Developments of Three-Dimensional Multi-Step Capabilities of the PoliMIce Ice Accretion Toolkit Within the ICE-GENESIS Project

This paper presents the recent developments of the PoliMIce ice accretion toolkit to compute robust multi-step simulations. The focus is on the development of an automatic, level-set-based approach to model three-dimensional boundary problems and generate a new conformal bodyfitted mesh. The level-set function is defined across the computational volume by comparing the position of the generic volume node with respect to the Lagrangian deformed geometry. This method avoids mesh entanglements and grid intersections typical of mesh deformation techniques, making it suitable for generating a body-fitted discretization of arbitrarily complex geometries as in-flight ice shapes. Multi-step numerical simulations over a NACA0012 swept wing, both in rime and glaze conditions, are presented and compared with the experimentally measured ice shapes from the 1st AIAA Ice Prediction Workshop.