Wave analyzing apparatus and wave analyzing method

A wave analyzing apparatus for analyzing, when changing wave data of a specified discrete point within an analysis domain expressed by a plurality of discrete points, such a state that the changes thereof are propagated in the form of spatial and time variations of wave data of other discrete points, said apparatus comprising:

• dividing/managing means for dividing the analysis domain into a plurality of blocks and managing these blocks;
• main storage means for storing the wave data about the discrete points for one block among the plurality of blocks;
• auxiliary storage means for storing the wave data about the discrete points within the blocks the wave data of which are not stored in said main storage means;
• calculating means for calculating the wave data about the discrete points within one block after a fixed time has elapsed, the wave data being stored in said main storage means, and storing said main storage means with the wave data defined as a result of the calculation;
• and
• exchanging means for exchanging the one-block wave data with which said calculating means has stored said main storage means for one-block wave data to be calculated next, which are stored in said auxiliary storage means.

A wave analyzing method of analyzing, when changing wave data of a specified discrete point within an analysis domain expressed by a plurality of discrete points, such a state that the changes thereof are propagated in the form of spatial and time variations of wave data of other discrete points, said method comprising:

• a dividing step of dividing the analysis domain into a plurality of blocks;
• a determining step of determining whether or not magnitudes of the wave data about some pre-designated discrete points for determination that are contained in an interior of the block are all smaller than a predetermined value for every block divided in said dividing step;
• and
• an analyzing step of treating, with respect to the blocks in which the magnitudes of the wave data corresponding to the determination discrete points are determined to be smaller than the predetermined value in said determining step, the wave data about the respective discrete points within these blocks as wave data about the discrete points after the fixed time has elapsed, and calculating, with respect to the blocks exclusive of the above-mentioned blocks, the wave data about these discrete points after a fixed time has elapsed on the basis of the wave data about the respective discrete points within these blocks.

A wave analyzing method, used for an electronic computer including a main storage unit and an auxiliary storage unit, of analyzing, when changing wave data of a specified discrete point within an analysis domain expressed by a plurality of discrete points, such a state that the changes thereof are propagated in the form of spatial and time variations of wave data of other discrete points, said method comprising:

• a dividing step of dividing the analysis domain into a plurality of blocks;
• a writing step of writing the wave data about the discrete points for one block among the plurality of blocks to said main storage unit and writing the wave data about the discrete points within other blocks to said auxiliary storage unit;
• a calculating step of calculating the wave data about the discrete points within one block after a fixed time has elapsed, the wave data being stored in said main storage unit, and storing said main storage unit with the wave data defined as a result of the calculation;
• and
• an exchanging step of exchanging the one-block wave data stored in said main storage unit in said calculating step for one-block wave data to be calculated next, which are stored in said auxiliary storage unit.