A5020714929- Electromagnetic Simulation and Numerical Methods
- Numerical methods in engineering
- Non-Destructive Testing Techniques
- Advanced Numerical Methods in Computational Mathematics
- Microwave Engineering and Waveguides
- Lightning and Electromagnetic Phenomena
- Differential Equations and Numerical Methods
- Microwave Imaging and Scattering Analysis
- Photonic and Optical Devices
- Magnetic Properties and Applications
- Aerosol Filtration and Electrostatic Precipitation
- Electromagnetic Scattering and Analysis
- Geophysical Methods and Applications
- Underwater Acoustics Research
- Electromagnetic wave absorption materials
- High voltage insulation and dielectric phenomena
Amasya Üniversitesi
2020-2025
Universidad de Granada
2023-2024
University of Manchester
2015-2016
This work aims to determine stability conditions on local regions for explicit time domain schemes that discretize Maxwell's curl equations, specifically focusing the finite-differences time-domain (FDTD) and discontinuous Galerkin (DGTD) methods. To achieve this, we explore use of linear invariant with multiple input output (LTI-MIMO) systems combined dissipative theory. One main results this approach shows method is valid FDTD DGTD-RK (DGTD Runge-Kutta integration) schemes.
A subcell modeling technique for frequency-dependent thin layers in finite-difference time-domain method is introduced. The proposed based on the application of integral form Maxwell-Ampere equation and solution a set auxiliary equations to advance field components. It has ability handle one or several embedded medium without solving high-order differential equations. To validate our method, we compare obtained results with analytical solutions numerical references both time domain frequency domain.
An impedance model, based on transmission line (TL) theory, is introduced for common mode ferrite chokes. The proposed model takes into account the geometrical properties of choke, distribution electromagnetic fields within core material and impact measurement setup. validity was tested through numerical simulations. As a practical application, applied to estimate complex permeability MnZn NiZn cores from measurements, resulting in range values compatible with those reported other works.
The Voxels-in-Cell (VIC) method was recently introduced for reducing the computational cost of finite-difference time-domain (FDTD) with objects composed dielectric voxels. It relies on using a FDTD cell larger than voxels, eight or more voxels in each VIC cell. With objective it bio-electromagnetics applications, this paper extends to filled Debye media. Beside theory and algorithm extended method, several numerical experiments are reported canonical object human body phantoms show that...
In this article, we show that the previously published finite-difference time-domain (FDTD) thin-layer technique in Debye media can also be used to account for FDTD cells filled with several media. This permits either accuracy improved or computational time reduced by increasing cell size. The numerical experiments were performed a 2-D slice of an anatomical model.
The computational cost is one of the major concerns standard finite-difference time-domain (FDTD) method based on a uniformly spaced orthogonal Cartesian lattice when it employed to solve large-scale electromagnetic problems. To ensure numerical accuracy, FDTD cell size has be determined smallest object within space. This spatial constraint causes very fine meshing entire space unnecessarily and also leads unreasonably small time step usage under CFL (Courant-Fiedrichs-Lewy) stability...
This article introduces a comprehensive methodology for analyzing common-mode (CM) ferrite chokes in time-domain (TD) methods, employing lumped dispersive loads, and validates it through typical test setup cable crosstalk assessment. The analysis begins with the experimental characterization of CM choke material properties using coaxial line fixture to obtain its constitutive parameters. Subsequently, simplified convolutional model is obtained, representing impedance when placed on location...