原文传递
Numerical Study of a Long-Lived, Isolated Wake Vortex in Ground Effect.
| 题名： | Numerical Study of a Long-Lived, Isolated Wake Vortex in Ground Effect. |
| 作者： | Proctor, F. H. |
| 关键词： | Aircraft Wakes; Computational Fluid Dynamics; Decay Rates; Derivation; Ground Effect(aerodynamics); Large Eddy Simulation; Mathematical Models; Predictions; Vortices; Wind Direction |
| 摘要： | This paper examines a case observed during the 1990 Idaho Falls Test program, in which a wake vortex having an unusually long lifetime was observed while in ground effect. A numerical simulation is performed with a Large Eddy Simulation model to understand the response of the environment in affecting this event. In the simulation, it was found that one of the vortices decayed quickly, with the remaining vortex persisting beyond the time-bound of typical vortex lifetimes. This unusual behavior was found to be related to the first and second vertical derivatives of the ambient crosswind. |
| 报告类型： | 科技报告 |
相关文献
- Numerical Study of a Long-Lived, Isolated Wake Vortex in Ground Effect
- A Critical Review of the Transport and Decay of Wake Vortices in Ground Effect
- Design and Construction of PCC Pavements, Volume 2. Design Features and Practices That Influence Performance of Pavements; Final rept. 1994-98
- Aircraft Wake Vortex Takeoff Tests at O'Hara International Airport.
- Numerical modeling studies of wake vortex transport and evolution within the planetary boundary layer
- Climatology at Dallas/Ft.Worth (DFW) Airport: Implications for a Departure Wake Vortex Spacing System; Project rept
检索历史
应用推荐
