Fluid-structure interaction with viscoelastic supports during waterhammer in a pipeline

Roohollah Zanganeh, Ahmad Ahmadi, Alireza Keramat

Research output: Journal article publicationJournal articleAcademic researchpeer-review

39 Citations (Scopus)

Abstract

Waterhammer modeling with fluid-structure interaction (FSI) in a pipeline with axial viscoelastic supports is the aim of this research. The viscoelastic materials of supports (or the pipe wall) were described using the generalized Kelvin-Voigt model. Hydraulic governing equations were solved by the method of characteristic (MOC) and axial vibration equation of the pipe wall was solved using the finite element method (FEM) in the time domain. For a typical case study, four different types for supporting the pipeline in the axial direction: fully free to move; fixed (rigid support); elastic and viscoelastic supports, subject to a waterhammer are analyzed and the results are scrutinized. The results quantitatively confirm that the use of supports with viscoelastic behavior in the axial direction of the pipeline can significantly reduce axial-pipe vibrations (displacements and stresses). The consequences of this structural damping on the attenuation of the internal fluid pressure are further demonstrated.

Original languageEnglish
Pages (from-to)215-234
Number of pages20
JournalJournal of Fluids and Structures
Volume54
DOIs
Publication statusPublished - 1 Apr 2015
Externally publishedYes

Keywords

  • Fluid-structures interaction
  • Viscoelastic pipe
  • Viscoelastic supports
  • Water hammer

ASJC Scopus subject areas

  • Mechanical Engineering

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