Patent ID: 8473261

Claim:
A method of improving a 2D or 3D multiblock-structured mesh of an object that moves through a fluid medium, which is used in the design of said object in connection with a defined analytical scheme, said mesh generated with rectangular (2D) or hexahedral (3D) blocks under constraints that may cause the mesh to include irregular blocks ( 31 ) not complying with quality requirements, said method comprising the following steps: defining as irregular blocks ( 31 ) those blocks having at least a pair of contiguous sides (2D) or faces (3D) forming an angle A in the range of 120° to 180° and defining as regular blocks those blocks not having any pair of contiguous sides (2D) or faces (3D) forming an angle A in the range of 120° to 180°; finding irregular blocks ( 31 ) in the mesh; degenerating said irregular blocks ( 31 ) merging contiguous edges or sides ( 33 , 35 ) in one edge or side ( 37 ) so that triangular (2D) or pentahedral (3D) blocks ( 41 ) are formed, and extending the merging of contiguous edges or sides ( 33 , 35 ) in one edge or side ( 37 ) all along blocks that are propagated; and generating a number N of rectangular (2D) or hexahedral (3D) regular blocks ( 43 , 45 , 47 ) inside said triangular (2D) or pentahedral (3D) blocks ( 41 ).