Unstructured grid structured processing method based on array plane propulsion

Abstract

The invention discloses an unstructured grid structured processing method based on array plane propulsion, and aims to solve the problems that in the unstructured grid structured processing, the localdirection is irrelevant to the application problem, the orthogonality of the triangular unstructured grids is poor, and the calculated amount is larger. According to the technical scheme, the methodis characterized by generating a two-dimensional unstructured grid; defining and initializing a key element array and a local direction array of an unstructured grid unit according to an unstructuredgrid related data structure; and determining the key elements and local directions of the unstructured grids by adopting the array plane propulsion, and outputting a key element array and a local direction array to realize the unstructured grid structured processing. By adopting the method, the local directions of the two-dimensional triangular, quadrilateral or triangular-quadrilateral hybrid unstructured grid can be efficiently generated, the orthogonal performance of the local directions is improved, and one local direction is close to the normal direction of the wall surface, so that the precision of the temperature gradient of the rocket wall surface is effectively improved, and the redundant calculation of an exhaustion method is avoided.

Description

technical field [0001] The invention relates to a method for structured processing of unstructured grids, in particular to a method for structured processing of unstructured grids by adopting front advance to generate local directions of unstructured grids so that the unstructured grids have regularity and directionality. Background technique [0002] In the process of computer analysis and processing engineering applications, grids are often used to discretize continuous physical space. As the complexity of engineering application research problems increases, the number of grids required for spatial discretization increases sharply. Improving the computational efficiency and accuracy of engineering applications has become a hot research topic at home and abroad. Grid processing is one of the important methods to solve these problems, and there are different grid processing methods for different grid types. [0003] At present, grids are mainly divided into two categories: ...

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Problems solved by technology

[0052] The technical problem to be solved by the present invention is: Aiming at the problems that the local direction in the unstructured grid structure processing has nothing to do with the application problem, the triangular unstructured grid has poor The method of structuring the unstructured grid can efficiently generate the local directions of the two-dimensional triangular, quadrilateral or triangular-quadrilateral mixed unstructured grid, improve the orthogonality performance of the local directions, and one of the local directions is close to the normal direction of the wall , effectively improving the accuracy of the rocket wall temperature gradient

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