Effects of hydrogen concentration on premixed laminar flames of hydrogen-methane-air

Ekenechukwu C. Okafor, Akihiro Hayakawa, Yukihide Nagano, Toshiaki Kitagawa

研究成果: ジャーナルへの寄稿記事

39 引用 (Scopus)

抄録

The unstretched laminar burning velocities and Markstein numbers of spherically propagating hydrogen-methane-air flames were studied at a mixture pressure of 0.10 MPa and a mixture temperature of 350 K. The fraction of hydrogen in the binary fuel was varied from 0 to 1.0 at equivalence ratios of 0.8, 1.0 and 1.2. The unstretched laminar burning velocity increased non-linearly with hydrogen fraction for all the equivalence ratios. The Markstein number varied non-monotonically at equivalence ratios of 0.8 and 1.0 and increased monotonically at equivalence ratio of 1.2 with increasing hydrogen fraction. Analytical evaluation of the Markstein number suggested that the trends could be due to the effective Lewis number, which varied non-monotonically with hydrogen fraction at equivalence ratios of 0.8 and 1.0 and increased monotonically at 1.2. The propensity of flame instability varied non-monotonically with hydrogen fraction at equivalence ratios of 0.8 and 1.0.

元の言語英語
ページ(範囲)2409-2417
ページ数9
ジャーナルInternational Journal of Hydrogen Energy
39
発行部数5
DOI
出版物ステータス出版済み - 2 4 2014

Fingerprint

premixed flames
equivalence
Methane
methane
Hydrogen
air
hydrogen
Air
flames
Lewis numbers
trends
evaluation

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

これを引用

Effects of hydrogen concentration on premixed laminar flames of hydrogen-methane-air. / Okafor, Ekenechukwu C.; Hayakawa, Akihiro; Nagano, Yukihide; Kitagawa, Toshiaki.

:: International Journal of Hydrogen Energy, 巻 39, 番号 5, 04.02.2014, p. 2409-2417.

研究成果: ジャーナルへの寄稿記事

@article{fc3a41d4471a4bdeafb545e6f9fe1677,
title = "Effects of hydrogen concentration on premixed laminar flames of hydrogen-methane-air",
abstract = "The unstretched laminar burning velocities and Markstein numbers of spherically propagating hydrogen-methane-air flames were studied at a mixture pressure of 0.10 MPa and a mixture temperature of 350 K. The fraction of hydrogen in the binary fuel was varied from 0 to 1.0 at equivalence ratios of 0.8, 1.0 and 1.2. The unstretched laminar burning velocity increased non-linearly with hydrogen fraction for all the equivalence ratios. The Markstein number varied non-monotonically at equivalence ratios of 0.8 and 1.0 and increased monotonically at equivalence ratio of 1.2 with increasing hydrogen fraction. Analytical evaluation of the Markstein number suggested that the trends could be due to the effective Lewis number, which varied non-monotonically with hydrogen fraction at equivalence ratios of 0.8 and 1.0 and increased monotonically at 1.2. The propensity of flame instability varied non-monotonically with hydrogen fraction at equivalence ratios of 0.8 and 1.0.",
author = "Okafor, {Ekenechukwu C.} and Akihiro Hayakawa and Yukihide Nagano and Toshiaki Kitagawa",
year = "2014",
month = "2",
day = "4",
doi = "10.1016/j.ijhydene.2013.11.128",
language = "English",
volume = "39",
pages = "2409--2417",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier Limited",
number = "5",

}

TY - JOUR

T1 - Effects of hydrogen concentration on premixed laminar flames of hydrogen-methane-air

AU - Okafor, Ekenechukwu C.

AU - Hayakawa, Akihiro

AU - Nagano, Yukihide

AU - Kitagawa, Toshiaki

PY - 2014/2/4

Y1 - 2014/2/4

N2 - The unstretched laminar burning velocities and Markstein numbers of spherically propagating hydrogen-methane-air flames were studied at a mixture pressure of 0.10 MPa and a mixture temperature of 350 K. The fraction of hydrogen in the binary fuel was varied from 0 to 1.0 at equivalence ratios of 0.8, 1.0 and 1.2. The unstretched laminar burning velocity increased non-linearly with hydrogen fraction for all the equivalence ratios. The Markstein number varied non-monotonically at equivalence ratios of 0.8 and 1.0 and increased monotonically at equivalence ratio of 1.2 with increasing hydrogen fraction. Analytical evaluation of the Markstein number suggested that the trends could be due to the effective Lewis number, which varied non-monotonically with hydrogen fraction at equivalence ratios of 0.8 and 1.0 and increased monotonically at 1.2. The propensity of flame instability varied non-monotonically with hydrogen fraction at equivalence ratios of 0.8 and 1.0.

AB - The unstretched laminar burning velocities and Markstein numbers of spherically propagating hydrogen-methane-air flames were studied at a mixture pressure of 0.10 MPa and a mixture temperature of 350 K. The fraction of hydrogen in the binary fuel was varied from 0 to 1.0 at equivalence ratios of 0.8, 1.0 and 1.2. The unstretched laminar burning velocity increased non-linearly with hydrogen fraction for all the equivalence ratios. The Markstein number varied non-monotonically at equivalence ratios of 0.8 and 1.0 and increased monotonically at equivalence ratio of 1.2 with increasing hydrogen fraction. Analytical evaluation of the Markstein number suggested that the trends could be due to the effective Lewis number, which varied non-monotonically with hydrogen fraction at equivalence ratios of 0.8 and 1.0 and increased monotonically at 1.2. The propensity of flame instability varied non-monotonically with hydrogen fraction at equivalence ratios of 0.8 and 1.0.

UR - http://www.scopus.com/inward/record.url?scp=84892363937&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84892363937&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2013.11.128

DO - 10.1016/j.ijhydene.2013.11.128

M3 - Article

VL - 39

SP - 2409

EP - 2417

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 5

ER -