APPROXIMATE CALCULATION METHOD BY COMPOSITE SOLUTION OF THREE-DIMENSIONAL SOLUTION IN HARD SYSTEM

摘要

PROBLEM TO BE SOLVED: To easily approximate a three-dimensional solution by using a one-dimensional solving method (including solutions other than Geer formula) developed specially for an existing hard system in a velocity field of a multicomponent system accompanying chemical reaction.;SOLUTION: A concentration calculation method at an arbitral space lattice point P in the velocity field in an analysis area finds a proximity point flowing to the lattice point P from each velocity component of six proximity points around. For each component, the existing one-dimensional solving method is used to calculate a one-dimensional solution. Using velocity component for flowing into the point P, weighted average of these solution is calculated and the value is regarded as the approximate value of concentration at the point P. In addition, iterative calculation using the values of all lattice points obtained through these series of procedures as respective start values of all lattice points for the next time is repeated for a finite number of times. A final value obtained by the above procedures is regarded as the approximate solution of a three-dimensional simultaneous first partial differential equation.;COPYRIGHT: (C)2005,JPO&NCIPI