Two-line ( CH ∗ / CO 2 ∗ ) chemiluminescence technique for equivalence ratio mapping in turbulent stratified flames
作者: M. Mustafa Kamal
作者单位: 1Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
刊名: Energy, 2020, Vol.192
来源数据库: Elsevier Journal
DOI: 10.1016/
关键词: Two-line chemiluminescenceTurbulent combustionStratified flamesExcited speciesRaman measurementsGas turbine engines
原始语种摘要: Abstract(#br)Equivalence ratio fluctuations play an important role in exploring and controlling flame dynamic instabilities such as thermoacoustic combustion instabilities associated with lean premixed gas turbine (GT) engines. However, it is difficult to reliably measure local equivalence ratio, and so we often make estimates based on the ratios of chemiluminescent emissions. Recent studies have reported that equivalence ratio varies with chemiluminescence intensity ratio of CH * and CO 2 * in the visible spectrum (431 and 410 nm, respectively). A methodology based on this relationship is adopted in the present study to construct equivalence ratio maps for a series of turbulent premixed and stratified methane/air flames under globally lean conditions (mean or global equivalence ratio, ϕ...
全文获取路径: Elsevier  (合作)
影响因子:3.651 (2012)

  • CH ChaiN
  • equivalence 等价
  • stratified 成层的
  • turbulent 紊聊
  • mapping 映象
  • technique 技术
  • ratio