Forces due to Nonlinear Waves on Vertical Cylinders

by Harihara Raman, Asst. Prof.; Dept. of Civ. Engrg., Indian Inst. of Tech., Madras, India,
Paruchuri Venkatanarasaiah, Research Scholar; Dept. of Civ. Engrg., Indian Inst. of Tech., Madras, India,

Serial Information: Journal of the Waterways, Harbors and Coastal Engineering Division, 1976, Vol. 102, Issue 3, Pg. 301-316

Document Type: Journal Paper

Discussion: Isaacson Michael de St. Q. (See full record)
Discussion: Chakrabarti Subrata K. (See full record)
Discussion: Shen Hung Tao (See full record)
Closure: (See full record)


Expressions are derived for the pressures and forces on a large vertical cylinder due to diffraction of Stokes' second-order wave. The flow is taken to be irrotational and the cylinder assumed to be rigidly fixed to the bottom with its top above the free surface. With a perturbation method, the nonlinear terms in the free surface boundary conditions are taken into account in obtaining the scattered potential. The results of the nonlinear theory were found to show a better agreement with experimental results than that of the linear diffraction theory.

Subject Headings: Nonlinear waves | Cylinders | Vertical loads | Free surfaces | Nonlinear analysis | Surface waves | Free flow | Overland flow | Boundary conditions | Wave diffraction

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