抄録
Sand erosion is a phenomenon whereby solid particles impinging on a wall cause serious mechanical damage to the wall surface. Aircraft engines operating in a particulate environment are subjected to the performance and lifetime deterioration due to sand erosion. Especially, the fan blades of the aircraft engines are severely damaged. There are some researches for sand erosion of fan, compressor and turbine. However, there are no researches for fan erosion with nose cone. In the present study, we apply our three dimensional sand erosion prediction code to an axial fan with a nose cone. We numerically investigate the change of the flow field, the particle trajectories, and the eroded wall shape, to clarify the effects of nose cone shape on sand erosion.
