Detailed measurement and assessment of laminar hydrogen jet diffusion flames

T. S. Cheng, C. Y. Wu, C. P. Chen, Y. H. Li, Y. C. Chao, T. Yuan, T. S. Leu

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)

Abstract

Time-averaged, spatially resolved point measurements of temperature, major species concentrations (O2, N2, H2O, H2), and hydroxyl radical concentration (OH) in laminar hydrogen jet diffusion flames (Re = 30 and 330) are performed using nonintrusive UV Raman scattering coupled with the laser-induced predissociative fluorescence (LIPF) technique for assessment of combustion models. Effects of thermal diffusion and chemical kinetics on the flame structure are investigated by comparing computed results with experimental data. Comparisons of the computed temperature and species concentration profiles with experimental measurements are in good agreement for both flames. The numerical simulations, using the Miller and Bowman mechanism, indicate that thermal diffusion affects the flame structure for the Re = 330 flame, whereas its influence becomes minor for the Re = 30 flame. Effects of chemical kinetics on the flame structure are investigated in the Re = 30 flame using five different H2/air reaction mechanisms. Comparisons of the measured and calculated data reveal that this low stretched flame is not very sensitive to the mechanisms used and it may not be suitable for examining the effects of chemical kinetics on the flame structure. Effects of burner wall and coflow boundary conditions on the computed flame structures are also examined in detailed to clarify the importance of boundary conditions in simulating these flames.

Original languageEnglish
Pages (from-to)268-282
Number of pages15
JournalCombustion and Flame
Volume146
Issue number1-2
DOIs
Publication statusPublished - 2006 Jul

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Detailed measurement and assessment of laminar hydrogen jet diffusion flames'. Together they form a unique fingerprint.

Cite this