Laminar burning velocity of stoichiometric CH4/air premixed flames at high-pressure and high-temperature

Yasuhiro Ogami, Hideaki Kobayashi

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Experimental and numerical studies on laminar burning velocities of stoichiometric CH4/air flames were performed at high pressure and high temperature. A stoichiometric CH4/air mixture was diluted by helium in order to restrain the intrinsic flame instabilities occurring at high pressure. Measurements of laminar burning velocity for burner-stabilized flames were conducted by a technique employing particle tracking velocimetry (PTV) and planar laser induced fluorescence for OH radical (OH-PLIF) simultaneously, which measures the instantaneous local burning velocity. Laminar burning velocities were determined by the average values of local burning velocities in the region where the Karlovitz number are sufficiently small, meaning that the effect of flame stretch and curvature can be neglected. Numerical simulations were also conducted using a one-dimensional premixed flame code. Detailed reaction mechanisms and the 4-step reduced mechanism were examined, and their results were compared with experimental results to investigate the feasibility of predicting the flame characteristics at high pressure and high temperature, based on the reaction mechanisms.

Original languageEnglish
Pages (from-to)603-609
Number of pages7
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume48
Issue number3
DOIs
Publication statusPublished - 2006 Feb 15

Keywords

  • Burning velocity
  • Chemical reaction
  • Flame stretch
  • High pressure
  • High temperature
  • OH-PLIF
  • PTV
  • Premixed combustion

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Laminar burning velocity of stoichiometric CH<sub>4</sub>/air premixed flames at high-pressure and high-temperature'. Together they form a unique fingerprint.

  • Cite this