Informing TiRe-LII assumptions of soot nanostructure and optical properties for estimation of soot primary particle diameter

Research output: Contribution to conferencePaper

Abstract

Time-resolved laser-induced incandescence for primary particle size determination is tested using three model carbon blacks. Optical properties change as does the nanostructure upon laser annealing whereas aggregate morphology and primary particle size remain equivalent to the original material, as shown by transmission electron microscopy (TEM). Primary particle diameters found from fitting experimentally measured time-resolved laser-induced incandescence (LII) signals with existing models do not match the particle diameters as directly visualized by TEM. The accommodation coefficient is shown to be a crucial parameter which can result in substantial variations in simulated conductive cooling profiles for particle sizing. Aggregate structure in the form of intra-Aggregate connectivity and shielding is an additional underlying cause for erroneous particle sizing, not presently captured by LII models.

Original languageEnglish (US)
StatePublished - Jan 1 2018
Event2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018 - State College, United States
Duration: Mar 4 2018Mar 7 2018

Other

Other2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018
CountryUnited States
CityState College
Period3/4/183/7/18

Fingerprint

incandescence
Soot
tires
soot
Tires
Nanostructures
Optical properties
optical properties
Lasers
lasers
sizing
Particle size
Size determination
Transmission electron microscopy
Carbon black
Shielding
size determination
accommodation coefficient
transmission electron microscopy
laser annealing

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Chemical Engineering(all)

Cite this

Singh, M., & Vander Wal, R. L. (2018). Informing TiRe-LII assumptions of soot nanostructure and optical properties for estimation of soot primary particle diameter. Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States.
Singh, Madhu ; Vander Wal, Randy Lee. / Informing TiRe-LII assumptions of soot nanostructure and optical properties for estimation of soot primary particle diameter. Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States.
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abstract = "Time-resolved laser-induced incandescence for primary particle size determination is tested using three model carbon blacks. Optical properties change as does the nanostructure upon laser annealing whereas aggregate morphology and primary particle size remain equivalent to the original material, as shown by transmission electron microscopy (TEM). Primary particle diameters found from fitting experimentally measured time-resolved laser-induced incandescence (LII) signals with existing models do not match the particle diameters as directly visualized by TEM. The accommodation coefficient is shown to be a crucial parameter which can result in substantial variations in simulated conductive cooling profiles for particle sizing. Aggregate structure in the form of intra-Aggregate connectivity and shielding is an additional underlying cause for erroneous particle sizing, not presently captured by LII models.",
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Singh, M & Vander Wal, RL 2018, 'Informing TiRe-LII assumptions of soot nanostructure and optical properties for estimation of soot primary particle diameter' Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States, 3/4/18 - 3/7/18, .

Informing TiRe-LII assumptions of soot nanostructure and optical properties for estimation of soot primary particle diameter. / Singh, Madhu; Vander Wal, Randy Lee.

2018. Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States.

Research output: Contribution to conferencePaper

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T1 - Informing TiRe-LII assumptions of soot nanostructure and optical properties for estimation of soot primary particle diameter

AU - Singh, Madhu

AU - Vander Wal, Randy Lee

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Time-resolved laser-induced incandescence for primary particle size determination is tested using three model carbon blacks. Optical properties change as does the nanostructure upon laser annealing whereas aggregate morphology and primary particle size remain equivalent to the original material, as shown by transmission electron microscopy (TEM). Primary particle diameters found from fitting experimentally measured time-resolved laser-induced incandescence (LII) signals with existing models do not match the particle diameters as directly visualized by TEM. The accommodation coefficient is shown to be a crucial parameter which can result in substantial variations in simulated conductive cooling profiles for particle sizing. Aggregate structure in the form of intra-Aggregate connectivity and shielding is an additional underlying cause for erroneous particle sizing, not presently captured by LII models.

AB - Time-resolved laser-induced incandescence for primary particle size determination is tested using three model carbon blacks. Optical properties change as does the nanostructure upon laser annealing whereas aggregate morphology and primary particle size remain equivalent to the original material, as shown by transmission electron microscopy (TEM). Primary particle diameters found from fitting experimentally measured time-resolved laser-induced incandescence (LII) signals with existing models do not match the particle diameters as directly visualized by TEM. The accommodation coefficient is shown to be a crucial parameter which can result in substantial variations in simulated conductive cooling profiles for particle sizing. Aggregate structure in the form of intra-Aggregate connectivity and shielding is an additional underlying cause for erroneous particle sizing, not presently captured by LII models.

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Singh M, Vander Wal RL. Informing TiRe-LII assumptions of soot nanostructure and optical properties for estimation of soot primary particle diameter. 2018. Paper presented at 2018 Spring Technical Meeting of the Eastern States Section of the Combustion Institute, ESSCI 2018, State College, United States.