| タイトル | Cross-linking of two antiparallel vortex tubes |
| 著者（英） | Hussain, F.; Melander, M. V. |
| 著者所属（英） | NASA Ames Research Center|Stanford Joint Inst. for Surface and Microstructural Research |
| 発行日 | 1989-04-01 |
| 言語 | eng |
| 内容記述 | The detailed mechanisms in vortex cross-linking are unveiled by adequately resolved, direct numerical simulation of two viscous vortex tubes. There are three characteristic phases: (1) inviscid induction followed by core flattening and stretching; (2) bridging of the two vortices by accumulation of annihilated and then cross-linked vortex lines; and (3) threading of the remnants of the initial vortex pair in between the two bridges as they pull apart. These phases and the role of threading (along with bridging) in the mixing and the enstrophy cascade are explained, and it is shown that the mechanism is insensitive to asymmetries. |
| NASA分類 | FLUID MECHANICS AND HEAT TRANSFER |
| レポートNO | 89A34454 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/364102 |
