Nano-Alumina Accommodation Coefficient Measurement Using Time-Resolved Laser-Induced Incandescence

Research output: Contribution to journalArticle

Abstract

It has recently been suggested that the accommodation coefficient of nano-aluminum/alumina particles may be significantly smaller than previously assumed. This result has significant implications on the heat transfer and performance of the nanoparticles in combustion environments. Currently, the accommodation coefficient has been deduced only after assuming a combustion model for the nano-aluminum particle and changing the accommodation coefficient to fit experimental temperature data. Direct measurement is needed in order to decouple the accommodation coefficient from the assumed combustion mechanism. Time-resolved laser-induced incandescence (TiRe-LII) measurements were performed to measure the accommodation coefficient of nano-alumina particles in various gaseous environments. The accommodation coefficient was found to be 0.03, 0.07, and 0.15 in helium, nitrogen, and argon, respectively, at 300K and 2 atm in each environment. These values represent upper limits for the accommodation coefficient as it is expected to decrease with increasing ambient temperature. The values are similar to what has been seen for other metallic nanoparticles and significantly smaller than values used in soot measurements. The results will allow for additional modeling of the accommodation coefficient extended to other environments and support previous measurements of high combustion temperatures during nano-aluminum combustion.

Original languageEnglish (US)
Article number112401
JournalJournal of Heat Transfer
Volume138
Issue number11
DOIs
StatePublished - Nov 1 2016

Fingerprint

incandescence
accommodation coefficient
Aluminum Oxide
Time measurement
Alumina
aluminum oxides
time measurement
Aluminum
Lasers
lasers
Nanoparticles
Soot
aluminum
Helium
Argon
Temperature
combustion temperature
Nitrogen
nanoparticles
Heat transfer

Keywords

  • aluminum combustion
  • heat transfer
  • laser-induced incandescence
  • nanoparticle

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Nano-Alumina Accommodation Coefficient Measurement Using Time-Resolved Laser-Induced Incandescence. / Allen, David; Krier, Herman; Glumac, Nick G.

In: Journal of Heat Transfer, Vol. 138, No. 11, 112401, 01.11.2016.

Research output: Contribution to journalArticle

@article{9dff2916028b4eac89d93ed7951c8e56,
title = "Nano-Alumina Accommodation Coefficient Measurement Using Time-Resolved Laser-Induced Incandescence",
abstract = "It has recently been suggested that the accommodation coefficient of nano-aluminum/alumina particles may be significantly smaller than previously assumed. This result has significant implications on the heat transfer and performance of the nanoparticles in combustion environments. Currently, the accommodation coefficient has been deduced only after assuming a combustion model for the nano-aluminum particle and changing the accommodation coefficient to fit experimental temperature data. Direct measurement is needed in order to decouple the accommodation coefficient from the assumed combustion mechanism. Time-resolved laser-induced incandescence (TiRe-LII) measurements were performed to measure the accommodation coefficient of nano-alumina particles in various gaseous environments. The accommodation coefficient was found to be 0.03, 0.07, and 0.15 in helium, nitrogen, and argon, respectively, at 300K and 2 atm in each environment. These values represent upper limits for the accommodation coefficient as it is expected to decrease with increasing ambient temperature. The values are similar to what has been seen for other metallic nanoparticles and significantly smaller than values used in soot measurements. The results will allow for additional modeling of the accommodation coefficient extended to other environments and support previous measurements of high combustion temperatures during nano-aluminum combustion.",
keywords = "aluminum combustion, heat transfer, laser-induced incandescence, nanoparticle",
author = "David Allen and Herman Krier and Glumac, {Nick G}",
year = "2016",
month = "11",
day = "1",
doi = "10.1115/1.4033642",
language = "English (US)",
volume = "138",
journal = "Journal of Heat Transfer",
issn = "0022-1481",
publisher = "American Society of Mechanical Engineers(ASME)",
number = "11",

}

TY - JOUR

T1 - Nano-Alumina Accommodation Coefficient Measurement Using Time-Resolved Laser-Induced Incandescence

AU - Allen, David

AU - Krier, Herman

AU - Glumac, Nick G

PY - 2016/11/1

Y1 - 2016/11/1

N2 - It has recently been suggested that the accommodation coefficient of nano-aluminum/alumina particles may be significantly smaller than previously assumed. This result has significant implications on the heat transfer and performance of the nanoparticles in combustion environments. Currently, the accommodation coefficient has been deduced only after assuming a combustion model for the nano-aluminum particle and changing the accommodation coefficient to fit experimental temperature data. Direct measurement is needed in order to decouple the accommodation coefficient from the assumed combustion mechanism. Time-resolved laser-induced incandescence (TiRe-LII) measurements were performed to measure the accommodation coefficient of nano-alumina particles in various gaseous environments. The accommodation coefficient was found to be 0.03, 0.07, and 0.15 in helium, nitrogen, and argon, respectively, at 300K and 2 atm in each environment. These values represent upper limits for the accommodation coefficient as it is expected to decrease with increasing ambient temperature. The values are similar to what has been seen for other metallic nanoparticles and significantly smaller than values used in soot measurements. The results will allow for additional modeling of the accommodation coefficient extended to other environments and support previous measurements of high combustion temperatures during nano-aluminum combustion.

AB - It has recently been suggested that the accommodation coefficient of nano-aluminum/alumina particles may be significantly smaller than previously assumed. This result has significant implications on the heat transfer and performance of the nanoparticles in combustion environments. Currently, the accommodation coefficient has been deduced only after assuming a combustion model for the nano-aluminum particle and changing the accommodation coefficient to fit experimental temperature data. Direct measurement is needed in order to decouple the accommodation coefficient from the assumed combustion mechanism. Time-resolved laser-induced incandescence (TiRe-LII) measurements were performed to measure the accommodation coefficient of nano-alumina particles in various gaseous environments. The accommodation coefficient was found to be 0.03, 0.07, and 0.15 in helium, nitrogen, and argon, respectively, at 300K and 2 atm in each environment. These values represent upper limits for the accommodation coefficient as it is expected to decrease with increasing ambient temperature. The values are similar to what has been seen for other metallic nanoparticles and significantly smaller than values used in soot measurements. The results will allow for additional modeling of the accommodation coefficient extended to other environments and support previous measurements of high combustion temperatures during nano-aluminum combustion.

KW - aluminum combustion

KW - heat transfer

KW - laser-induced incandescence

KW - nanoparticle

UR - http://www.scopus.com/inward/record.url?scp=84979246402&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84979246402&partnerID=8YFLogxK

U2 - 10.1115/1.4033642

DO - 10.1115/1.4033642

M3 - Article

AN - SCOPUS:84979246402

VL - 138

JO - Journal of Heat Transfer

JF - Journal of Heat Transfer

SN - 0022-1481

IS - 11

M1 - 112401

ER -