Automatic partitioning and encryption method for structural grid

Abstract

The invention discloses an automatic partitioning and encryption method for a structural grid. The method comprises the following steps: step 1, grouping grid blocks of an original structural grid according to boundary conditions of the original structural grid; step 2, according to the encryption coefficient, on the premise that the space topology of the original structure grid is not changed, performing encryption reconstruction on the grid block of each group; step 3, reassembling the encrypted and reconstructed groups, and updating boundary conditions among different groups to obtain an encrypted and reconstructed grid; and step 4, checking each item of the encrypted reconstructed grid, and outputting the encrypted reconstructed grid and boundary conditions thereof. According to the boundary conditions of the original structural grid, grouping is automatically carried out, encryption reconstruction is automatically carried out, and the encryption reconstruction grid and the boundary conditions of the encryption reconstruction grid are automatically output, so that automatic block encryption of the structural grid is realized, manual intervention is completely not needed, high efficiency and stability are realized, and errors possibly caused by manual operation are completely eradicated.

Description

technical field [0001] The invention relates, in particular, to an automatic block encryption method for structured grids. Background technique [0002] At present, due to its excellent calculation efficiency and reliable calculation accuracy, the structured grid method is still in the mainstream in CFD (Computational Fluid Dynamics). However, the calculation grid generation in the structured grid method is a very labor-intensive and time-consuming work. When the local flow field needs to adjust the simulation strategy and the grid density needs to be increased or decreased during the numerical simulation process, the user needs to do a lot of manual work. Operation and must have enough experience to obtain satisfactory results. At this time, the consumption of human resources is more prominent. The classic algorithm of CFD includes technologies such as overlapping grid (overset grid) and patched grid (patched grid), which can locally refine the structural grid to solve pro...

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Problems solved by technology

However, the calculation grid generation in the structured grid method is a very labor-intensive and time-consuming work. When the local flow field needs to adjust the simulation strategy and the grid density needs to be increased or decreased during the numerical simulation process, the user needs to do a lot of manual work. operation and must have enough experience to obtain satisfactory results. At this time, the consumption of human resources is more prominent

The classic algorithm of CFD includes technologies such as overlapping grid (overset grid) and patched grid (patched grid), which can locally refine the structural grid to solve problems that are difficult to solve with conventional docking grids, but these methods require users to Manually reconstructing the topology of the spatial grid, re-projecting the interface, and dividing the calculation grid is a lot of work, which greatly reduces the work efficiency of this type of research

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