Information concerning droplets impinging on airfoils, including their drag coefficient that depends on the droplet shape is needed to feed computational codes used to simulate the ice accretion process on wing surfaces. A new model is presented to predict the droplet ratio of deformation for a given flow field. This model is based on the analogy of a distorted droplet and a damped spring-mass system. It differs from known TAB, Clark's and DDB models in some departing assumptions. Comparisons of the model results with experimental data in the stagnation line show excellent agreement.
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