FENSAP-ICE: Eulerian Modeling of Droplet Impingement in the SLD Regime of Aircraft Icing

Abstract

In order to accurately simulate the impingement behaviour and associated icing potential of super -cooled large droplets, droplet -wall interactions including splashing and bouncing phenomena must be accounted for in the governing Eulerian m odel. Due to current limitations in computational capacity, an industrially viable simulation is necessarily based on a semi -empirical description of the droplet -wall interaction process. Since 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 colle ction efficiency distributions demonstrating the model’s current simulation capabilities.