METHOD AND DEVICE FOR CALCULATING NUMERICAL FLUID, PROGRAM, AND RECORDING MEDIUM

PROBLEM TO BE SOLVED: To achieve a numerical fluid calculation device integrated with a volume CAD system. SOLUTION: A numerical fluid calculation device 1 includes: a modeling part 11 which divides an object Ω into an internal cell of hexahedron and a boundary cell of (6+N)-hedron so as to become N≤Nmax; a boundary cell information generation part 13 which computes an area of an area A_kt of a triangular cutting plane kt of the boundary cell; and a boundary cell coefficient setting part 15 which computes from the area A_kt of the triangular cutting plane, boundary conditions _kt, and (nabla ) _kt, an integral value on the triangular cutting plane kt of convection flux ρU and an integral value on each triangular cutting plane of a diffusion flux Γnabla , which are contained in an algebraic equation to be solved. COPYRIGHT: (C)2011,JPO&INPIT