Observation of stagnation-flow premixed-spray flame structure by high-speed imaging and local chemiluminescence measurement (Effects of oxygen concentration in gaseous phase on flame behavior)

Hiroyasu Saito, Fumiteru Akamatsu, Masashi Katsuki

Research output: Contribution to journalArticle

Abstract

We conducted an experimental observation of polydisperse premixed-spray flames of kerosene in a stagnation flow. For monitoring behaviors of fuel droplet and flame we adopted laser sheet visualization consisting of a high-speed digital CCD camera and Ar-ion laser, and OH-radical and CH-band emissions detected from local region in the vicinity of propagating flame by using a light-collecting probe. Three flames with different oxygen concentration in gaseous phase (21%, 19% and 17%) were examined. These flames had the same initial droplet size-distribution measured by Phase Doppler Anemometry at the burner exit, and all the other experimental conditions were kept same except oxygen concentration. In the case of oxygen concentration of 21%, various shape of spray boundary was formed depending on time, and combustion reaction zone overlapped considerably with spray area. On the other hand, in the case of 17%, the flame showed relatively flat-shaped spray boundary. Furthermore, we compared these flame behaviors and structures with those of premixed-spray flames we had observed before.

Original languageEnglish
Pages (from-to)1943-1950
Number of pages8
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume69
Issue number684
Publication statusPublished - 2003 Aug
Externally publishedYes

Fingerprint

stagnation flow
Chemiluminescence
chemiluminescence
sprayers
flames
high speed
Imaging techniques
Oxygen
oxygen
Lasers
Kerosene
Digital cameras
CCD cameras
Fuel burners
Visualization
Monitoring
Ions
kerosene
digital cameras
burners

Keywords

  • Chemiluminescence
  • Combustion
  • Flame propagation
  • Flame structure
  • Laser
  • Liquid fuel
  • Premixed-spray flame
  • Spray combustion
  • Stagnation flow

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

@article{6dff28dee79241ec85c430704fea4c24,
title = "Observation of stagnation-flow premixed-spray flame structure by high-speed imaging and local chemiluminescence measurement (Effects of oxygen concentration in gaseous phase on flame behavior)",
abstract = "We conducted an experimental observation of polydisperse premixed-spray flames of kerosene in a stagnation flow. For monitoring behaviors of fuel droplet and flame we adopted laser sheet visualization consisting of a high-speed digital CCD camera and Ar-ion laser, and OH-radical and CH-band emissions detected from local region in the vicinity of propagating flame by using a light-collecting probe. Three flames with different oxygen concentration in gaseous phase (21{\%}, 19{\%} and 17{\%}) were examined. These flames had the same initial droplet size-distribution measured by Phase Doppler Anemometry at the burner exit, and all the other experimental conditions were kept same except oxygen concentration. In the case of oxygen concentration of 21{\%}, various shape of spray boundary was formed depending on time, and combustion reaction zone overlapped considerably with spray area. On the other hand, in the case of 17{\%}, the flame showed relatively flat-shaped spray boundary. Furthermore, we compared these flame behaviors and structures with those of premixed-spray flames we had observed before.",
keywords = "Chemiluminescence, Combustion, Flame propagation, Flame structure, Laser, Liquid fuel, Premixed-spray flame, Spray combustion, Stagnation flow",
author = "Hiroyasu Saito and Fumiteru Akamatsu and Masashi Katsuki",
year = "2003",
month = "8",
language = "English",
volume = "69",
pages = "1943--1950",
journal = "Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B",
issn = "0387-5016",
publisher = "Japan Society of Mechanical Engineers",
number = "684",

}

TY - JOUR

T1 - Observation of stagnation-flow premixed-spray flame structure by high-speed imaging and local chemiluminescence measurement (Effects of oxygen concentration in gaseous phase on flame behavior)

AU - Saito, Hiroyasu

AU - Akamatsu, Fumiteru

AU - Katsuki, Masashi

PY - 2003/8

Y1 - 2003/8

N2 - We conducted an experimental observation of polydisperse premixed-spray flames of kerosene in a stagnation flow. For monitoring behaviors of fuel droplet and flame we adopted laser sheet visualization consisting of a high-speed digital CCD camera and Ar-ion laser, and OH-radical and CH-band emissions detected from local region in the vicinity of propagating flame by using a light-collecting probe. Three flames with different oxygen concentration in gaseous phase (21%, 19% and 17%) were examined. These flames had the same initial droplet size-distribution measured by Phase Doppler Anemometry at the burner exit, and all the other experimental conditions were kept same except oxygen concentration. In the case of oxygen concentration of 21%, various shape of spray boundary was formed depending on time, and combustion reaction zone overlapped considerably with spray area. On the other hand, in the case of 17%, the flame showed relatively flat-shaped spray boundary. Furthermore, we compared these flame behaviors and structures with those of premixed-spray flames we had observed before.

AB - We conducted an experimental observation of polydisperse premixed-spray flames of kerosene in a stagnation flow. For monitoring behaviors of fuel droplet and flame we adopted laser sheet visualization consisting of a high-speed digital CCD camera and Ar-ion laser, and OH-radical and CH-band emissions detected from local region in the vicinity of propagating flame by using a light-collecting probe. Three flames with different oxygen concentration in gaseous phase (21%, 19% and 17%) were examined. These flames had the same initial droplet size-distribution measured by Phase Doppler Anemometry at the burner exit, and all the other experimental conditions were kept same except oxygen concentration. In the case of oxygen concentration of 21%, various shape of spray boundary was formed depending on time, and combustion reaction zone overlapped considerably with spray area. On the other hand, in the case of 17%, the flame showed relatively flat-shaped spray boundary. Furthermore, we compared these flame behaviors and structures with those of premixed-spray flames we had observed before.

KW - Chemiluminescence

KW - Combustion

KW - Flame propagation

KW - Flame structure

KW - Laser

KW - Liquid fuel

KW - Premixed-spray flame

KW - Spray combustion

KW - Stagnation flow

UR - http://www.scopus.com/inward/record.url?scp=0242368102&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0242368102&partnerID=8YFLogxK

M3 - Article

VL - 69

SP - 1943

EP - 1950

JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

SN - 0387-5016

IS - 684

ER -