Abstract
Aircraft icing is the phenomenon that forms an ice layer on the solid surface by impingement of supercooled water droplets in the atmosphere. In icing on rotor blades, ice is shed from the blade surface by centrifugal force as the accumulated ice grows. Therefore, it’s necessary to establish an ice shedding model for icing simulations. In this study, the authors proposed an ice shedding model in which the condition for ice shedding is that the centrifugal force exceeds both the adhesion strength and the tensile strength. A numerical analysis was performed to validate the model, and the ice shedding conditions were investigated through comparison with the experimental results. The progress of icing on the rotor blade was predicted by UPACS. We simulated the change of centrifugal, adhesion, and tensile force over time in the icing process. The results showed that the present model is able to predict both the shedding timing and location with reasonable accuracy.
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