Magnetic field distribution of silver blood cancer with finite difference time domain (FDTD) simulation

2021 ◽  
Author(s):  
Vinda Zakiyatuz Zulfa ◽  
Ulya Farahdina ◽  
Muhammad Firdhaus ◽  
Ihwanul Aziz ◽  
Nasori ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Finite Difference ◽  
Field Distribution ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Magnetic Field Distribution ◽  
Fdtd Simulation ◽  
Blood Cancer ◽  
Difference Time

Quantifying Sub-gridding Errors in Standard and Hybrid Higher Order 2D FDTD Simulations

2021 ◽  
Vol 35 (11) ◽  
pp. 1428-1429
Author(s):  
Madison Le ◽  
Mohammed Hadi ◽  
Atef Elsherbeni
Keyword(s):  
Finite Difference ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Contrast Ratio ◽  
Higher Order ◽  
Fdtd Simulation ◽  
Fdtd Simulations ◽  
2D Fdtd ◽  
Difference Time

Sub-gridding errors for a 2D Finite-Difference Time-Domain (FDTD) simulation are compared for both the standard FDTD and Hybrid higher order FDTD cases. Subgridding contrast ratios of 1:3, 1:9, 1:15, and 1:27 are considered and analyzed. A correlation is seen between the increase of contrast ratio with the increase of sub-gridding errors for both standard and hybrid cases. However, a trend of errors reduction when using hybrid formulations over standard formulations is apparent for each contrast ratio.

Field Distribution Adjacent to Apertures Located on Infinite Plates

2014 ◽  
Vol 602-605 ◽  
pp. 335-338
Author(s):  
Run Xiong ◽  
Bin Chen ◽  
Zheng Jun Wang
Keyword(s):  
Electromagnetic Field ◽  
Field Distribution ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Infinite Plate ◽  
Fdtd Simulation ◽  
Electromagnetic Field Distribution ◽  
Coupling Principle ◽  
Difference Time ◽  
Electromagnetic Field Component

In this paper, electromagnetic field distribution adjacent to the aperture is analyzed to help deducing the coupling principle of apertures. The aperture is located on an infinite plate to avoid the effect of other structures. Taking advantage of high-resolution standard finite-difference time-domain (FDTD) simulation, it is possible to observe the electromagnetic field distribution adjacent to the aperture. From analyses, it can be seen that the electromagnetic field component is dramatically varied adjacent to the aperture, and conclusions drawn here is helpful to deduce the coupling principle of apertures.

An Algorithm of 3-D ADI-R-FDTD Based on Non-Zero Divergence Relationship

2011 ◽  
Vol 317-319 ◽  
pp. 1172-1176
Author(s):  
Xiu Hai Jin ◽  
Yi Wang Chen ◽  
Pin Zhang
Keyword(s):  
Magnetic Field ◽  
Finite Difference ◽  
Electric Field ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Fdtd Method ◽  
Memory Requirement ◽  
Alternating Direction ◽  
Relationship Of ◽  
Difference Time

In this letter, an alternating-direction reduced finite-difference time-domain (ADI-R-FDTD) method is presents. It is proven that the divergence relationship of electric-field and magnetic-field is non-zero even in charge-free regions, when the electric-field and magnetic-field are calculated with alternating-direction finite-difference time-domain (ADI-FDTD) method in 3 dimensions case, and the expression of the divergence relationship is derived. Based on the non-zero divergence relationship, the ADI-FDTD method is combined with the reduced finite-difference time-domain (R-FDTD) method. In the proposed method, the memory requirement of ADI-R-FDTD is reduced by1/12 of the memory requirement of ADI-FDTD averagely in 3D case. The formulation is presented and the accuracy and efficiency of the proposed method is verified by comparing the results with the conventional results.

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