Aerodynamic Structure of a Laminar Boundary Layer Diffusion Flame over a Horizontal Flat Plate (2nd Report, Experimental Analysis)

Toshihisa Ueda, Akira Ooshima, Naoki Saito, Masahiko Mizomoto

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Experimental investigations on an aerodynamic structure of a laminar boundary layer diffusion flame over a horizontal flat plate have been performed. Effects of gravitational force and velocity gradient of free stream velocity have been discussed. When a fuel (methane) is injected upward, the velocity around a flame zone is locally accelerated, and the velocity gradient at the wall is increased as compared with that of isothermal flow. On the other hand, when a fuel is injected downward, the velocity is retarded, and the velocity gradient at the wall is decreased in not only a downstream region of the leading flame edge but also the upstream region. This reveals that the gravitational force varies the local pressure distribution not only in a downstream region of the leading flame edge but also in the upstream region. It is also elucidated that the velocity gradient of free steam velocity varies the velocity profiles in a boundary layer.

Original languageEnglish
Pages (from-to)3501-3507
Number of pages7
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume56
Issue number531
DOIs
Publication statusPublished - 1990
Externally publishedYes

Fingerprint

laminar boundary layer
Laminar boundary layer
diffusion flames
flat plates
aerodynamics
Aerodynamics
flames
gradients
upstream
isothermal flow
free flow
pressure distribution
steam
Pressure distribution
boundary layers
methane
velocity distribution
Boundary layers
Methane
Steam

Keywords

  • Boundary Layer
  • Diffusion Combustion
  • Diffusion Flame
  • Free Stream Acceleration
  • Gravitational Force
  • Laminar Flow
  • Velocity Distribution

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Aerodynamic Structure of a Laminar Boundary Layer Diffusion Flame over a Horizontal Flat Plate (2nd Report, Experimental Analysis). / Ueda, Toshihisa; Ooshima, Akira; Saito, Naoki; Mizomoto, Masahiko.

In: Transactions of the Japan Society of Mechanical Engineers Series B, Vol. 56, No. 531, 1990, p. 3501-3507.

Research output: Contribution to journalArticle

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