Simulation of Supercooled Large Droplet Impingement via Reduced Order Technology

The computational cost of viscous turbulent aeroicing simulations is a limitation that needs to be addressed more extensively using computational fluid dynamics (CFD) for aircraft in-flight icing certification. To overcome this computational burden, a reduced-order modeling (ROM) approach, based on proper orthogonal decomposition and kriging interpolation techniques, is applied to the computation of the water impact pattern of supercooled large droplets on aircraft. Relying on an appropriate database of high-fidelity, full-order simulations, the ROM approach provides an accurate lower-order approximation of the system in terms of a linear combination of appropriate functions. The resulting surrogate solution is successfully compared with experimental and CFD results for two-dimensional and three-dimensional cases, including a complete aircraft case. [PUBLICATION ABSTRACT]