Method for Calculating Conservation Variable and Numerical Analysis Method of 2-dimentional Fluid Flow using the Same

摘要

PURPOSE: A conservation variables constructing method in a finite volume method and a 2D flux flow analysis method are provided to reconstruct a conservation variable in a boundary surface of a calculation lattice. CONSTITUTION: A conservation variable from a time n to n+1 is calculated. The conservation variable of a time n+1 reconstructs the conservation variable based on an area weight, and is obtained by using the conservation variable, an x-direction flux rate and a y-direction flux rate in a boundary surface of a calculation lattice, and a generating term on the calculation lattice(S40). The generating term includes a down slope term and a frictional slope term.