Stagnation laminar premixed CH<inf>4</inf>/air flame subjected to the equivalence ratio oscillations

Mohd Rosdzimin Abdul Rahman, Hishashi Tomita, Takeshi Yokomori, Toshihisa Ueda

Research output: Contribution to journalArticle

Abstract

The effect of the equivalence ratio oscillation on a premixed laminar CH4/air flame motion was studied experimentally with equivalence ratio oscillation frequencies of 2 to 15 Hz at lean equivalence ratio using stagnation flow field burner. Novel oscillator does the oscillation conditions and turbulence reduction method is used to suppress the velocity perturbation. The flame position variations at 2, 5, 10 and 15 Hz oscillation frequencies were significantly small when the amplitude of the equivalence ratio oscillation was zero. On the other hand, increase in amplitudes of the equivalence ratio oscillation increased the flame position variation significantly. The flame moved in sinusoidal shape and it can be clearly seen that the flame movement's amplitude was proportional to the amplitudes of the equivalence ratio variations. This result showed that the velocity perturbation is significantly suppressed by turbulence reduction method in the examination range.

Original languageEnglish
Pages (from-to)55-60
Number of pages6
JournalJurnal Teknologi
Volume76
Issue number1
Publication statusPublished - 2015 Sep 1

Fingerprint

Turbulence
Air
Fuel burners
Flow fields

Keywords

  • Equivalence ratio oscillation
  • Laminar premixed flame
  • Turbulence reduction method

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Stagnation laminar premixed CH<inf>4</inf>/air flame subjected to the equivalence ratio oscillations. / Abdul Rahman, Mohd Rosdzimin; Tomita, Hishashi; Yokomori, Takeshi; Ueda, Toshihisa.

In: Jurnal Teknologi, Vol. 76, No. 1, 01.09.2015, p. 55-60.

Research output: Contribution to journalArticle

Abdul Rahman, Mohd Rosdzimin ; Tomita, Hishashi ; Yokomori, Takeshi ; Ueda, Toshihisa. / Stagnation laminar premixed CH<inf>4</inf>/air flame subjected to the equivalence ratio oscillations. In: Jurnal Teknologi. 2015 ; Vol. 76, No. 1. pp. 55-60.
@article{083f8ce08c1645aa8bae6526c5697039,
title = "Stagnation laminar premixed CH4/air flame subjected to the equivalence ratio oscillations",
abstract = "The effect of the equivalence ratio oscillation on a premixed laminar CH4/air flame motion was studied experimentally with equivalence ratio oscillation frequencies of 2 to 15 Hz at lean equivalence ratio using stagnation flow field burner. Novel oscillator does the oscillation conditions and turbulence reduction method is used to suppress the velocity perturbation. The flame position variations at 2, 5, 10 and 15 Hz oscillation frequencies were significantly small when the amplitude of the equivalence ratio oscillation was zero. On the other hand, increase in amplitudes of the equivalence ratio oscillation increased the flame position variation significantly. The flame moved in sinusoidal shape and it can be clearly seen that the flame movement's amplitude was proportional to the amplitudes of the equivalence ratio variations. This result showed that the velocity perturbation is significantly suppressed by turbulence reduction method in the examination range.",
keywords = "Equivalence ratio oscillation, Laminar premixed flame, Turbulence reduction method",
author = "{Abdul Rahman}, {Mohd Rosdzimin} and Hishashi Tomita and Takeshi Yokomori and Toshihisa Ueda",
year = "2015",
month = "9",
day = "1",
language = "English",
volume = "76",
pages = "55--60",
journal = "Jurnal Teknologi (Sciences and Engineering)",
issn = "0127-9696",
publisher = "Penerbit Universiti Teknologi Malaysia",
number = "1",

}

TY - JOUR

T1 - Stagnation laminar premixed CH4/air flame subjected to the equivalence ratio oscillations

AU - Abdul Rahman, Mohd Rosdzimin

AU - Tomita, Hishashi

AU - Yokomori, Takeshi

AU - Ueda, Toshihisa

PY - 2015/9/1

Y1 - 2015/9/1

N2 - The effect of the equivalence ratio oscillation on a premixed laminar CH4/air flame motion was studied experimentally with equivalence ratio oscillation frequencies of 2 to 15 Hz at lean equivalence ratio using stagnation flow field burner. Novel oscillator does the oscillation conditions and turbulence reduction method is used to suppress the velocity perturbation. The flame position variations at 2, 5, 10 and 15 Hz oscillation frequencies were significantly small when the amplitude of the equivalence ratio oscillation was zero. On the other hand, increase in amplitudes of the equivalence ratio oscillation increased the flame position variation significantly. The flame moved in sinusoidal shape and it can be clearly seen that the flame movement's amplitude was proportional to the amplitudes of the equivalence ratio variations. This result showed that the velocity perturbation is significantly suppressed by turbulence reduction method in the examination range.

AB - The effect of the equivalence ratio oscillation on a premixed laminar CH4/air flame motion was studied experimentally with equivalence ratio oscillation frequencies of 2 to 15 Hz at lean equivalence ratio using stagnation flow field burner. Novel oscillator does the oscillation conditions and turbulence reduction method is used to suppress the velocity perturbation. The flame position variations at 2, 5, 10 and 15 Hz oscillation frequencies were significantly small when the amplitude of the equivalence ratio oscillation was zero. On the other hand, increase in amplitudes of the equivalence ratio oscillation increased the flame position variation significantly. The flame moved in sinusoidal shape and it can be clearly seen that the flame movement's amplitude was proportional to the amplitudes of the equivalence ratio variations. This result showed that the velocity perturbation is significantly suppressed by turbulence reduction method in the examination range.

KW - Equivalence ratio oscillation

KW - Laminar premixed flame

KW - Turbulence reduction method

UR - http://www.scopus.com/inward/record.url?scp=84940688846&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84940688846&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:84940688846

VL - 76

SP - 55

EP - 60

JO - Jurnal Teknologi (Sciences and Engineering)

JF - Jurnal Teknologi (Sciences and Engineering)

SN - 0127-9696

IS - 1

ER -