Quantitative LIF measurements and modeling of nitric oxide in high-pressure C{sub 2}H{sub 4}/O{sub 2}/N{sub 2} flames

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Combustion and Flame

DOI:https://doi.org/10.1016/0010-2180(94)00195-X· OSTI ID:63257

Reisel, J R; Laurendeau, N M ^[1]

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1. Purdue Univ., West Lafayette, IN (United States)

The authors have obtained quantitative LIF measurements of NO concentration in the post-flame zone of a series of flat, laminar, premixed C{sub 2}H{sub 4}/O{sub 2}/N{sub 2} flames at pressures ranging from 1 to 11.9 atm. The internal consistency of the data was verified by demonstrating good agreement between measurements based on two different NO excitation lines. The temperatures of the flames were 1600-1850 K, indicating that most of the NO produced in the flames is prompt-NO. The results show that the equivalence ratio corresponding to the peak NO concentration at a given pressure shifts towards leaner conditions with increasing pressure. The authors have also modeled the flames using two chemical kinetics schemes: (1) the Glarborg-Miller-Kee mechanism as modified by Drake and Blint (GMK-DB), and (2) the Miller-Melius hydrocarbon mechanism, combined with the nitrogen kinetics of Drake and Blint (MIME-DB). Both models are qualitatively inaccurate with respect to the measured pressure shift, particularly at pressures below 6.1 atm. Both models also tend to underpredict the NO concentrations, although the GMK-DB model is acceptable in many cases.

• OSTI ID: 63257
• Journal Information: Combustion and Flame, Journal Name: Combustion and Flame Journal Issue: 1-2 Vol. 101; ISSN CBFMAO; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
54 ENVIRONMENTAL SCIENCES
CHEMICAL COMPOSITION
CHEMICAL REACTION YIELD
COMBUSTION KINETICS
CONCENTRATION RATIO
ETHYLENE
FLAMES
GAS TURBINE ENGINES
MATHEMATICAL MODELS
NITRIC OXIDE
TEMPERATURE MEASUREMENT