Shielding effect of surface waves by trench

Ion plasma waves induced by frustrated Debye shielding

The oscillation of electrons, in a sufficiently intense pump wave, frustrates Debye shielding in the direction of the oscillation. One finds that such oscillating electrons cannot shield charge fluctuations over distances smaller than the distance they sample in a plasma period. One consequence is that the frequency of ion waves can be increased from the ion acoustic frequency to the ion plasma...

Propagation of obliquely incident water waves over a trench

The diffraction of obliquely incident surface waves by an asymmetric trench is investigated using linearized potential theory. A numerical solution is constructed by matching particular solutions for each subregion of constant depth along vertical boundaries ; the resulting matrix equation is solved numerically. Several cases where the trench-parallel wavenumber component in the incident-wave r...

Numerical Modeling of Nonlinear Surface Waves caused by Surface Effect Ships Dynamics and Kinematics

We model fully nonlinear free surface waves caused by a translating disturbance made of a pressure patch and/or a surface-piercing body (ship), within the framework of potential flow theory. The three-dimensional higher-order Boundary Element Model by Grilli et al. (2001) and Fochesato et al. (2004) is utilized with some recent extensions. In addition to the regular Eulerian-Lagrangian updating...

Subharmonic resonant excitation of edge waves by breaking surface waves

We have added a new Figure 3, where we show two frequency spectra. The first spectrum (Figure 3 a) is in absence of the breaking waves, where the first peak indicates the edge wave frequency and the second peak indicates the surface elevation frequency. The second frequency spectrum (Figure 3 b) is plotted in presence of breaking wave and indicates the suppression of the peak for the edge wave ...

Acoustic-Gravity Waves Interacting with a Rectangular Trench