METHOD FOR SIMULATING FLUID FLOW BY USING THE LATTICE BOLTZMANN THEORY AND RECORDING MEDIUM FOR PERFORMING THE METHOD

摘要

The present invention relates to a fluid flow simulation method and a recording medium for performing the same and, more specifically, to a fluid flow simulation method and a recording medium for performing the same using the lattice Boltzmann theory or the lattice Boltzmann method. The lattice Boltzmann theory which simulates a real fluid flow in a manner that a virtual particle moves from one lattice point to another lattice point may be used in, for example, a solution to the Navier-Stokes equation. The core of the lattice Boltzmann method is a rule for setting a method for rearranging particle speed before and after collision by assuming that the collision between the particles occurs every unit time interval as the virtual particle moves from one lattice point to another lattice point every unit time interval. The prevent invention obtains the rearrangement rule having discrete speed as a parameter in order to enhance a conventional unstable rearrangement rule, and sets the parameter to be maintained with a non-negative value for macroscopic speed and temperature variations required for a simulation, thereby obtaining the rearrangement rule having a wider simulation applying range.