Results 21 to 30 of about 9,764 (300)

Implementation of a GPU-Oriented Absorbing Boundary Condition for 3D-FDTD Electromagnetic Simulation [PDF]

open access: yes, 2012
In this paper, we propose and discuss efficient GPU implementation techniques of absorbing boundary conditions (ABCs) for a 3D finite-difference time-domain (FDTD) electromagnetic field simulation for antenna design.
Dohi, Keisuke   +3 more
core   +1 more source

Vector fitting realisation of exact time domain modal nonreflecting boundary condition [PDF]

open access: yes, 2010
To employ the modal nonreflecting boundary condition (MNRBC) in cylindrical coordinates in the finite element time domain (FETD) method, a time domain kernel expression must be found that it is the inverse Laplace transform (ILT) of a known frequency ...
Bavelis, Konstantinos, Mias, Christos
core   +1 more source

Comparison of outflow boundary conditions for subsonic aeroacoustic simulations [PDF]

open access: yes, 2011
Aeroacoustics simulations require much more precise boundary conditions than classical aerodynamics. Two classes of non-reflecting boundary conditions for aeroacoustics are compared in the present work: characteristic analysis based methods and Tam and ...
H. Deniau   +8 more
core   +1 more source

Application of multisection recursive convolution in 3D FETD-FABC simulations [PDF]

open access: yes, 2008
The multisection recursive convolution (MS-RC) methodology is successfully applied to the finite element time domain floquet absorbing boundary condition modeling of doubly periodic structures.
Cai, Yong   +3 more
core   +1 more source

Dust impacts on radiative effects of black carbon aerosol in Central Asia [PDF]

open access: yesE3S Web of Conferences, 2019
The radiative effect of mineral dust and black carbon aerosol are investigated with aerosolclimate model simulations with fixed sea surface temperatures as boundary condition.
Tegen Ina, Heinold Bernd
doaj   +1 more source

Assessment of a PML Boundary Condition for Simulating an MRI Radio Frequency Coil

open access: yesInternational Journal of Antennas and Propagation, 2008
Computational methods such as the finite difference time domain (FDTD) play an important role in simulating radiofrequency (RF) coils used in magnetic resonance imaging (MRI). The choice of absorbing boundary conditions affects the final outcome of such
Yunsuo Duan   +4 more
doaj   +1 more source

Numerical Investigations of Ultrasonic Reverse Time Migration for Complex Cracks Near the Surface

open access: yesIEEE Access, 2022
Metal materials will produce fatigue cracks under long-term cyclic loading. It is difficult to fully image the topography of defects with the current mainstream ultrasound imaging technology.
Junjie Chang   +3 more
doaj   +1 more source

Closed-Form Expressions for Local Absorbing Boundary Conditions in Electromagnetic Scattering Problems and Their Implementation into Commercial FEM Software

open access: yesEnergies, 2023
When solving open-region electromagnetic scattering problems using the standard finite element method, the infinite region exterior to the scatterer must be truncated with an artificial outer boundary. In the interior or finite part of the domain, finite
Marcin Ziolkowski, Stanislaw Gratkowski
doaj   +1 more source

Absorbing boundary conditions for numerical simulation of waves [PDF]

open access: yesProceedings of the National Academy of Sciences, 1977
In practical calculations, it is often essential to introduce artificial boundaries to limit the area of computation. Here we develop a systematic method for obtaining a hierarchy of local boundary conditions at these artifical boundaries. These boundary conditions not only guarantee stable difference approximations, but also minimize the (unphysical ...
Engquist, Björn, Majda, Andrew
openaire   +3 more sources

Absorbing Boundary Conditions for Domain Decomposition

open access: yesApplied Numerical Mathematics, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Engquist, Bjorn, Zhao, Hong-Kai
openaire   +2 more sources

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