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SUMMARY:Morphology and optical properties of flame-made nanoparticles - Ge
 orgios A. Kelesidis\, ETH Zürich
DTSTART:20190524T103000Z
DTEND:20190524T113000Z
UID:TALK125308@talks.cam.ac.uk
CONTACT:Savvas Gkantonas
DESCRIPTION:There is renewed interest in understanding the detailed struct
 ure and optical properties of soot because it is the second largest contri
 butor (after CO2) to radiative forcing. In addition\, the soot contributio
 n exhibits by far the largest uncertainty of them. Furthermore\, such unde
 rstanding continues to be sought for accurate monitoring of soot emissions
 \, carbon black synthesis and fire detection. Here\, this understanding is
  advanced by discrete element modeling (DEM) of soot surface growth\, aggl
 omeration and oxidation along with rigorous comparison to experimental dat
 a at various combustion conditions from different laboratories. The DEM-de
 rived agglomerates are coupled with the discrete dipole approximation (DDA
 ) to account for soot morphology and maturity revealing the evolution of i
 ts light absorption and scattering during combustion in premixed flames. T
 he DEM-DDA can be readily used for optimizing the selectivity of fire dete
 ctors and advancing soot optical diagnostics\, as well as for a more accur
 ate estimation of the climate impact of soot.
LOCATION:Hopkinson Meeting Room\, Engineering Department
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