Heat transfer to the wall of end gas side during propagation of premixed flame in a closed vessel (Heat flux measurements by both interference image analysis and thin surface thermocouple methods)

Yoshisuke Hamamoto, Eiji Tomita, Masaki Yamanaka, Motoshi Kataoka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

It is necessary to know the heat flux near a wall in order to understand the unsteady heat transfer in a combustion chamber. In this study, a fuel-air mixture was ignited at the center of a constant-volume vessel and the heat flux was determined from the change in the temperature distribution in the boundary layer near the wall of the end gas side by analyzing the interference image. The heat flux was compared with that from a thin surface coaxial thermocouple with high response. It was found that before the flame arrives at the wall, the heat transfer is smaller than the thermal radiation from the flame, and the temperature of unburned gas changes nearly adiabatically. After the flame reaches the wall, the heat flux due to the temperature gradient becomes larger than that due to the thermal radiation.

Original languageEnglish
Pages (from-to)836-843
Number of pages8
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume39
Issue number4
Publication statusPublished - Nov 1996

Fingerprint

premixed flames
thermocouples
Thermocouples
image analysis
Image analysis
vessels
Heat flux
heat flux
Gases
heat transfer
Heat transfer
interference
flames
propagation
Heat radiation
thermal radiation
gases
combustion chambers
Combustion chambers
Thermal gradients

Keywords

  • Boundary Layer
  • Combustion
  • Digital Image Processing
  • Heat Flux
  • Heat Transfer
  • Interferometry
  • Laser-Aided Diagnostics
  • Premixed Combustion
  • Temperature Measurement
  • Thermal Radiation

ASJC Scopus subject areas

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

Cite this

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abstract = "It is necessary to know the heat flux near a wall in order to understand the unsteady heat transfer in a combustion chamber. In this study, a fuel-air mixture was ignited at the center of a constant-volume vessel and the heat flux was determined from the change in the temperature distribution in the boundary layer near the wall of the end gas side by analyzing the interference image. The heat flux was compared with that from a thin surface coaxial thermocouple with high response. It was found that before the flame arrives at the wall, the heat transfer is smaller than the thermal radiation from the flame, and the temperature of unburned gas changes nearly adiabatically. After the flame reaches the wall, the heat flux due to the temperature gradient becomes larger than that due to the thermal radiation.",
keywords = "Boundary Layer, Combustion, Digital Image Processing, Heat Flux, Heat Transfer, Interferometry, Laser-Aided Diagnostics, Premixed Combustion, Temperature Measurement, Thermal Radiation",
author = "Yoshisuke Hamamoto and Eiji Tomita and Masaki Yamanaka and Motoshi Kataoka",
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AU - Hamamoto, Yoshisuke

AU - Tomita, Eiji

AU - Yamanaka, Masaki

AU - Kataoka, Motoshi

PY - 1996/11

Y1 - 1996/11

N2 - It is necessary to know the heat flux near a wall in order to understand the unsteady heat transfer in a combustion chamber. In this study, a fuel-air mixture was ignited at the center of a constant-volume vessel and the heat flux was determined from the change in the temperature distribution in the boundary layer near the wall of the end gas side by analyzing the interference image. The heat flux was compared with that from a thin surface coaxial thermocouple with high response. It was found that before the flame arrives at the wall, the heat transfer is smaller than the thermal radiation from the flame, and the temperature of unburned gas changes nearly adiabatically. After the flame reaches the wall, the heat flux due to the temperature gradient becomes larger than that due to the thermal radiation.

AB - It is necessary to know the heat flux near a wall in order to understand the unsteady heat transfer in a combustion chamber. In this study, a fuel-air mixture was ignited at the center of a constant-volume vessel and the heat flux was determined from the change in the temperature distribution in the boundary layer near the wall of the end gas side by analyzing the interference image. The heat flux was compared with that from a thin surface coaxial thermocouple with high response. It was found that before the flame arrives at the wall, the heat transfer is smaller than the thermal radiation from the flame, and the temperature of unburned gas changes nearly adiabatically. After the flame reaches the wall, the heat flux due to the temperature gradient becomes larger than that due to the thermal radiation.

KW - Boundary Layer

KW - Combustion

KW - Digital Image Processing

KW - Heat Flux

KW - Heat Transfer

KW - Interferometry

KW - Laser-Aided Diagnostics

KW - Premixed Combustion

KW - Temperature Measurement

KW - Thermal Radiation

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