Vortex dislocation in wake-type flow caused by local spanwise nonuniformity
文献类型：会议论文
| 作者 | Ling GC(凌国灿) ; Niu JY(牛家玉)
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| 出版日期 | 2004-11-22 |
| 会议名称 | The 6th International Conference on Hydrodynamics 22-24 November 2004 Perth, Western Australia |
| 通讯作者 | 凌国灿 |
| 中文摘要 | DNS of spatiotemporal evolution of a wake-type flow is performed. In the incoming flow, a local spanwise nonuniformity in momentum defect is initially imposed. Results show that the spanwise nonuniformity leads to a series of symmetric twist vortex dislocation in downstream of the flow. Vortex line variations and substantial transition of vorticity from spanwise to the streamwise and vertical directions clearly feature the generation of a vortex dislocation and the real vortex linking in the dislocation. Dynamical process and the mechanism responsible for the vortex dislocation are described.; DNS of spatiotemporal evolution of a wake-type flow is performed. In the incoming flow, a local spanwise nonuniformity in momentum defect is initially imposed. Results show that the spanwise nonuniformity leads to a series of symmetric twist vortex dislocation in downstream of the flow. Vortex line variations and substantial transition of vorticity from spanwise to the streamwise and vertical directions clearly feature the generation of a vortex dislocation and the real vortex linking in the dislocation. Dynamical process and the mechanism responsible for the vortex dislocation are described. |
| 会议录 | Hydrodynamics VI: Theory and Applications: Proceedings of the 6th International Conference on Hydrodynamics, Perth, Western Australia, 24-26 November 2004,p.
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| 学科主题 | 力学 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/13792]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 通讯作者 | Ling GC(凌国灿) |
| 推荐引用方式 GB/T 7714 | Ling GC,Niu JY. Vortex dislocation in wake-type flow caused by local spanwise nonuniformity[C]. 见:The 6th International Conference on Hydrodynamics 22-24 November 2004 Perth, Western Australia. |
入库方式： OAI收割
来源：力学研究所
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