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仪器网/ 行业应用/ 解决方案/ 和过冷大液滴(SLD)导致航天器结冰现象相关的强空气动力

和过冷大液滴(SLD)导致航天器结冰现象相关的强空气动力

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The distortion, drag and break-up of drizzle droplets subjected to strong aerodynamic
forces was investigated to understand the pre-impact behaviour of droplets in aircraft
icing from supercooled freezing drizzle. The objective was to obtain a formulation and
data for the drag properties of droplets distorted by the aerodynamic forces, which were
beyond the scope of available experimental and model领 methods.
A practical and efficient semi-empirical computer model was developed for small water
droplets in air, 100m < D < 500m, at moderate Reynolds numbers, 350 < Re < 1500,
and high Weber numbers 3 < We < 20. This used available experimental terminal velocity
data for free-fal领 droplets, extrapolated to higher Weber numbers, and the numerical
solution for sessile droplets on a horizontal unwettable surface, with corrections for
the Reynolds number. 德国LaVision PIV/PLIF粒子成像测速场仪
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