An Automatic Block Encryption Method for Structural Grids

Abstract

The invention discloses an automatic block encryption method for a structured grid, comprising: step 1, grouping grid blocks of the original structured grid according to the boundary conditions of the original structured grid; step 2, according to the encryption coefficient, without changing the On the premise of the spatial topology of the original structural grid, the grid blocks of each group are encrypted and reconstructed; step 3, the encrypted and reconstructed groups are reassembled, and the encrypted reconstruction is obtained by updating the boundary conditions between different groups. Step 4: Check the refined reconstructed grid and output the refined reconstructed grid and its boundary conditions. According to the boundary conditions of the original structural grid, the invention automatically performs grouping, automatically performs encryption and reconstruction, and automatically outputs the refined and reconstructed grid and its boundary conditions, thereby realizing the automatic block encryption of the structural grid without manual intervention. , which is not only efficient and stable, but also eliminates errors that may be introduced by manual operation.

Description

technical field [0001] The invention relates, in particular, to an automatic block encryption method for structural grids. Background technique [0002] At present, due to the excellent computational efficiency and reliable computational accuracy, the structured grid method is still in the mainstream in Computational Fluid Dynamics (CFD). However, the generation of computational grids in the structured grid method is a labor-intensive and time-consuming task. 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 algorithms of CFD include technologies such as overlapping grid and patched grid, which can locally refine the structural grid to solve the problems that are diffic...

AI Technical Summary

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

Images