3. Non-Linear Hydrodynamic Forces Acting on Two-Dimensional Bodies

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概要

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• The second-order forces acting on a cylindrical body which oscillates with an arbitrary frequency at a free surface of infinitely deep water are calculated on the basis of the perturbation theory. The first and second-order boundary value problems are solved by the Boundary Element Method (BEM) which includes both boundaries of the body and the free surfaces. The pressure distribution including the quadratic terms of the Bernoulli equation is evaluated from the solution. The hydrodynamic forces acting on the body are obtained by the integration along the instantaneous wetted contour of the body. Finally, motions of the body in waves are determined by the solution of the equation of the motion up to the second order. Experiments are carried out for the radiation problems of the heaving and swaying oscillations, and the diffraction problems for a fixed body and a free floating body in steep regular waves. Those results are discussed in comparison with the numerical calculations.

• 社団法人日本船舶海洋工学会の論文

著者

• Kyozuka Yusaku

  National Defense Academy

関連論文

• 4. On the Unstable Swaying Motions of a Moored Cylinder in Regular Waves
• 7. On the Complete Reflection of Water Waves
• 3. Non-Linear Hydrodynamic Forces Acting on Two-Dimensional Bodies

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