NDLI: 3d visualization of unsteady 2d airplane wake vortices

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3d visualization of unsteady 2d airplane wake vortices

Content Provider	NASA Technical Reports Server (NTRS)
Author	Ma, Kwan-Liu Zheng, Z. C.
Copyright Year	1994
Description	Air flowing around the wing tips of an airplane forms horizontal tornado-like vortices that can be dangerous to following aircraft. The dynamics of such vortices, including ground and atmospheric effects, can be predicted by numerical simulation, allowing the safety and capacity of airports to be improved. In this paper, we introduce three-dimensional techniques for visualizing time-dependent, two-dimensional wake vortex computations, and the hazard strength of such vortices near the ground. We describe a vortex core tracing algorithm and a local tiling method to visualize the vortex evolution. The tiling method converts time-dependent, two-dimensional vortex cores into three-dimensional vortex tubes. Finally, a novel approach calculates the induced rolling moment on the following airplane at each grid point within a region near the vortex tubes and thus allows three-dimensional visualization of the hazard strength of the vortices. We also suggest ways of combining multiple visualization methods to present more information simultaneously.
File Size	1409758
Page Count	22
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19950005180
Archival Resource Key	ark:/13960/t3wt3m81m
Language	English
Publisher Date	1994-06-01
Access Restriction	Open
Subject Keyword	Computer Programming And Software Hilsch Tubes Wing Tip Vortices Aircraft Wakes Numerical Flow Visualization Unsteady Flow Computational Grids Ground Effect Aerodynamics Flight Hazards Two Dimensional Flow Rolling Moments Aircraft Hazards Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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