Ice crystal icing has been found to be the prime culprit for aero-engine internal icing. Internal icing and the following ice shedding may cause the engine power loss, flame-out, and even damage to the compressor components. In this paper, the ice particle ingestion process and the interaction between the particles and components are discussed. Heat and mass transfer models are built for two ideal conditions. Results from a case study reveal that the melting rate for the ice particle covering with water film is much higher than that for bare particles. Those ice particles with a size beyond a critical diameter cannot be melted completely before entering into the combustor. The study can provide further consideration of the mechanism of engine “flame-out” and component impact damage.

Issue Section:
Research Papers
Keywords:
aerospace engines, freezing, heat transfer, ice, mass transfer, ice crystal, internal icing, power loss, ice particle ingestion
Topics:
Ice, Particulate matter, Water, Heat, Mass transfer
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