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Microwave tube simulating two-dimensional finite element mesh automatic generation

Author: LiaoCheng
Tutor: JinXiaoLin
School: University of Electronic Science and Technology
Course: Electronic Science and Technology
Keywords: Microwave tubes Finite Element Method Two-dimensional triangular mesh generation Advancing front method Advance by layer
CLC: TN12
Type: Master's thesis
Year: 2011
Downloads: 21
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Abstract

In recent years, with the rapid development of modern computer technology, the use of computer simulation, the design of microwave technology has gradually matured. For one of the electromagnetic field simulation, finite element method to solve such complex engineering calculations of the importance of numerical methods. The finite element mesh as the core and pre-processing difficulties, finite element analysis is a prerequisite. Meshing technology emerged in the early, mostly by hand to complete this task. However, with the complexity of finite element problems growing, artificial subdivision has been completely unable to meet the engineering application needs. Therefore, the development of high efficiency, good accuracy, automatic mesh generation technology is extremely important. This dissertation focuses microwave tubes dimensional mesh model were studied. Two-dimensional model for microwave tubes boundary is more complicated and has a simply connected, non-convex characteristics, this paper chose high quality mesh boundary advancing front method for meshing. On the flat area of ??advancing front method are summarized, introduced in recent years mesh hot research; On this basis, the authors think carefully and choose the more suitable for microwave tubes to generate two-dimensional model grid data structure and to promote the idea by layer, and gives these data structures and by promoting the idea of ??a new layer implementations. The following is the main work of this thesis: one of the advancing front of the plane method conducted in-depth research, and track and analyze the past two years abroad mesh research focus, a lot of work on their predecessors were classified and summary; 2. using the classic data structures Alternative Digital Tree (ADT tree) and quad-tree to manage the front lines and nodes, and according to the characteristics of these data structures proposed new storage solutions and retrieval algorithms; 3 To take full advantage advancing front method boundary mesh and good quality, the paper adopted a strategy to promote by layer, and gives a new method; 4 AFT algorithms implemented in order to solve the problem, put forward a series of simple and practical grid generation rules. The paper also gives a few mesh using the algorithm for instance, can be seen through these examples that the algorithm generates high quality mesh, to better adapt to the complex two-dimensional model of microwave tubes border, with some The practical value will be used in microwave tubes simulation.

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