Patent ID: 9123166
Filing Date: 2015-09-01
Classification: G06T

Abstract:
1. A method of connecting three-dimensional structured meshes to form a conformal mesh, for solutions of flow problems, the method comprising the steps of: forming an interface by overlaying surfaces of two structured meshes, each structured mesh comprising hexahedra; defining an interface set of mesh points in the interface comprising mesh points from each surface and intersection mesh points formed at the intersection of mesh lines; identifying mesh points in the interface set that are within a first predetermined distance of each other and merging them to form merged mesh points, the first predetermined distance is in the range of 5 to 25% of a mesh size of the smaller of the two structured meshes; identifying mesh points of one mesh in the interface that are within a second predetermined distance of a line of the other mesh and projecting these mesh points to the corresponding mesh line to form projected mesh points; generating an interface layer in the form of an unstructured mesh formed of triangles and quadrilaterals, including the mesh points from each surface, the merged mesh points, the projected mesh points and the intersection mesh points; and inserting a node at the center of each hexahedra, and producing an unstructured layer of cells between the two structured meshes by joining the nodes to the mesh points of the interface layer so as to form tetrahedra and pyramids.