scholarly journals Absorbing boundary conditions in the frequency-domain TLM method and their application to planar circuits

2001 ◽  
Vol 49 (8) ◽  
pp. 1469-1476 ◽  
Author(s):  
D. Pasalic ◽  
J. Bornemann ◽  
R. Vahldieck
Keyword(s):  
Boundary Conditions ◽  
Frequency Domain ◽  
Absorbing Boundary Conditions ◽  
Absorbing Boundary ◽  
Planar Circuits ◽  
Tlm Method

Absorbing boundary conditions for the TLM method

1992 ◽  
Vol 40 (11) ◽  
pp. 2095-2099 ◽  
Author(s):  
J.A. Morente ◽  
J.A. Porti ◽  
M. Khalladi
Keyword(s):  
Boundary Conditions ◽  
Absorbing Boundary Conditions ◽  
Absorbing Boundary ◽  
Tlm Method

scholarly journals Frequency-domain elastic wavefield simulation with hybrid absorbing boundary conditions

2019 ◽  
Vol 16 (4) ◽  
pp. 690-706
Author(s):  
Zhencong Zhao ◽  
Jingyi Chen ◽  
Xiaobo Liu ◽  
Baorui Chen
Keyword(s):  
Boundary Condition ◽  
Free Surface ◽  
Boundary Conditions ◽  
Frequency Domain ◽  
Time Domain ◽  
Absorbing Boundary Conditions ◽  
Elastic Media ◽  
Absorbing Boundary ◽  
Wavefield Simulation ◽  
The Time Domain

Abstract The frequency-domain seismic modeling has advantages over the time-domain modeling, including the efficient implementation of multiple sources and straightforward extension for adding attenuation factors. One of the most persistent challenges in the frequency domain as well as in the time domain is how to effectively suppress the unwanted seismic reflections from the truncated boundaries of the model. Here, we propose a 2D frequency-domain finite-difference wavefield simulation in elastic media with hybrid absorbing boundary conditions, which combine the perfectly matched layer (PML) boundary condition with the Clayton absorbing boundary conditions (first and second orders). The PML boundary condition is implemented in the damping zones of the model, while the Clayton absorbing boundary conditions are applied to the outer boundaries of the damping zones. To improve the absorbing performance of the hybrid absorbing boundary conditions in the frequency domain, we apply the complex coordinate stretching method to the spatial partial derivatives in the Clayton absorbing boundary conditions. To testify the validity of our proposed algorithm, we compare the calculated seismograms with an analytical solution. Numerical tests show the hybrid absorbing boundary condition (PML plus the stretched second-order Clayton absorbing condition) has the best absorbing performance over the other absorbing boundary conditions. In the model tests, we also successfully apply the complex coordinate stretching method to the free surface boundary condition when simulating seismic wave propagation in elastic media with a free surface.

Frequency-domain acoustic-wave modeling with hybrid absorbing boundary conditions

Geophysics ◽  
2014 ◽  
Vol 79 (5) ◽  
pp. A39-A44 ◽  
Author(s):  
Roger M. Moreira ◽  
Marco A. Cetale Santos ◽  
Jorge L. Martins ◽  
Denis L. F. Silva ◽  
Raul B. V. Pessolani ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Boundary Conditions ◽  
Frequency Domain ◽  
Absorbing Boundary Conditions ◽  
Absorbing Boundary ◽  
Wave Modeling
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