Actions for Assessment of Microphysical Models in the National Combustion Code (NCC) for Aircraft Particulate Emissions : Particle Loss in Sampling Lines

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Assessment of Microphysical Models in the National Combustion Code (NCC) for Aircraft Particulate Emissions : Particle Loss in Sampling Lines

Author
Wey, Thomas
Published
October 2008.
Physical Description
1 electronic document
Additional Creators
Liu, Nan-Suey
Online Version

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Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
This 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.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 20090013279.
NASA/TM-2008-215304.
E-16575.
AIAA Paper-2009-0257.
47th AIAA Aerpspace Sciences Meeting (ASM); 5 - 8 Jan. 2009; Florida; United States.
Terms of Use and Reproduction
No Copyright.
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