SLD Lagrangian modeling and capability assessment in the frame of ONERA 3D icing suite

Abstract

On the basis of an existing model for spray wall interactions, a SLD model has been implemented in the Lagrangian solver of the 3D icing suite developed by ONERA. This new model has been validated against some test cases issued from the NASA SLD experimental database. The aim of this paper is to present the current status of this ongoing research activity. Nomenclature d : Droplet Diameter (m) t : Time (s) τbup : Droplet break-up time (s) τp : Droplet dynamical response time (s) r : Droplet radius (m) m : Mass (kg) hR : Roughness height (m) hf : Liquid film thickness (m) v : Velocity (m.s -1 ) u : Velocity (m.s -1 ) g : Gravity acceleration (m.s -2 ) x : Space coordinates or droplet position (m) nW : Normal to the wall unit vector n : Normal unit vector ρ : Density (kg.m-3) μ : Dynamic Viscosity (kg.m -1 .s -1