CFD investigations of wave interaction with a pair of large tandem cylinders

CFD investigations of wave interaction with a pair of large tandem cylinders Wave forces and the flow field around cylinders placed in a periodic wave field are investigated with a numerical model using the Reynolds-averaged Navier–Stokes equations. The numerical model is validated by simulating the wave interaction with a single cylinder and comparing the numerical results with experimental data from a large scale experiment. Then, the wave interaction with a single large cylinder and a pair of large cylinders placed in tandem for different incident wave steepnesses is studied. The numerically calculated forces are compared with predictions from potential theory. The numerical results are seen to match the predictions at low incident wave steepness but differ at higher incident wave steepnesses. The wave diffraction pattern around the tandem cylinders for waves of low and high steepness is investigated and the evolution of a strong diffraction pattern is seen in the case of high steepness waves, which results in the difference between the wave forces predicted by potential theory and the numerical model at higher steepnesses. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ocean Engineering Elsevier

CFD investigations of wave interaction with a pair of large tandem cylinders

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Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier Ltd
ISSN
0029-8018
eISSN
1873-5258
D.O.I.
10.1016/j.oceaneng.2015.08.049
Publisher site
See Article on Publisher Site

Abstract

Wave forces and the flow field around cylinders placed in a periodic wave field are investigated with a numerical model using the Reynolds-averaged Navier–Stokes equations. The numerical model is validated by simulating the wave interaction with a single cylinder and comparing the numerical results with experimental data from a large scale experiment. Then, the wave interaction with a single large cylinder and a pair of large cylinders placed in tandem for different incident wave steepnesses is studied. The numerically calculated forces are compared with predictions from potential theory. The numerical results are seen to match the predictions at low incident wave steepness but differ at higher incident wave steepnesses. The wave diffraction pattern around the tandem cylinders for waves of low and high steepness is investigated and the evolution of a strong diffraction pattern is seen in the case of high steepness waves, which results in the difference between the wave forces predicted by potential theory and the numerical model at higher steepnesses.

Journal

Ocean EngineeringElsevier

Published: Nov 1, 2015

References

  • Breaking characteristics and geometric properties of spilling breakers over slopes
    Alagan Chella, M.; Bihs, H.; Myrhaug, D.; Muskulus, M.
  • Linear and nonlinear irregular waves and forces in a numerical wave tank
    Boo, S.Y.
  • A 3D numerical model for computing non-breaking wave forces on slender piles
    Mo, W.; Irschik, K.; Oumeraci, H.; Liu, P.
  • Multiple scattering of radiation by an arbitrary configuration of parallel cylinders
    Twersky, V.

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