A method and device for generating structural grid based on neural network

Abstract

The embodiments of the present invention provide a method and device for generating a structural grid based on a neural network, the method includes: acquiring a model of a target object; dividing the model into multiple closed areas by drawing grid lines of the object plane of the model; randomly generating The value of the first parameter field of the closed area; the neural network is trained according to the value of the first parameter field, and the trained neural network model is obtained; the value of the second parameter field of the closed area is calculated according to the point value set by the user; The value of the second parameter domain is input into the trained neural network model, and the coordinate value of the grid point in the second physical domain output by the neural network model is obtained; according to the coordinate value of the grid point in the second physical domain, the surface of the model of the target object is generated Mesh, the surface mesh is a structured mesh. It can be seen that in this scheme, the surface mesh of the model of the target object is automatically generated based on the neural network, with less human intervention, which improves the automation degree of mesh generation.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of computational fluid dynamics, and in particular, to a method and device for generating a structural grid based on a neural network. Background technique [0002] Mesh generation is the preprocessing step of CFD (Computational Fluid Dynamics, Computational Fluid Dynamics) analysis, and the size and quality of the generated mesh will affect the CFD analysis results. Grids include structural grids. Structural grids usually have a uniform topology. The grid area can be divided into regular elements. Structured grids are usually suitable for solving simple and geometrically regular models. [0003] At present, the TFI (Transfinite Interpolation, Transfinite Interpolation) algorithm is usually used to generate structural meshes. However, as the grid size gradually increases and the shape becomes more and more complex, the automation degree of using the TFI algorithm to generate the struct...

AI Technical Summary

Problems solved by technology

However, as the size of the grid gradually increases and the shape becomes more and more complex, the automation of the structural grid generated by the TFI algorithm is relatively low.

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