. The configurations feature a coiled pipe setup with a Support structure and without a support structure. Two other phenomena will be presented. We found a beat phenomenon which is likely to be the so called Poisson-coupling beat. Finally we will show that the second water-hammer peak can reach pressures a lot higher than the first peak by additive interference of the primary and secondary water-hammer wave.

Item URL in elib:https://elib.dlr.de/107655/
Document Type:Article
Title:Influences on water-hammer wave shape: an experimental study
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Traudt, TobiasTobias.Traudt (at) dlr.deUNSPECIFIED
Bombardieri, CristianoCristiano.Bombardieri (at) dlr.deUNSPECIFIED
Manfletti, ChiaraDLR Lampoldshausen, Institut für RaumfahrtantriebeUNSPECIFIED
Date:September 2016
Journal or Publication Title:CEAS Space Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s12567-016-0115-7
Page Range:pp. 215-228
Keywords:water hammer, pressure hammer, cavitation, frequency Analysis, speed of sound, two phase flow
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Leitprojekt - Forschungsverbund Oberstufe
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Hanke, Michaela
Deposited On:11 Nov 2016 07:58
Last Modified:14 Dec 2019 04:27

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