A 2D Region Automatic Decomposition Method for Structured Quadrilateral Mesh Generation
A grid generation and automatic decomposition technology, applied in design optimization/simulation, constraint-based CAD, instruments, etc., can solve the problems of increasing errors, time-consuming, and restricting automatic block-based structured grid generation tools, etc., to achieve improved Generating efficiency, effects that enhance precision and speed
Active Publication Date: 2022-03-01
HANGZHOU DIANZI UNIV
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
On the one hand, the introduction of manual links requires engineers to have strong engineering experience, on the other hand, it is very time-consuming and increases the possibility of errors
These shortcomings restrict the birth of automatic block structured grid generation tools
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0070] Figure 4It is the two-dimensional aircraft wing shape (including the main wing in the middle and the flaps at both ends, a total of three sections of the wing structure) and its outer flow field calculation domain, Figure 5 The automatic domain decomposition results of a certain two-dimensional airfoil calculation domain using the present invention are shown. The present invention can automatically realize the automatic decomposition of the calculation domain, and obtain multi-block high-quality four-sided structure sub-domains, thereby improving the block structured grid (such as Figure 6 a, 6b, and 6c) Generation efficiency and block structured grid quality.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for automatically decomposing two-dimensional regions oriented to the generation of structured quadrilateral grids. Currently, the generation of structured meshes for complex geometric shapes mainly relies on manually decomposing complex regions into regular subregions, which increases the possibility of errors. Steps of the present invention: establish a two-dimensional geometric model for analyzing the entity object, and discretize it into a triangular mesh model; establish a control partial differential equation of the smooth vector field in the inner region of the two-dimensional geometric model according to the geometric boundary constraints, and use the boundary element numerical method to solve the problem ; Establish the smooth frame field corresponding to the smooth vector field, and realize the automatic decomposition of the two-dimensional geometric model by analyzing the singular structure of the smooth frame field. The invention can automatically and quickly obtain the high-quality partition results of arbitrary complex two-dimensional geometric models, and provides input for subsequent generation of multi-block structured quadrilateral grids.
Description
technical field [0001] The invention relates to an area decomposition process for generating block structured quadrilateral grids in preprocessing in the field of numerical simulation, in particular to a two-dimensional area automatic decomposition method for structured quadrilateral grid generation. Background technique [0002] Mesh generation is a preprocessing process in numerical simulation techniques such as finite element method, finite volume method, and finite difference method. This process divides a continuous geometric area into a combination of finite basic geometric shapes. These basic geometric shapes are called grids. cell. The commonly used unit types are triangular unit, quadrilateral unit, tetrahedral unit and hexahedral unit, etc.; according to whether the topological structure of the grid unit is regular, the grid can be divided into structured grid and unstructured grid. In numerical simulation, structured grids are favored due to their higher solution...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/15G06T17/10G06F111/04
CPCG06T17/10G06F2111/04G06F30/20
Inventor 徐岗何寿平肖周芳许金兰吴卿
Owner HANGZHOU DIANZI UNIV
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
