Spatial discrete grid point reorganization and integralization method

A space discrete, grid point technology, used in design optimization/simulation, special data processing applications, CAD numerical modeling, etc.

Active Publication Date: 2021-02-05
CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
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[0005] Currently, no metho...

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  • Spatial discrete grid point reorganization and integralization method
  • Spatial discrete grid point reorganization and integralization method
  • Spatial discrete grid point reorganization and integralization method

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[0041] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0042] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0043] Step 1: Define grid point structure array node Used to store grid point information and define grid block structure array block Used to store grid block information. The structure of each grid point [ node i ] contains the grid point serial number [ node i ] index , grid point variable [ node i ] var (Variables for judging grid point type), grid point coordinates [ node i ] xyz .

[0044] figure 1 The serial numbers...

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Abstract

The invention discloses a spatial discrete grid point reorganization and integralization method, belongs to the field of automatic grid generation in finite element numerical simulation, and aims to eliminate the limitation of finite element grid automatic generation and grid deformation technologies in some problems. Therefore, full-automatic generation of the finite element grid with the complexshape under local shape change is realized by adopting a structure and non-structure mixed mode. However, the unstructured grids are arranged disorderly, so that discretized grid points arranged disorderly need to be reorganized to form a data structure capable of being used by a grid algorithm; the method is suitable for quadrilateral structure grids, discrete grid points are classified throughthe connection relation of the grid points, adjacent grid points are searched step by step in a recursive search mode, and spatial discrete grid points are reorganized line by line according to the mode in a grid block-by-grid block-by-line mode.

Description

technical field [0001] The invention relates to the field of discrete grid generation in CAE numerical simulation, in particular to the field of automatic grid generation in finite element numerical simulation, specifically a spatial discrete grid point renormalization method. Background technique [0002] With the rapid development and maturity of computer hardware and numerical simulation algorithms, numerical simulation technology based on the finite element method (FEM) has gradually been widely used in many fields, providing a powerful tool for exploring the future potential of industries and supporting the continuous development of many industries. develop. As the discrete basis of finite element numerical simulation, grid determines the accuracy of simulation results and is an important factor affecting simulation convergence and efficiency. However, the finite element mesh generation of complex shapes is still a challenging work, which is time-consuming and labor-in...

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Application Information

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IPC IPC(8): G06F30/23G06F111/10
CPCG06F30/23G06F2111/10
Inventor 孙岩邓学霖赵莹余婧郭勇颜江盟刘旺林邓彦增
Owner CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
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