Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Transient AlH distribution around a burning micron-sized Al droplet quantified by laser absorption imaging

Wu, Zhiyong LU orcid ; Wang, Weitian LU ; Berrocal, Edouard LU ; Aldén, Marcus LU and Li, Zhongshan LU (2026) In Combustion and Flame 286.
Abstract
This study presents the first direct measurement of aluminum monohydride (AlH) distribution and dynamics during aluminum combustion. Single micron-sized aluminum droplets were burned in a controlled H₂O/N₂/O₂ environment to ensure repeatable conditions. A dual-wavelength laser absorption imaging system is used to quantify the AlH concentration with high temporal and spatial resolution. The results show that AlH concen­tration peaks near the droplet surface and decreases from about 1.2% to a negligible level within the conden­sation layer. As combustion proceeds, AlH extends outward from the droplet surface, and its distribution area stabilizes approximately 12 ms after ignition. This work demonstrates a robust technique for AlH... (More)
This study presents the first direct measurement of aluminum monohydride (AlH) distribution and dynamics during aluminum combustion. Single micron-sized aluminum droplets were burned in a controlled H₂O/N₂/O₂ environment to ensure repeatable conditions. A dual-wavelength laser absorption imaging system is used to quantify the AlH concentration with high temporal and spatial resolution. The results show that AlH concen­tration peaks near the droplet surface and decreases from about 1.2% to a negligible level within the conden­sation layer. As combustion proceeds, AlH extends outward from the droplet surface, and its distribution area stabilizes approximately 12 ms after ignition. This work demonstrates a robust technique for AlH quantification and provides novel data which is critical to understand the aluminum combustion mechanism. (Less)
Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Aluminum combustion, AlH concentration, Laser absorption spectroscopy, Spatiotemporal quantification
in
Combustion and Flame
volume
286
article number
114789
pages
4 pages
publisher
Elsevier
ISSN
0010-2180
language
English
LU publication?
yes
id
72ada14b-37a7-499f-85d0-098baaa25b0f
alternative location
https://www.sciencedirect.com/science/article/pii/S001021802600026X?via%3Dihub
date added to LUP
2026-01-22 10:14:49
date last changed
2026-01-23 08:27:08
@article{72ada14b-37a7-499f-85d0-098baaa25b0f,
  abstract     = {{This study presents the first direct measurement of aluminum monohydride (AlH) distribution and dynamics during aluminum combustion. Single micron-sized aluminum droplets were burned in a controlled H₂O/N₂/O₂ environment to ensure repeatable conditions. A dual-wavelength laser absorption imaging system is used to quantify the AlH concentration with high temporal and spatial resolution. The results show that AlH concen­tration peaks near the droplet surface and decreases from about 1.2% to a negligible level within the conden­sation layer. As combustion proceeds, AlH extends outward from the droplet surface, and its distribution area stabilizes approximately 12 ms after ignition. This work demonstrates a robust technique for AlH quantification and provides novel data which is critical to understand the aluminum combustion mechanism.}},
  author       = {{Wu, Zhiyong and Wang, Weitian and Berrocal, Edouard and Aldén, Marcus and Li, Zhongshan}},
  issn         = {{0010-2180}},
  keywords     = {{Aluminum combustion; AlH concentration; Laser absorption spectroscopy; Spatiotemporal quantification}},
  language     = {{eng}},
  month        = {{01}},
  publisher    = {{Elsevier}},
  series       = {{Combustion and Flame}},
  title        = {{Transient AlH distribution around a burning micron-sized Al droplet quantified by laser absorption imaging}},
  url          = {{https://www.sciencedirect.com/science/article/pii/S001021802600026X?via%3Dihub}},
  volume       = {{286}},
  year         = {{2026}},
}