| タイトル | On the application of pseudo-spectral FFT technique to non-periodic problems |
| 著者（英） | Kao, K. H.; Biringen, S. |
| 著者所属（英） | Colorado Univ. |
| 発行日 | 1988-01-01 |
| 言語 | eng |
| 内容記述 | The reduction-to-periodicity method using the pseudo-spectral Fast Fourier Transform (FFT) technique is applied to the solution of nonperiodic problems including the two-dimensional Navier-Stokes equations. The accuracy of the method is demonstrated by calculating derivatives of given functions, one- and two-dimensional convective-diffusive problems, and by comparing the relative errors due to the FFT method with seocnd order Finite Difference Methods (FDM). Finally, the two-dimensional Navier-Stokes equations are solved by a fractional step procedure using both the FFT and the FDM methods for the driven cavity flow and the backward facing step problems. Comparisons of these solutions provide a realistic assessment of the FFT method indicating its range of applicability. |
| NASA分類 | FLUID MECHANICS AND HEAT TRANSFER |
| レポートNO | 88A22307
AIAA PAPER 88-0415 |
| 権利 | Copyright |
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