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A multiple-vortex-ring model of the DFW microburstA multiple-vortex-ring model of the winds associated with a microburst is verified by matching the model-generated winds to those encountered at the Dallas-Ft. Worth (DFW) microburst. The basis of the model consists of time-invariant vortex ring filaments embedded in irrotational flow. Each ring's viscous core is modeled by distributing the vorticity over a small distance (relative to the ring diameter) radially from the filaments. Parameters such as the size and strength of the vortex rings are identified using a modified Newton-Raphson technique. The parameters identified from the analysis of the DFW microburst encounter indicate a large ring with a radius of 8500 ft and a smaller ring with a radius of 1700 ft.
Document ID
19880035284
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Schultz, Thomas A.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Meteorology And Climatology
Report/Patent Number
AIAA PAPER 88-0685
Accession Number
88A22511
Distribution Limits
Public
Copyright
Other

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