Mesh mapping method and device for unstructured mesh, medium and product

The invention discloses a grid mapping method and device of an unstructured grid, a medium and a product, and relates to the field of numerical computation.The method comprises the steps that grid attributes used for describing the unstructured grid of a physical field are obtained; wherein the grid attributes comprise grid serial numbers, grid types and nodes sorted according to a connection sequence; reconstructing a two-dimensional mesh of the physical field into a plurality of triangular meshes or reconstructing a three-dimensional mesh into a plurality of tetrahedral meshes according to the mesh attributes, and searching triangular meshes or tetrahedral meshes intersected with a target field mesh in a source field mesh layer of the reconstructed physical field; calculating the intersection area of the two-dimensional grids according to the intersection point coordinates of the intersected triangular grids, or calculating the intersection volume of the three-dimensional grids according to the intersection