Patent Document ID: 20050182603
Application ID: 10782634
Patent Flag: 0

Claim One:
1. A method for tracking the flow of N materials and their interfaces in a computational domain, the method comprising the steps of: (a) creating a macrogrid including control volumes on a computational domain in which N materials and their interfaces are to be tracked; (b) overlaying a microgrid including microgrid cells upon the macrogrid with each of the microgrid cells being coupled to a control volume; (c) initializing the macrogrid and control volumes with initial and boundary conditions; (d) assigning a unique identifier to each of the N materials and to the microgrid cells; (e) calculating volume fractions for the N-materials in the control volumes; (f) solve equations of motion upon the macrogrid and control volumes utilizing the calculated volume fractions to arrive at local velocity conditions for the control volumes; (g) advecting the microgrid cells within the microgrid in response to the calculated local velocity conditions in the control volumes such that voids and overlaps of the microgrid cells in the microgrid occur; (h) reallocating the microgrid cells so that only one material is in each microgrid cell to effectively conserve mass and satisfy local fluid fraction gradient values; and (i) repeating steps (e)-(h) until a satisfactory number of time steps has occurred to complete the simulation.