The computation of wave force on a large circular cylinder structure using the direct method of boundary integral equation is presented based on the linear diffraction wave theory.

In this paper, the nonlinear diffraction problem is studied with potential flow theory in frequency domain for three-dimensional floating body sailing in waves on deep water.

The result shows that the penetration of diffraction wave rays through the low velocity zone in subsided column results in an obvious time delay, with the water filled subsided column being longer in delayed time than that of the non water filled subsided column.

The portable mine detector,which is used to make advance detection of the front small structure of the mining faces by utilizing the diffracted wave,has become an effective auxiliary tool for the forecasting in the tunnelling.

Two numerical examples illustrated the theoretical results, and the ellipse features of non-zero offset Fresnel zone expounded the distribution of the main energy of seismic diffracted waves quantitatively.

A numerical model of wave diffraction was established using infinite similar element method(ISEM),coupled with finite element method(Garlerkin),to obtain wave force on a vertical cylinder of arbitrary cross section.

An analytical method was developed to study the wave diffraction effects on V-type bottom-mounted breakwaters.

Based on the image theory, the wave diffraction from a cylinder in front of a vertical wall is transformed into the problem of diffraction of bidirectional incident waves from two cylinders.