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Multiphase Science and Technology
SJR: 0.183 SNIP: 0.483 CiteScore™: 0.5

ISSN Imprimer: 0276-1459
ISSN En ligne: 1943-6181

Multiphase Science and Technology

DOI: 10.1615/MultScienTechn.v20.i3-4.10
pages 213-238

FLUID-STRUCTURE INTERACTION DURING ARTIFICIALLY INDUCED WATER HAMMERS IN A TUBE WITH A BEND—EXPERIMENTS AND ANALYSES

E. Altstadt
Forschungszentrum Dresden-Rossendorf e.V., P.O.B. 510119, 01314 Dresden, Germany
H. Carl
Forschungszentrum Dresden-Rossendorf e.V., P.O.B. 510119, 01314 Dresden, Germany
H.-M. Prasser
Department of Mechanical and Process Engineering (MAVT), Swiss Federal Institute of Technology (ETHZ), ML K 13, Sonneggstrasse 3, 8092 Zürich, Switzerland
R. Weis
Forschungszentrum Dresden-Rossendorf e.V., P.O.B. 510119, 01314 Dresden, Germany

RÉSUMÉ

Experimental and numerical investigations of artificial water hammers in a pipe with a bend are presented. At FZR, a cold water hammer test facility was used to measure the fluid pressures and the pipe wall stresses occurring during water hammers. The finite element code ANSYS was used for the numerical analysis of the experiments. The focus was put on the local distributions of pressure and stress. It could be shown that the fluid pressure and pipe wall stress exhibit complex three-dimensional structures, which is a consequence of the fluid-structure interaction. The highest stresses occur in the pipe bend. The pressure peak is lower than predicted by the Joukowsky formula.


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