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Impingement of Water Droplets on an Ellipsoid with Fineness Ratio 5 in Axisymmetric FlowThe presence of radomes and instruments that are sensitive to water films or ice formations in the nose section of all-weather aircraft and missiles necessitates a knowledge of the droplet impingement characteristics of bodies of revolution. Because it is possible to approximate many of these bodies with an ellipsoid of revolution, droplet trajectories about an ellipsoid of revolution with a fineness ratio of 5 were computed for incompressible axisymmetric air flow. From the computed droplet trajectories, the following impingement characteristics of the ellipsoid surface were obtained and are presented in terms of dimensionless parameters: (1) total rate of water impingement, (2) extent of droplet impingement zone, (3) distribution of impinging water, and (4) local rate of water impingement.
Document ID
19810068689
Acquisition Source
Legacy CDMS
Document Type
Other - NACA Technical Note
Authors
Dorsch, Robert G. (National Advisory Committee for Aeronautics. Lewis Flight Propulsion Lab. Cleveland, OH, United States)
Brun, Rinaldo J. (National Advisory Committee for Aeronautics. Lewis Flight Propulsion Lab. Cleveland, OH, United States)
Gregg, John L. (National Advisory Committee for Aeronautics. Lewis Flight Propulsion Lab. Cleveland, OH, United States)
Date Acquired
August 11, 2013
Publication Date
March 1, 1954
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NACA-TN-3099
Accession Number
81N73111
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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