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Numerical study of a long-lived, isolated wake vortex in ground effect
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Proctor, Fred H. |
| Copyright Year | 2014 |
| Description | 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. |
| File Size | 1300054 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140011455 |
| Archival Resource Key | ark:/13960/t2z36tc7k |
| Language | English |
| Publisher Date | 2014-06-16 |
| Access Restriction | Open |
| Subject Keyword | Air Transportation And Safety Wind Direction Large Eddy Simulation Computational Fluid Dynamics Vortices Predictions Derivation Aircraft Wakes Mathematical Models Ground Effect Aerodynamics Decay Rates Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
