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Results are presented from the application of the ICECREMO code to various geometries. ICECREMO is a 3D ice accretion model, based on a structured approach. It does not include a CFD solver and therefore may be used in combination with a range of CFD packages. The code consists of a Lagrangian particle tracking module, a splash and bounce module, a water film thickness and motion module, a heat transfer module, and a freezing module. This paper aims to show the ability of the ICECREMO code to accurately predict droplet catch and ice accretion on components where the flow is highly 3D. The use of 2D icing analysis is widespread and has been shown, in certain cases, to prove reliable. However, in situations where the flow is highly 3D, such as with instances of geometrical double curvature, a 3D icing analysis is not only desirable, but necessary.

Aircraft icing is a significant issue for aviation safety. In this paper, recent developments for calculating the trajectory of non-spherical particles are used to determine the trajectory and impingement of ice crystals in aircraft icing scenarios. Two models are used, each formulated from direct numerical simulations, to give the drag, lift and torque correlations for various shaped particles. Previously, within the range of Reynolds number permitted in this study, it was only possible to model the trajectory and full rotational progression of cylindrical particles. The work presented in this paper allows for analysis of a wider range of ice shapes that are commonly seen in icing conditions, capturing the dynamics and behaviours specific to ice crystals. Previous limitations relate to the in ability to account for particle rotation and the dependency of force correlations on the measure of particle sphericity - which are now overcome.