The simulation of the wave propagation caused by seismic stimulation allows us to study the behaviour of the environment and to evaluate the consequences. The model involves the wave equation which includes an hysteresis loop in the stress-strain relationship. This induces nonlinearities and, at the vertices of the loop, non-differentiable mathematic operators. We propose a numerical process wh...

Theory, numerical simulation, and experiment on the interaction of electromagnetic wave with suddenly created periodic plasma layers are presented. In the experiment, frequency-downshifted signals of considerably large spectral width and enhanced spectral intensity were detected. Numerical simulation of the experiment, that the plasma has a finite periodic structure and is created much faster t...

Simulation research on the launch process of a ship-borne multiple launch rocket system is studied in this paper. First, the power spectrum density of the ship’s motion is calculated based on ocean wave energy spectrum, and the movement spectrums of the ship’s random motion are calculated. Then, the model of shipborne rocket launcher system is built by virtual prototype technology. The launch p...

This paper deals with the design and simulation of all-optical 4×2 encoderusing the wave interference effect in photonic crystals. By producing 4 opticalwaveguides as input and two waveguides as output, the given structure was designed.The size of the designed structure is 133.9 μm2. The given all-optical encoder has acontrast ratio of 13.2 dB, the response time of 0.45 ...

A method of complex orthogonal decomposition is summarized for the time-domain, and then formulated and justified for application in the frequency-domain. The method is then applied to the extraction of modes from simulation data of sampled multi-modal traveling waves for estimating wave parameters in one-dimensional continua. The decomposition is first performed on a transient nondispersive pu...

KUMAR, B.P. and STONE G.W., 2007. Numerical simulation of typhoon wind forcing in the Korean seas using a spectral wave model. Journal of Coastal Research, 23(2), 362–373. West Palm Beach (Florida), ISSN 0749-0208. This study investigates the application of the wave model (WAM) to simulate the generation and propagation of typhoon waves in Korean seas. The model solves the energy balance equati...

In this study, simulation of Fitzhugh nagumo model in order to generation and propagation of the wave of action potential over the length the of the squid giant axon and survey the passage of time effect in wave propagation have been explored. Simulation has been performed by using the Comsol Multiphysics 3.5 a software. So that, in this simulation, squid giant axon is intended to form hollow c...

Surface acoustic wave (SAW) devices based on Rayleigh wave, shear wave, love wave, acoustic plate mode (APM) wave and flexural plate wave have been explored for sensors, actuators and telecommunication applications. An interdigital transducer (IDT) is a metallic comb-like structure fabricated over piezoelectric substrate. SAWs are generated over the substrate by applying electrical signal to th...

Alfvén wave propagation in an initial value magnetohydrodynamic (MHD) simulation is reported. The simulation result is compared with the theoretical shear Alfvén wave dispersion relation both in a cylindrical geometry and in a toroidal geometry. Generation of the toroidicity induced Alfvén eigenmode (TAE) frequency gap is observed in the presence of 1/R variation of the toroidal magnetic field....

COMSOL has been used to model the propagation of electromagnetic waves in fusion plasmas. For the first time, a finite element method has been used to solve the wave propagation for realistic fusion plasma parameters in the lower hybrid and ion cyclotron frequency ranges. Moreover, for lower hybrid waves, a new efficient iterative algorithm has been developed to take into account the dispersive...