Ice Shedding Phenomena for Axial Compressor Blade in Icing Conditions

Icing is a phenomenon where supercooled water droplets or ice particles impact a cold surface in low-temperature environments, forming an ice layer. This complex process is influenced by various factors including the droplet impact surface, atmospheric pressure, temperature, cloud water content (LWC), and median volume diameter (MVD) of supercooled water droplets. Icing is a known issue for aircraft, wind turbines, power lines, and gas turbine intake equipment.In gas turbines, ice accumulates on internal components like axial compressor blades, altering their shape and reducing operating efficiency. This ice can detach due to airflow, vibration, or temperature increases. Large detached ice masses pose a significant risk, potentially causing severe damage to downstream structures. This study aims to elucidate compressor blade icing by conducting experiments in a low-temperature wind tunnel, focusing on ice layer formation from supercooled droplet impact on a single NACA65-type blade. A key aspect of the research is investigating ice detachment. Specifically, the study targets ice detachment from compressor blades under low-temperature conditions, at -10°C, as adhesive failure at lower temperatures could lead to larger, more dangerous ice detachments.