Patent ID: 7921002

Claim:
A simulation method for flow of fluid around a body, comprising: dividing a target domain of simulation into a plurality of computational unit domains named cubes; generating an uniform number of Cartesian mesh elements named cells, in each of the cubes; performing computation in the cubes in each computational step; and exchanging data between adjacent cubes after completion of each computational step, wherein in dividing the target domain of simulation into cubes, division is repeated while a ratio between adjacent cube sizes is maintained in a certain range until cubes including a boundary between the body and the fluid, is small enough to obtain a desired resolution so that sizes of the cubes are appropriately determined according to a shape of the body, wherein, near the boundary between the body and the fluid in a cube including the boundary, a subgrid with mesh finer than mesh of the cells is generated besides the cells so that a higher resolution may be obtained near the boundary, wherein the subgrid comprises new computational nodes added independently of the Cartesian mesh, the new computational nodes are defined by extending an interface cell point toward an immersed surface in several steps, and each layer within the subgrid remains a constant distance from the boundary.