PRE/POST-PROCESSING METHOD FOR THREE DIMENSIONAL FINITE VOLUME ANALYSIS

摘要

PURPOSE: A pre-/post-processing method for three dimensional finite volume analysis is provided to express the surface of a structure as triangular meshes using multiple triangles, thereby presenting realistic analysis results of fluid flows. CONSTITUTION: A pre-processing method for three dimensional finite volume analysis comprises the steps of: making the surface of a structure into multiple three-dimensional grid cells which form triangular meshes(S210); acquiring section curves, the intersection points or lines which are formed by intersections in three-dimensional orthogonal planes with the triangular meshes of the structure(S220); extracting boundary cells, the gird cells being intersected with the surface of the structure(S230); generating a patch boundary on a plane of each boundary cell, which is generated by intersection of each boundary cell with boundary planes of the structure, by applying the section curves on the tree-dimensional orthogonal planes to each grid cell; and cutting the exterior portion of the structure using the patch boundary. [Reference numerals] (AA) Start; (BB) End; (S210) Latticing into three-dimensional grid cells; (S220) Obtain section curves by intersecting three-dimensional orthogonal planes and triangular meshes; (S230) Extract boundary cells using the section curves; (S240) Generate a patch boundary using the section curves; (S250) Cut the exterior portion of a structure in the boundary cells using the path boundary