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FETD (finite-element time-domain) Analog simulation method based on parallel algorithm

A technology of parallel algorithm and simulation method, applied in the field of computational electromagnetism, which can solve the problems of low efficiency in solving time-advancing equations in cyclic iterations, and achieve the effect of ensuring calculation accuracy and improving calculation efficiency

Active Publication Date: 2017-10-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method to solve the problem of low efficiency of the time-advancing equation loop iterative solution in the FETD calculation process

Method used

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  • FETD (finite-element time-domain) Analog simulation method based on parallel algorithm
  • FETD (finite-element time-domain) Analog simulation method based on parallel algorithm
  • FETD (finite-element time-domain) Analog simulation method based on parallel algorithm

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Embodiment Construction

[0018] The technical solutions of the present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0019] Refer to the process figure 2 A kind of FETD emulation method based on parallel algorithm comprises the following steps:

[0020] A. Determine the structure of the electric vacuum device to be analyzed.

[0021] The electric vacuum device structure to be analyzed is selected, such as waveguide, rectangular window, box-shaped window, coaxial window, etc., and the rectangular waveguide is selected in this embodiment.

[0022] B. Modeling the device structure of step A, and establishing a corresponding geometric structure model;

[0023] The present invention is based on the rectangular waveguide structure, the geometric structure model after grid discretization is as follows figure 1 shown.

[0024] C. Determining the governing differential equation form of the electromagnetic boundary value problem for the structure o...

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Abstract

The invention discloses an FETD (finite-element time-domain) analog simulation method based on a parallel algorithm and belongs to the field of computational electromagnetics. According to the method, loop iteration solving of an equation is achieved by replacing conventional serial computation by parallel computation based on existing algorithms; in the parallel solving process, a matrix is introduced to convert an equation set in order to overcome dependent relationship of three adjacent moment unknown quantities in a time marching equation, so that paralleling is made feasible. The method enables the problem of low loop iteration solving efficiency of a time marching equation in FETD to be solved at the premise of ensuring computation precision.

Description

technical field [0001] The invention belongs to the field of computational electromagnetics, and in particular relates to an FETD simulation method based on a parallel algorithm. Background technique [0002] Since Maxwell's equations were proposed in 1864, people's research on electromagnetic waves has continued to deepen, and the application of electromagnetic theory has spread to other scientific fields such as life science, medicine, material science, and information science. For complex electromagnetic problems, the experimental method is often limited by the high cost of the test and the long research period, and even the experiment cannot be realized. In the theoretical analysis, due to the complexity of the theoretical model, there is a large gap in the analytical solution of classical electromagnetics. Limitations can't even be achieved at all. In order to solve this kind of electromagnetic problems, with the development of computer software and hardware calculatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/12G06F17/50
CPCG06F17/12G06F30/23G06F2111/10
Inventor 徐立陈林峰尹俊辉杨中海李斌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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