CFD-Informed Rain Drop Impact Damage Predictions at Hypersonic Conditions
Riza Kaan Gonuleri, Manuel Viqueira-Moreira, Joshua R. Leigh, Ugur Can, Kyle Watson, Christoph Brehm, Ibrahim Güven
Abstract
View Video Presentation: https://doi.org/10.2514/6.2023-2024.vid In this study a peridynamics approach is used in combination with a higher-order computational fluid dynamics approach to predict deformation of a ductile metallic target due to water droplet impact. The computational fluid dynamics approach simulates the droplet-shock interaction and provides distorted shape of the droplet prior to impact. The droplet shape is converted to a peridynamic grid and the impact event is simulated. For the droplets, a peridynamic fluid material model in conjunction with equation of state is used. For the metallic target, a peridynamic Johnson-Cook material model is used. The crater depth predictions agree with a theoretical curve constructed based on an experimental study of droplet impact on the metallic target. The results demonstrate the effects of distorted geometry of droplets prior to impingement on the resulting deformations of the target surface.