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A simple, analytical, axisymmetric microburst model for downdraft estimationA simple analytical microburst model was developed for use in estimating vertical winds from horizontal wind measurements. It is an axisymmetric, steady state model that uses shaping functions to satisfy the mass continuity equation and simulate boundary layer effects. The model is defined through four model variables: the radius and altitude of the maximum horizontal wind, a shaping function variable, and a scale factor. The model closely agrees with a high fidelity analytical model and measured data, particularily in the radial direction and at lower altitudes. At higher altitudes, the model tends to overestimate the wind magnitude relative to the measured data.
Document ID
19910011819
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Vicroy, Dan D. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1991
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
NASA-TM-104053
NAS 1.15:104053
Accession Number
91N21132
Funding Number(s)
PROJECT: RTOP 505-64-12
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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