A method, device, equipment and medium for calculating the advancement direction of a volume grid layer

In the three-dimensional mesh generation, the node surface area angle clustering and plane normal optimization of the target surface mesh are solved, and efficient and accurate calculation of the advance direction of the body mesh layer is achieved.

CN120430199BActive Publication Date: 2025-09-02CHONGQING CHANGAN AUTOMOBILE CO LTD
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Patent Information

Application Number
CN202510920714.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-04
Publication Date
2025-09-02
Estimated Expiration
2045-07-04

AI Technical Summary

Technical Problem

When generating a three-dimensional mesh, the traditional body mesh layer propulsion method is prone to cause the mesh quality to not meet the calculation requirements, especially in the characteristic point areas, and the traditional propulsion direction calculation method has limitations, resulting in propulsion direction deviation.

Method used

By determining multiple target nodes of the target surface mesh, multiple mesh patches of each node are obtained, the angles between patches are calculated for clustering, different planes are identified, plane normals are calculated, and direction optimization is performed based on the propulsion direction of adjacent nodes, target propulsion direction is determined, and geometric analysis and direction optimization are combined to overcome propulsion direction deviation.

Benefits of technology

The calculation accuracy and efficiency of the propulsion direction of the body mesh layer are improved, the quality of the body mesh is ensured, the error of the node propulsion direction is avoided, and the generation of high-quality body mesh is achieved.

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Abstract

The present invention relates to the field of fluid simulation calculation technology, and discloses a method, device, equipment and medium for calculating the propulsion direction of a volume mesh layer. The method comprises: determining a target surface mesh containing multiple target nodes; for each target node, obtaining multiple mesh facets of the current target node from the target surface mesh; clustering the mesh facets based on the angles between all mesh facets of the current target node, and determining at least one target plane of the current target node; respectively calculating the plane normals of each target plane, and determining the current propulsion direction of the current target node based on the plane normals of each target plane; optimizing the current propulsion direction of the current target node based on the angle between the current propulsion direction of other target nodes adjacent to the current target node and the current propulsion direction of the current target node, and determining the target propulsion direction of the current target node, thereby overcoming the propulsion direction deviation caused by the number of meshes, and thus ensuring the quality of the volume mesh.
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