Numerical Analysis of the Three-Dimensional Nonlinear Waves Caused by Breaking Waves around a Floating Offshore Structure

부유식 해양구조물 주위의 쇄파현상을 동반한 3차원 비선형성 파의 수치해석

  • Published : 1996.08.01

Abstract

Numerical simulation is made of the three-dimensional wave breaking motion about a part of a floating offshore structure containing a circular cylinder mounted vertically onto a lower hull in regular periodic gravity wave generated by a numerical wave maker. TUMMAC-VIII finite-difference method is newly developed for such a problem. By use of density-function technique the three-dimensional wave breaking motion is approximately implenented in the framework of rectangular grid system. A porosity technique is devised for the implementation of the no-slip bydy boundary conditions. The generation of breaking waves by the interaction of incident waves with the structure is well simulated and interesting features of breaking waves are revealed with containing degree of quantitative and qualitative accuracy.

Keywords

References

  1. SNAME v.79 Mathematical Method of Determining Hydrodynamincally Induced Forces on a Semisubmergible Hooft,J.P.
  2. J. Soc. Naval Arch. Japan v.173 On the Accuracy of Numerical Wave Making Techniques Park,J.C.(et al.)
  3. ASME FED Free-Surface Turbulence v.181 Numerical Simulation of the Nonlinear Free-Surface Flow Caused by Breaking Waves Park,J.C.;Miyata,H.
  4. Advances in Fluid Mechanics Potential Flow of Fluids Wave Breaking Simulation Miyata,H.;Park,J.C.
  5. J. Kansai Soc. Naval Archit Japan v.207 Numerical Study of Some Wave-Breaking Problems by a Finite Difference Method Miyata,H.(et al.)
  6. J. Comput. Phys. v.8 Improved Free Surface Boundary Conditions for Numerical Incompressible Flow Calculations Nichols,B.D.;Hirt,C.W.
  7. Proc. 19th Symp. Naval Hydrodynamics v.XII Wave-Wake Interactions About a Body of Revolution Advancing Beneath the Free-Surface Park,J.C.(et al.)
  8. Int. J. Numerical Methods in Fluids v.14 A Finite Difference Method for 3D Flows About Bodies of Complex Geometry in Rectangular Co-ordinate Systems Miyata,H.;Yamada,Y.
  9. Annual Review of Fluid Mechanics Breaking Waves on Beaches Peregrin,D.H.
  10. Recent Advances in Engineering Mechanics and their Impact on Civil Engineering Practice Velocity Measurement at a Breaking Air- Water Interface Melvillie,W.K.;Rapp,R.J.