Numerical Simulation of Ice Shedding from Rotating Components 2019-01-2003
A CFD simulation methodology is presented to evaluate the ice that accretes and sheds on rotating aircraft and engine components. The shedding detection is handled by an ice accretion and a stress analysis solver coupled together to periodically check for the propagation of crack fronts and possible detachment. A numerical approach for crack propagation that does not require changes in mesh topology is presented. The entire simulation, consisting of airflow, impingement, ice accretion and crack formation and propagation, requires only a single mesh. The ice accretion and stress modules are validated separately by comparison to published data. The analysis is extended to demonstrate potential shedding scenarios on three complex 3D geometries that are relevant to industry: a helicopter blade, an engine fan blade and a turboprop scimitar propeller blade. The largest shed fragment will be analyzed to determine the likelihood of FOD damage to neighboring aircraft or engine components.
Shezad Nilamdeen, Yue Zhang, Isik Ozcer, Guido S. Baruzzi
International Conference on Icing of Aircraft, Engines, and Structures