A method, medium and apparatus for reconstructing a structured grid from a two-dimensional unstructured grid
A technology of unstructured grid and grid, which is applied in the direction of instrumentation, calculation, image data processing, etc., can solve the problems of calculation failure and failure to achieve the improvement effect, and achieve the effect of improving the calculation performance
Active Publication Date: 2022-07-29
CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
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Problems solved by technology
Although multi-grid technology has the ability to improve computing efficiency, its improvement effect is directly related to the aggregation quality of coarse grids. Inferior coarse grids not only fail to achieve the expected improvement effect, but even lead to calculation failures.
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[0040] The grid blocks involved in this embodiment are as follows: figure 1 As shown, it is divided into two directions: row and column. The number of grid cells in the row direction is I, and the number of grid cells in the column direction is J. The rows and columns form a grid block. In addition, for the convenience of expression, the symbol [N] is used to denote the uniformly numbered Nth grid unit, so the first grid unit of the first grid block can be denoted as [1].
[0041] like figure 2 As shown, this embodiment proposes a method for reconstructing a structured grid from a two-dimensional unstructured grid, including the following steps:
[0042] S1, generate an unstructured grid;
[0043] Specifically, grid software is used to generate structured grids, and output as unstructured grids according to the format of unstructured grids.
[0044] S2, construct the adjacent relationship between unstructured grids;
[0045] Specifically, the grid cells of the unstructure...
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The present invention provides a method, medium and device for reconstructing a structured grid from a two-dimensional unstructured grid; the method includes the following steps: S1, generating an unstructured grid; S2, constructing a phase between the unstructured grids neighbor relationship; S3, reconstruct grid rows based on the adjacent relationship between unstructured grids; S4, reconstruct grid rows and then reconstruct grid blocks according to the arrangement rules of structured grids. The invention realizes the process of reconstructing the structured grid from the two-dimensional unstructured quadrilateral grid, and obtains the information of the structured grid, so that the unstructured solving software can carry out part of the calculation in the manner of the structured grid, such as aggregation of multiple coarse grids In other respects, the calculation effect unique to the structural grid can be obtained, and the calculation performance of the unstructured solving software can be improved.
Description
technical field [0001] The invention relates to the technical fields of computer aided engineering (CAE), computational fluid dynamics (CFD) and numerical simulation software, in particular to a method, medium and device for reconstructing a structured grid from a two-dimensional unstructured grid. Background technique [0002] Computational grid is the basic carrier of fluid mechanics numerical simulation technology, which is used to store basic information such as the relationship between the volume, surface, and point of the grid. According to the different topological relationships between grid cells, it can be divided into structured grids and unstructured grids. The elements of the structured grid are regularly arranged. Compared with the non-structured grid, it contains more relational information between the elements. The unequal characteristics of the structured grid and the The transformation from structured grids is easy to achieve, while the transformation from ...
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IPC IPC(8): G06T17/20
CPCG06T17/205
Inventor 王建涛马率张健牟斌张露王子维王新建刘钒蒋浩张伦
Owner CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT