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Research Papers

Heat and Mass Transfer for Ice Particle Ingestion Inside Aero-Engine

[+] Author and Article Information
Decang Lou

Department of Thermal Power and Propulsion, School of Engineering, Cranfield University, Bedfordshire MK43 0AL, UKldcang@ustc.edu

David W. Hammond

Department of Thermal Power and Propulsion, School of Engineering, Cranfield University, Bedfordshire MK43 0AL, UKd.w.hammond@cranfield.ac.uk

J. Turbomach 133(3), 031021 (Nov 29, 2010) (5 pages) doi:10.1115/1.4002419 History: Received November 30, 2009; Revised February 13, 2010; Published November 29, 2010; Online November 29, 2010

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.

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Copyright © 2011 by American Society of Mechanical Engineers
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Figures

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Figure 1

Ice crystal icing (4)

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Figure 2

Impact of ice particles on the surface of the components

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Figure 3

Ice particle change into water droplet and small particle (condition 1)

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Figure 4

Vapor and water film surrounded the ice particle (condition 2)

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Figure 5

Heat and mass transfer for the ice particle

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Figure 6

Ice particle size change in the compressor passage for bare model

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Figure 7

Difference in size change of the ice particle between the bare and water covered models

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