| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensitivity analysis system for numerical analysis. SOLUTION: In the case where numerical analysis is conducted, a target event is converted into a mathematic model (generally, differential equation) (S110). In order to solve this by a computer, a discretized algebraic equation (discretized equation) is obtained, by a discretizing technique, from the differential equation obtained by modeling (S120). Next, a continuous differential equation (modified equation) is obtained again, by an analytical method such as Taylor analysis, from the algebraic equation (S130). For the modified equation, the sensitivity regarding parameters in calculation of numerical values such as time pitch width and space lattice width is obtained, thereby evaluating the sensitivity regarding numerical parameters of the numerical calculation results (S140). From the sensitivity, a strict solution is estimated by the numerical parameters (S150). When the strict solution can be estimated, the evaluation on an error and the reliability of the calculated solution are made possible by comparison of the strict solution with the calculated solution (S160). COPYRIGHT: (C)2004,JPO&NCIPI
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