| 摘要 |
PROBLEM TO BE SOLVED: To calculate an electromagnetic wave speedily by judging whether all values of an electrical conductivity set to each discrete lattice in an analysis space are 0 or not and abbreviating an arrangement CZ (I, J) in the calculation of an electric field and calculating an electric field and a magnetic field. SOLUTION: A processing device 1 performs various kinds of processing according to a program and a material judging means 2 judges whether the values of electrical conductivity set to each discrete lattice in a space to be analyzed are 0 or can be regarded as 0 in all discrete lattices or not. An electromagnetic field calculation means 3 calculates an electric field and a magnetic field in each discrete lattice in the space and abbreviates an arrangement CZ (I, J) in calculation and calculates the electric field and the magnetic field when a material judgment means 20 judges them to be 0. The calculation means 3 performs calculation including the arrangement CZ (I, J) in calculation when the judgment means 20 judges them not to be 0. The value of electrical conductivity set to each discrete lattice in the space to be analyzed is 0 or can be regarded as 0 in all discrete lattices in many cases, thus reducing the capacity of the main storage 4 and calculating electromagnetic waves speedily. |
