Assessment of scavenge efficiency for a helicopter particle separation system

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Proceedings titleASME 2011 Turbo Expo: Turbine Technical Conference and Exposition: Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Wind Turbine Technology
ConferenceASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011, June 6-10, 2011, Vancouver, BC, Canada
Pages101109; # of pages: 9
SubjectEngine operating conditions; Engine particles; Flow characteristic; Inlet velocity; Large particles; Mass distribution; Operating condition; Particle separation; Particle trajectories; Shape factor; Small particles; Aircraft engines; Alternative fuels; Efficiency; Exhibitions; Gravitation; Helicopters; Particle separators
AbstractThe effectiveness of a typical helicopter particle separation system has been numerically assessed at practical operating conditions and sand environments for various scenarios. The particle separation mechanism and its limitation are revealed by the flow characteristics and particle trajectories in the flow-field. The separation-by-inertia concept is effective for removing large particles, but problematic for small particles of diameter (d) ≤ 36μm. The particle size, shape factor, and rebound characteristics exert substantial effects on particle scavenge efficiency. On the other hand, the effects of gravity, particle inlet velocity, inlet mass distribution, and engine operating conditions on scavenge efficiency are minor or limited for the configurations and operating conditions considered in the present study. In addition, a few suggestions for further investigation on engine particle separation systems are included. Copyright © 2011 by Her Majesty the Queen in Right of Canada. Copyright © 2011 by ASME.
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AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Aerospace Research
Peer reviewedYes
NPARC number21271902
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Record identifierfc70762f-16da-40ba-b233-01aa4497b514
Record created2014-05-05
Record modified2016-05-09
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