| タイトル | Lagrangian and Eulerian statistics obtained from direct numerical simulations of homogeneous turbulence |
| 著者（英） | Squires, Kyle D.; Eaton, John K. |
| 著者所属（英） | Stanford Univ. |
| 発行日 | 1991-01-01 |
| 言語 | eng |
| 内容記述 | Direct numerical simulation is used to study dispersion in decaying isotropic turbulence and homogeneous shear flow. Both Lagrangian and Eulerian data are presented allowing direct comparison, but at fairly low Reynolds number. The quantities presented include properties of the dispersion tensor, isoprobability contours of particle displacement, Lagrangian and Eulerian velocity autocorrelations and time scale ratios, and the eddy diffusivity tensor. The Lagrangian time microscale is found to be consistently larger than the Eulerian microscale, presumably due to the advection of the small scales by the large scales in the Eulerian reference frame. |
| NASA分類 | FLUID MECHANICS AND HEAT TRANSFER |
| レポートNO | 91A20285 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/350882 |
|
