Eulerian Modeling of In-Flight Icing Due to Supercooled Large Droplets

To accurately simulate the impingement behavior and associated icing potential of supercooled large droplets, droplet-wall interactions including splashing and bouncing phenomena must be accounted for in the governing Eulerian model. Because of current limitations in computational capacity, an industrially viable simulation is necessarily based on a semi-empirical description of the droplet-wall interaction process. Because empirical correlations are inherently Lagrangian in nature, the associated information must be transformed from a Lagrangian to an Eulerian frame of reference. A detailed derivation of an Eulerian model of the droplet-wall interaction process is presented, along with a comparison of numerical and experimental collection efficiency distributions demonstrating the model's current simulation capabilities.