Experimental reconstruction of three-dimensional hydrodynamic loading in water entry problems through particle image velocimetry

Mohammad Jalalisendi, Adel Shams, Riccardo Panciroli, Maurizio Porfiri

Research output: Contribution to journalArticle

Abstract

Predicting the hydrodynamic loading during water impact is of fundamental importance for the design of offshore and aerospace structures. Here, we experimentally characterize the 3D hydrodynamic loading on a rigid wedge vertically impacting a quiescent water surface. Planar particle image velocimetry is used to measure the velocity field on several planes, along the width and the length of the impacting wedge. Such data are ultimately utilized to estimate the 3D velocity field in the whole fluid domain, where the pressure field is reconstructed from the solution of the incompressible Navier–Stokes equations. Experimental results confirm that the velocity field is nearly 2D at the mid-span of the wedge, while the axial velocity along the length of the wedge becomes significant in the proximity of the edges. The variation of the fluid flow along the length of the wedge regulates the hydrodynamic loading experienced during the impact. Specifically, the hydrodynamic loading is maximized at the mid-span of the wedge and considerably decreases toward the edges. The method proposed in this study can find application in several areas of experimental fluid mechanics, where the analysis of unsteady 3D fluid–structure interactions is of interest.

Original languageEnglish (US)
JournalExperiments in Fluids
Volume56
Issue number2
DOIs
StatePublished - 2015

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particle image velocimetry
entry
Velocity measurement
wedges
Hydrodynamics
hydrodynamics
Water
water
velocity distribution
Fluid mechanics
Flow of fluids
fluid mechanics
surface water
pressure distribution
fluid flow
Fluids
proximity
fluids
estimates
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes
  • Computational Mechanics
  • Mechanics of Materials

Cite this

Experimental reconstruction of three-dimensional hydrodynamic loading in water entry problems through particle image velocimetry. / Jalalisendi, Mohammad; Shams, Adel; Panciroli, Riccardo; Porfiri, Maurizio.

In: Experiments in Fluids, Vol. 56, No. 2, 2015.

Research output: Contribution to journalArticle

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