Wake vortex transport in proximity to the ground
- 8 November 2002
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE) in 19th DASC. 19th Digital Avionics Systems Conference. Proceedings (Cat. No.00CH37126)
- Vol. 1, 3E5/1-3E5/8vol.1
- https://doi.org/10.1109/dasc.2000.886942
Abstract
A sensitivity study for aircraft wake vortex transport has been conducted using a validated large eddy simulation (LES) model. The study assumes neutrally stratified and nonturbulent environments and includes the consequences of the ground. The numerical results show that the nondimensional lateral transport is primarily influenced by the magnitude of the ambient crosswind and is insensitive to aircraft type. In most of the simulations, the ground effect extends the lateral position of the downwind vortex about one initial vortex spacing (b/sub o/) in the downstream direction. Further extension by as much as one b/sub o/ occurs when the downwind vortex remains "in ground effect" (IGE) for relatively long periods of time. Results also show that a layer-averaged ambient wind velocity can be used to bound the time for lateral transport of wake vortices to ensure safe operations on a parallel runway.Keywords
This publication has 26 references indexed in Scilit:
- Measurements of Wake Vortices Interacting with the GroundJournal of Aircraft, 2005
- Three-dimensional instability of wake vortices near the groundPublished by American Institute of Aeronautics and Astronautics (AIAA) ,1997
- Behavior of Wake Vortices Near GroundAIAA Journal, 1997
- Decay characteristics of wake vortices from jet transport aircraftPublished by American Institute of Aeronautics and Astronautics (AIAA) ,1997
- Two dimensional wake vortex simulations in the atmosphere - Preliminary sensitivity studiesPublished by American Institute of Aeronautics and Astronautics (AIAA) ,1997
- Measurements of aircraft wake vortices at Memphis International Airport with a cw CO2 coherent laser radarPublished by SPIE-Intl Soc Optical Eng ,1996
- Study of aircraft wake vortex behavior near the groundAIAA Journal, 1996
- Trailing vortices in homogeneous and density-stratified mediaJournal of Fluid Mechanics, 1983
- Wake vortex decay near the groundPublished by American Institute of Aeronautics and Astronautics (AIAA) ,1975
- Stability theory for a pair of trailing vorticesAIAA Journal, 1970