Ice accretion and ice shedding on an aero-engine rotating cone

Ice accretion on the aero-engine rotating cone surface significantly increases intake distortion, potentially leading to engine stall and surge. In addition, the ice accretion from the surface of the rotating cone may cause the mechanical damage of the engine; hence, it is of great significance to study the ice accretion and ice shedding on the surface of an aero-engine rotating cone. In this study, an aero-engine rotating cone model based on three-dimensional solid modeling is established to numerically simulate the ice accretion on the rotating cone surface, and the bilinear cohesion zone model is used to analyze the ice shedding. The influence of different rotation speeds on the ice accretion and ice shedding of the rotating cone at the mainstream temperature of 253.15 K is analyzed. The results show that with the increase in the rotating cone speed, the rotating cone surface pressure is decreased, and the temperature gradient is enhanced clearly. The water drop collection coefficient and the ice accretion thickness are increased obviously and the range is enlarged slightly. The downstream of the ice accretion is prone to ice shedding.