| 摘要 |
PROBLEM TO BE SOLVED: To obtain a physical quantity distribution estimating method by which the calculating time for a matrix equation can be remarkably shortened and the physical quantity distribution can be estimated at a high speed by converting a close matrix into a non-dense matrix in which many zero elements are included by a wavelet conversion processing and solving the matrix equation. SOLUTION: An imparted governing equation is converted into a boundary integral equation (ST2), the boundary integral equation is converted into a digitizing equation (ST3), the digitizing equation is converted into a matrix equation A.x=b (ST4), a wavelet conversion is performed for the obtained matrix equation A.x=b (ST4), the converted matrix equation At .xt =bt is approximately solved by substituting zero for the matrix element whose absolute value is threshold or below in the matrix At , (ST6) approximate physical quantity distribution x* is determined by performing a wavelet inverse conversion for the approximate solution xt (ST7) and the correction of the approximate physical quantity distribution x* is performed by the repeated calculation (ST8). |
