METHOD AND SYSTEM FOR GENERATING MULTIBLOCK-STRUCTURED MESH USED IN COMPUTATIONAL FLUID SIMULATIONS

A method of improving a 2D or 3D multiblock-structured mesh around an object that moves through a fluid medium, such as an aircraft, which is used in the design of said object accounting for a boundary layer behaviour of the fluid medium, said mesh having being generated with quadrilateral (2D) or hexahedral (3D) blocks under constraints that may cause that the mesh include irregular blocks (31) comprising the following steps: 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 modifications all along the blocks that are propagated generating several quadrilateral (2D) or hexahedral (3D) regular blocks (43, 45, 47) inside said triangular (2D) or pentahedral (3D) blocks (41). The invention also refers to a system for carrying out said method. Métodos y sistemas para mejorar mallas usadas en dinámica de fluidos computacional según los cuales en una malla estructurada multibloque 2D o 3D de un objeto que se mueve a través de un medio fluido que se usa en el diseño de dicho objeto en conexión con un esquema analítico definido, habiéndose generado la malla con bloques rectangulares (2D) ó hexaédricos (3D) bajo restricciones que causan que la malla incluya bloques irregulares (31) que no cumplen requerimientos de calidad, se siguen los siguientes pasos: encontrar los bloques irregulares (31); degenerar dichos bloques irregulares (31) fusionando bordes o lados contiguos (33, 35) de manera que se formen bloques triangulares (2D) o pentaédricos (3D) (41) y extender las modificaciones a lo largo de todos los bloques propagados; generar un número N de bloques regulares rectangulares (2D) o hexaédricos (3D) (43, 45, 47) dentro de dichos bloques triangulares (2D) o pentaédricos (3D) (41).