Mixed-order vector finite element electromagnetic field calculation method and system

A calculation method and finite element technology, applied in the field of electromagnetic field analysis, can solve the problems of low calculation accuracy and calculation efficiency, and achieve the effect of high speed, avoiding difficulty in solving, and avoiding long-term iteration.

Pending Publication Date: 2021-06-25
BEIJING UNIV OF TECH
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Problems solved by technology

[0005] Aiming at the disadvantages of low calculation accuracy and calculation efficiency in the existing technology, the embodiment of the present invention provides a hybrid order vector finite element electromagnetic field calculation method and system

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  • Mixed-order vector finite element electromagnetic field calculation method and system
  • Mixed-order vector finite element electromagnetic field calculation method and system
  • Mixed-order vector finite element electromagnetic field calculation method and system

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[0060] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0061] It should be noted that, in the description of the embodiments of the present invention, the terms "comprising", "comprising" or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements Not only those elements are included, but also other elements not expressly listed or inherent in such proc...

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Abstract

The invention provides a mixed-order vector finite element electromagnetic field calculation method and system, and the method comprises the steps of marking a first-order unit and a second-order unit of each grid unit based on the structural features of an electromagnetic field model and the size features of a tetrahedral grid; determining a transition unit according to the first-order unit and the second-order unit; performing global coding on the mixed-order unit, wherein the global coding comprises edge element coding and surface element coding; and establishing a finite element stiffness matrix by using a global coding result of the mixed-order unit so as to be used for calculating a three-dimensional finite element electromagnetic field model. The invention provides a mixed-order vector finite element electromagnetic field calculation method and system. A first-order unit is replaced by a second-order unit at the junction of the first-order unit and the second-order unit; and then global coding is carried out on a first-order unit, a second-order unit and a transition unit, a mixed-order finite element stiffness matrix equation is established and solved, long-time iteration of an adaptive subdivision technology is avoided, the problem that a large matrix is difficult to solve due to a complete second-order vector finite element is also avoided, the calculation precision is high, and the speed is higher.

Description

technical field [0001] The invention relates to the technical field of electromagnetic field analysis, in particular to a method and system for calculating a mixed-order vector finite element electromagnetic field. Background technique [0002] The physical principle of electromagnetic field calculation is to solve Maxwell's equations under different boundary conditions. The solution methods include: analytical method, approximate method, numerical method, semi-analytical and semi-numerical method, etc. The early electromagnetic field calculations were mainly based on the analytical method. Although the analytical method can directly solve the expected calculation results by obtaining simple explicit function expressions, its application range is narrow, and it has limitations for some complex electromagnetic field calculation problems. . [0003] With the development and improvement of computer science and technology, numerical calculation methods have been applied more an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23
CPCG06F30/23
Inventor 唐章宏闫玮琪张思赐王群王澈李永卿
Owner BEIJING UNIV OF TECH
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