An automated circuit-modeling tool is developed for arbitrary passive components. The tool builds compact, parameterized, analytical models based on full-wave EM simulations. The scattering parameters (or the transmission line parameters) of the components are stored as a multidimensional function of frequency and geometrical parameters. The modeling algorithm combines adaptive data selecting a...

Broadband electromagnetic transparency phenomenon is realized with a well-designed gradedpermittivity sphere, which has an extremely low scattering cross section over a wide frequency range, based on the generalized Mie scattering theory and numerical simulation in full-wave condition. The dynamic polarization cancellation is revealed by studying the variation of the polarization with respect t...

Raytracing/Fokker–Planck (FP) simulations used to model lower-hybrid current drive (LHCD) often fail reproduce experimental results, particularly when LHCD is weakly damped. A proposed reason for this discrepancy the lack of ‘full-wave’ effects, such as diffraction and interference, in raytracing breakdown approximation. Previous studies using non-Maxwellian full-wave/FP have been performed, bu...

In this paper a space-averaged Navier–Stokes approach was deployed to simulate the wave propagation over coastal structures. The developed model is based on the smoothed particle hydrodynamic (SPH) method which is a pure Lagrangian approach and can handle large deformations of the free surface with high accuracy. In this study, the large eddy simulation (LES) turbulent model was coupled with th...

Wave overtopping at breakwaters is one of their essential hydraulic characteristics when determining the design crest level. This study concentrates on developing a new practical formula on predicting wave overtopping, by implementing two different statistical models, Multiple Linear Regression model (MLR) and Generalized Linear Regression model (GLM). The models consider dependency of overtopp...

In the present paper, discrete element method (DEM) is used to study wave propagation phenomenon in granular soils. The effect of factors such as coefficient of friction, frequency, normal stiffness and soil gradation on the wave velocity is studied. Using the wall motion based on the sinusoidal function is the method of loading used in this simulation, through which the pressure wave is transf...

Wave diffraction is a very important phenomenon in marine engineering and several models have been developed for its simulation. The new version of SWAN, a third generation spectral model, includes an approximation to wave diffraction. The approximation is based on the mild-slope equation for refraction and diffraction, omitting phase information. The objective this paper is to evaluate the per...