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A leapfrogadi-fdtd method based on GPU parallelism

A regional and host-side technology, applied in the field of LeapfrogADI-FDTD based on GPU parallelism, can solve the problems of long computing time and low computing efficiency

Active Publication Date: 2020-02-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0011] In view of the problems and deficiencies mentioned above, in order to solve the problems of low computational efficiency and long calculation time of the Leapfrog ADI-FDTD algorithm containing CPML absorption boundary, the present invention provides a Leapfrog ADI-FDTD method based on GPU parallelism, which is based on GPU Parallel with CPML absorbing boundary

Method used

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  • A leapfrogadi-fdtd method based on GPU parallelism
  • A leapfrogadi-fdtd method based on GPU parallelism
  • A leapfrogadi-fdtd method based on GPU parallelism

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Embodiment Construction

[0068] The present invention will be described in further detail below in conjunction with accompanying drawings and examples.

[0069] A 3D uniform rectangular waveguide model is tested in the examples. Its cross-sectional diagram is shown in Figure 7 shown. The width of the waveguide is a=20.0mm, and the Yee grid is divided into the simulation solution area, and the number of grids in the three directions is: N x =22,N y =12,N z =142, the waveguide boundary adopts a metal boundary, the thickness of the CPML layer is taken as 40 layers (40*Δz), and the position of adding the CPML absorption boundary is the No. 100 grid along the propagation direction Z, so let s 0 =99. excitation source employs a TE 10 The forced excitation source of the mode is used as a surface source, the frequency f=10GHz, the excitation source is loaded on the cross section of the waveguide input port, and the excitation source equation is:

[0070]

[0071] ω=2πf (30)

[0072] Wherein, X=0.0...

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Abstract

The invention belongs to the field of computational electromagnetics and high-performance computing, and is specifically a Leapfrog ADI‑FDTD method based on GPU parallelism. The present invention adopts Yee grid, by applying GPU parallel computing technology to the Leapfrog ADI-FDTD algorithm containing CPML absorption boundary, forming the Leapfrog ADI-FDTD algorithm containing CPML absorption boundary based on GPU parallel acceleration, while maintaining Leapfrog ADI-FDTD algorithm While the FDTD algorithm and CPML absorb the excellent characteristics of the boundary, it greatly improves the calculation efficiency, greatly saves calculation time, reduces the time period and cost of numerical simulation experiments, and meets the high-efficiency requirements of related scientific research or device design.

Description

technical field [0001] The invention belongs to the fields of computational electromagnetics and high-performance computing. It relates to a computing technology based on GPU parallel acceleration, specifically a Leapfrog ADI-FDTD method based on GPU parallelism. Background technique [0002] In the past 30 years, due to the wide application of high-power microwave and millimeter-wave source technology in science and technology and industry, high-power microwave and millimeter-wave source technology has developed rapidly. In the past 20 years, due to its important application prospects in life medicine, astrophysics, plasma heating, radar and high-speed data communication, terahertz technology has also developed rapidly. Whether it is high-power microwave and millimeter-wave applications or terahertz applications, medium-power or high-power sources are the basis. Vacuum electronic devices are the main devices that can work at room temperature and generate high-power microw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06T1/20
CPCG06F30/23G06T1/20
Inventor 金晓林刘智超李斌杨中海
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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