TY - GEN
T1 - Multi-angle light scattering for investigating soot particle/aggregate parameters in a counterflow flame at elevated pressures
AU - Amin, Hafiz
AU - Roberts, William L.
N1 - KAUST Repository Item: Exported on 2020-12-30
Acknowledgements: The publication is based upon the work supported by King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award no. 1402.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - In this work, different morphological parameters of soot are investigated using multi-angle light scattering and extinction, at elevated pressures. N2-diluted ethylene/air counterflow diffusion flames are stabilized inside the pressure vessel at pressures up to 5 atm. The pressure vessel can provide optical access for multi-angle light scattering from 10 to 170 degrees. An Ar/Kr ion laser beam emitted at 514.5 nm wavelength is focused at the center of the flame and light scattered by soot particles is measured, at several angles between 25° to 165°, by light collection optics that are mounted on a rotary stage. A global strain rate of 30s-1 is maintained for all pressures by adjusting the inlet flow. The scattering measurements are analyzed using Rayleigh-Debye-Gans theory for polydisperse fractal aggregates and scattering to absorption ratio, soot volume fraction, mean particle diameter and aggregate size distribution are calculated through the 1-D flame as a function of pressure.
AB - In this work, different morphological parameters of soot are investigated using multi-angle light scattering and extinction, at elevated pressures. N2-diluted ethylene/air counterflow diffusion flames are stabilized inside the pressure vessel at pressures up to 5 atm. The pressure vessel can provide optical access for multi-angle light scattering from 10 to 170 degrees. An Ar/Kr ion laser beam emitted at 514.5 nm wavelength is focused at the center of the flame and light scattered by soot particles is measured, at several angles between 25° to 165°, by light collection optics that are mounted on a rotary stage. A global strain rate of 30s-1 is maintained for all pressures by adjusting the inlet flow. The scattering measurements are analyzed using Rayleigh-Debye-Gans theory for polydisperse fractal aggregates and scattering to absorption ratio, soot volume fraction, mean particle diameter and aggregate size distribution are calculated through the 1-D flame as a function of pressure.
UR - http://hdl.handle.net/10754/666742
UR - https://research.kaust.edu.sa/en/publications/multi-angle-light-scattering-for-investigating-soot-particleaggre
UR - http://www.scopus.com/inward/record.url?scp=85048885565&partnerID=8YFLogxK
M3 - Conference contribution
BT - 10th U.S. National Combustion Meeting
PB - Eastern States Section of the Combustion Institute
ER -