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Descripción
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| A new breakup criterion is proposed in this article for droplets that suffers the flow field generated by an incoming airfoil. This criterion is based on the study of the characteristic times involved in the problem, which are the characteristic flow field variation time and the characteristic droplet deformation time. An empirical correlation is given to determine the Weber number at the onset of the breakup for each flow field and droplet size. Experimental data on the droplet deformation and breakup tests conducted in a rotating arm facility was used for the correlation. Droplets, in the range of 0.3 to 3.6 mm of diameter, were allowed to fall in the path of an incoming airfoil attached to the end of a rotating arm. Airfoil velocities varied between 50 m/s and 90 m/s while its leading edge radius ranged from 0.030 to 0.103 m. The phenomenon was recorded by a high speed camera using shadowgraph illumination technique. The empirical correlation was obtained from droplets that breakup in the bag and stamen breakup mode. However the same correlation seems to be valid for droplets in the regime of shear breakup and for droplets in the regime of bag breakup. | |
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Internacional
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Si |
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Nombre congreso
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9th AIAA Atmospheric and Space Enviroments Conference, 2017 AIAA Aviation and Aeronautics Forum and Exposition |
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Tipo de participación
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960 |
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Lugar del congreso
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Denver, Colorado, EE UU |
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Revisores
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Si |
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ISBN o ISSN
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978-1-62410-496-1 |
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DOI
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https://doi.org/10.2514/6.2017-4479 |
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Fecha inicio congreso
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05/06/2017 |
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Fecha fin congreso
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09/06/2017 |
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Desde la página
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1 |
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Hasta la página
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15 |
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Título de las actas
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9th AIAA Atmospheric and Space Environments Conference, AIAA AVIATION Forum |