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A nonperturbative and universal FDTD model is proposed to investigate the nonlinear responses from metallic metamaterials. By coupling the hydrodynamic equation to the Maxwell equation, the multiphysics model enables to investigate both linear and nonlinear dynamics of free electron gas within the metallic metamaterials without any approximations and prior assumptions. Moreover, the proposed FDFD...
To study the transverse flow pressure and flow pressure torque generated by non-uniform flow that the ship encounters when it passes the entrance of breakwater in the process of driving away from the port, a ship model sailing at the end of breakwater and a digital basin were established by utilizing computational fluid dynamics. In this way, numerical calculation was conducted for the tide field...
Metamaterials have attracted much attention in recent years because of their electromagnetic exquisite proprieties. For this we will introduce in this paper the modeling of a whole structure in metamaterials by equivalent circuit model. We begin by modeling the SRR (Split Ring Resonator), then we model the HIS (High Impedance Surfaces). In order to validate models, we compare the results obtained...
An unconditionally-stable four-stages split-step convolutional perfectly matched layer (PML) algorithm is presented for modeling open region finite-difference time-domain (FDTD) applications. In the proposed method, the Maxwell's matrix is separated into four sub-matrices. Accordingly, the time step is divided into four sub-steps. Then, the formulation of the proposed method is derived. Furthermore,...
In order to study the ship navigation deflection, the motion model of the ship is established on the basis of CFD (computational fluid dynamics), for the numerical calculation and simulation of the motion state of S60 ship model in different water depths. Meanwhile, the calculation result is compared with the experimental data for verification, and it turns out that the two matches well. Afterwards,...
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