Patent Document ID: 20120296616
Application ID: 13460394
Patent Flag: 0

Claim One:
1. A three-dimensional fluid simulation method for analyzing a flow of fluid around an object by the use of a computer comprising: a process (a) in which a first mesh of a three-dimensional space where the fluid flows is defined in the computer, wherein the first mesh is defined by non-uniformly splitting the space with respect to each of three degrees of freedom of the space, a process (b) in which a second mesh of the space is defined in the computer, wherein the second mesh is defined by non-uniformly splitting the space with respect to two of the three degrees of freedom and uniformly splitting the space with respect to the remaining one of the three degrees of freedom, a process (c) in which an object model of the object is defined in the computer, wherein the object model is defined by splitting the object into a finite number of cells, and the object model is disposed in the first mesh, a process (d) in which boundary conditions are given and a motion equation relating to the fluid around the object model is defined, and the velocity of the fluid is computed from the motion equation, a process (e) in which a flow imbalance is computed for each cell based on the velocity of the fluid obtained in the process (d), a process (f) in which a pressure correction equation relating to the fluid is defined based on the flow imbalance, a process (g) in which the obtained flow imbalance is mapped onto the second mesh, and the pressure correction of the fluid is computed, and a process (h) in which the pressure correction obtained in the process (g) is mapped onto the first mesh, and the processes (d)-(h) are repeated until the flow imbalance obtained in the process (d) is converged along with motion equations.