Quantitative analysis of OH concentrations by LIPF and temperature measurements by thermocouple were conducted in laminar premixed CH4/air flames at 1-5 atm. The OH concentrations measured by LIPF for different flames and their calibration curves at different pressures were established. The nearest measuring position was 1 mm downstream of burner surface. The uncertainties in concentration and position measurements were ± 13% and ± 0.5 mm, respectively. The computed OH concentrations were systematically overestimated near the reaction zone. For flames at 1 atm, the overestimation of the OH concentrations was near 95% and more than three-fold and 5-atm flames. The overestimation might be caused by the misinterpretation of the peak flame temperature by given-temperature mode and/or over predicting of the preheating time by the flame simulation. Original is an abstract.
|Number of pages||1|
|Publication status||Published - 2002 Dec 1|
|Event||29th International Symposium on Combustion - Sapporo, Japan|
Duration: 2002 Jul 21 → 2002 Jul 26
|Other||29th International Symposium on Combustion|
|Period||02-07-21 → 02-07-26|
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