| 摘要 |
PURPOSE: A calculation area-changeable tsunami numerical simulation method is provided to improve the accuracy of numerical simulation without the excessive encroachment of computer processing capacity and to reduce time for numerical simulation. CONSTITUTION: An initial physical amount including the depth of water is set(S11). The depth of water of a target grid point is obtained by calculating a difference formula(S20). When the calculated depth exceeds 0, the target grid point is moved in a forward direction(S31). When the calculated depth is lower than 0, calculation time is updated, and the target grid point is returned to an original point(S50a). [Reference numerals] (AA) Start; (BB) Water depth of a calculation grid point > 0; (CC) Calculation time = Finish time; (DD) End; (S11) Set an initial value of each grid point; (S20) Obtain the volume flux and water depth of the calculation grid point by calculating a difference formula; (S31) Move the calculation grid point forward; (S50a) Update the calculation time and return the grid point to an original point |
