Modeling and analysis of water-hammer in coaxial pipes

Pierluigi Cesana, Neal Bitter

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


The fluid-structure interaction is studied for a system composed of two coaxial pipes in an annular geometry, for both homogeneous isotropic metal pipes and fiber-reinforced (anisotropic) pipes. Multiple waves, traveling at different speeds and amplitudes, result when a projectile impacts on the water fillinhe annular space between the pipes. In the case of carbon fiber-reinforced plastic thin pipes we compute the wavespeeds, the fluid pressure and mechanical strains as functions of the fiber winding angle. This generalizes the single-pipe analysis of J. H. You, and K. Inaba, Fluid-structure interaction in water-filled pipes of anisotropic composite materials, J. Fl. Str. 36 (2013). Comparison with a set of experimental measurements seems to validate our models and predictions.

Original languageEnglish
Pages (from-to)225-239
Number of pages15
JournalJournal of Fluids and Structures
Publication statusPublished - Nov 1 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering


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