Macroscopic flame structure in a premixed-spray burner (formation and disappearance processes of droplet clusters and two-stage flame structure)

Shohji Tsushima, Hiroyasu Saito, Fumiteru Akamatsu, Masashi Katsuki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In an attempt to elucidate formation and disappearance processes of droplet clusters in spray flames, simultaneous measurements consisting of laser tomography and flame chemiluminescence detection are applied to a premixed-spay burner. The smart combination of measurements provides time-series data-set serving for better understanding of spray flames, which essentially contains inhomogeneity in space and time. It is revealed that preferential flame propagation through a premixed-spray stream plays a significant role in creating droplet clusters and that droplet clusters formed in this manner evanesces from their outer boundaries. Those observation confirms that the premixed-spray flame comprises both premixed-mode flame in upstream region and diffusion-mode flame in downstream region, respectively, i.e., two-stage flame structure previously reported for spray flames stabilized in either counter or stagnation flows.

Original languageEnglish
Pages (from-to)616-623
Number of pages8
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume44
Issue number4
DOIs
Publication statusPublished - 2001 Nov
Externally publishedYes

Fingerprint

burners
Fuel burners
sprayers
flames
Chemiluminescence
Tomography
Time series
Lasers
stagnation flow
counterflow
chemiluminescence
flame propagation
upstream
inhomogeneity
tomography
time measurement
lasers

Keywords

  • Combustion
  • Droplet cluster
  • Flame propagation
  • Group combustion
  • Laser
  • Laser tomography
  • Light emission
  • Liquid fuel
  • Spray flame

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

Cite this

@article{641072dbaf7b446980cd64f4766ad166,
title = "Macroscopic flame structure in a premixed-spray burner (formation and disappearance processes of droplet clusters and two-stage flame structure)",
abstract = "In an attempt to elucidate formation and disappearance processes of droplet clusters in spray flames, simultaneous measurements consisting of laser tomography and flame chemiluminescence detection are applied to a premixed-spay burner. The smart combination of measurements provides time-series data-set serving for better understanding of spray flames, which essentially contains inhomogeneity in space and time. It is revealed that preferential flame propagation through a premixed-spray stream plays a significant role in creating droplet clusters and that droplet clusters formed in this manner evanesces from their outer boundaries. Those observation confirms that the premixed-spray flame comprises both premixed-mode flame in upstream region and diffusion-mode flame in downstream region, respectively, i.e., two-stage flame structure previously reported for spray flames stabilized in either counter or stagnation flows.",
keywords = "Combustion, Droplet cluster, Flame propagation, Group combustion, Laser, Laser tomography, Light emission, Liquid fuel, Spray flame",
author = "Shohji Tsushima and Hiroyasu Saito and Fumiteru Akamatsu and Masashi Katsuki",
year = "2001",
month = "11",
doi = "10.1299/jsmeb.44.616",
language = "English",
volume = "44",
pages = "616--623",
journal = "JSME International Journal, Series B: Fluids and Thermal Engineering",
issn = "0914-8817",
publisher = "Japan Society of Mechanical Engineers",
number = "4",

}

TY - JOUR

T1 - Macroscopic flame structure in a premixed-spray burner (formation and disappearance processes of droplet clusters and two-stage flame structure)

AU - Tsushima, Shohji

AU - Saito, Hiroyasu

AU - Akamatsu, Fumiteru

AU - Katsuki, Masashi

PY - 2001/11

Y1 - 2001/11

N2 - In an attempt to elucidate formation and disappearance processes of droplet clusters in spray flames, simultaneous measurements consisting of laser tomography and flame chemiluminescence detection are applied to a premixed-spay burner. The smart combination of measurements provides time-series data-set serving for better understanding of spray flames, which essentially contains inhomogeneity in space and time. It is revealed that preferential flame propagation through a premixed-spray stream plays a significant role in creating droplet clusters and that droplet clusters formed in this manner evanesces from their outer boundaries. Those observation confirms that the premixed-spray flame comprises both premixed-mode flame in upstream region and diffusion-mode flame in downstream region, respectively, i.e., two-stage flame structure previously reported for spray flames stabilized in either counter or stagnation flows.

AB - In an attempt to elucidate formation and disappearance processes of droplet clusters in spray flames, simultaneous measurements consisting of laser tomography and flame chemiluminescence detection are applied to a premixed-spay burner. The smart combination of measurements provides time-series data-set serving for better understanding of spray flames, which essentially contains inhomogeneity in space and time. It is revealed that preferential flame propagation through a premixed-spray stream plays a significant role in creating droplet clusters and that droplet clusters formed in this manner evanesces from their outer boundaries. Those observation confirms that the premixed-spray flame comprises both premixed-mode flame in upstream region and diffusion-mode flame in downstream region, respectively, i.e., two-stage flame structure previously reported for spray flames stabilized in either counter or stagnation flows.

KW - Combustion

KW - Droplet cluster

KW - Flame propagation

KW - Group combustion

KW - Laser

KW - Laser tomography

KW - Light emission

KW - Liquid fuel

KW - Spray flame

UR - http://www.scopus.com/inward/record.url?scp=0035521259&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035521259&partnerID=8YFLogxK

U2 - 10.1299/jsmeb.44.616

DO - 10.1299/jsmeb.44.616

M3 - Article

VL - 44

SP - 616

EP - 623

JO - JSME International Journal, Series B: Fluids and Thermal Engineering

JF - JSME International Journal, Series B: Fluids and Thermal Engineering

SN - 0914-8817

IS - 4

ER -