Phase change heat transfer characteristic of ice crystal ingested into turbofan engine

Through analysis of airflow parameters in low pressure compressor flow passage, and by discretization of the motion equation and phase change heat and mass transfer equation of ice crystal, the ice crystal radii, ice crystal temperature, ice crystal velocity, liquid water mass fraction of ice-water mixture, heat transfer coefficient and mass transfer coefficient between ice crystal surface and airflow in low pressure compressor along axial position of compressor were calculated. The trajectory of ice crystal in low pressure compressor and collision characteristics between ice crystal and blades were obtained. The result shows that the liquid water mass fraction of 20μm ice crystal at adhesion position is 10.22% while liquid water mass fraction of 100μm ice crystal at the compressor outlet is just 2.1% and there will be no ice accretion inside the compressor.