ELEMENT REFINEMENT METHODS AND SYSTEMS IN ARBITRARY LAGRANGIAN-EULERIAN (ALE) METHOD

摘要

PROBLEM TO BE SOLVED: To provide systems and methods for refining ALE elements in a time-marching simulation.SOLUTION: A FEA model representing a physical domain is defined and used in a time-marching simulation that simulates physical phenomena of the physical domain. Some of the ALE elements are refined upon detecting a user-defined triggering condition. Each of said some of the ALE elements is refined into a number of child elements. When an ALE element contains more than one material, volume fractions representing respective materials are calculated in each of the child elements right after each refinement. At each advection phase, each donor maps its flux to one or more receptors. When a donor maps its flux to multiple receptors, each receptor calculates its own share of the flux from the donor. When the donor contains more than one material, each receptor needs to describe such situation.