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Assessment of Microphysical Models in the National Combustion Code (NCC) for Aircraft Particulate Emissions: Particle Loss in Sampling LinesThis paper at first describes the fluid network approach recently implemented into the National Combustion Code (NCC) for the simulation of transport of aerosols (volatile particles and soot) in the particulate sampling systems. This network-based approach complements the other two approaches already in the NCC, namely, the lower-order temporal approach and the CFD-based approach. The accuracy and the computational costs of these three approaches are then investigated in terms of their application to the prediction of particle losses through sample transmission and distribution lines. Their predictive capabilities are assessed by comparing the computed results with the experimental data. The present work will help establish standard methodologies for measuring the size and concentration of particles in high-temperature, high-velocity jet engine exhaust. Furthermore, the present work also represents the first step of a long term effort of validating physics-based tools for the prediction of aircraft particulate emissions.
Document ID
20090013279
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Wey, Thomas (NASA Glenn Research Center Cleveland, OH, United States)
Liu, Nan-Suey (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 24, 2013
Publication Date
October 1, 2008
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NASA/TM-2008-215304
AIAA Paper-2009-0257
E-16575
Meeting Information
Meeting: 47th AIAA Aerpspace Sciences Meeting (ASM)
Location: Florida
Country: United States
Start Date: January 5, 2009
End Date: January 8, 2009
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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