Experimental study of the emission of electronically excited CH, C2, OH, and CO2 during ignition of hydrocarbons behind reflected shock waves

The autoignition of simple hydrocarbons, such as ethane, ethylene, and acetylene, in mixtures with oxygen diluted with Ar behind reflected shock waves in a temperature range of 1150-1800 K and a pressure of ∼ 0.1 MPa is studied using the chemiluminescence from electronically excited CH* (λ = 430 nm)...

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Bibliographic Details
Published in:Journal of physics. Conference series 2016-11, Vol.774 (1)
Main Authors: Tereza, A M, Demidenko, T S, Garmash, A A, Smirnov, V N, Shumova, V V, Vlasov, P A
Format: Article
Language:English
Subjects:
Acetylene
Chemiluminescence
Delay time
Emission analysis
Emitters
Ethane
Hydrocarbons
Ignition
Physics
Shock wave reflection
Spontaneous combustion
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Summary:The autoignition of simple hydrocarbons, such as ethane, ethylene, and acetylene, in mixtures with oxygen diluted with Ar behind reflected shock waves in a temperature range of 1150-1800 K and a pressure of ∼ 0.1 MPa is studied using the chemiluminescence from electronically excited CH* (λ = 430 nm), C2* (λ = 516.5 nm), OH* (λ = 308 nm), and CO2* (λ = 363 nm). Our experimental results are in good agreement with the published data obtained under similar conditions. Numerical simulations within the framework of a well-tested kinetic mechanism closely reproduce the measured values of the ignition delay times and time profiles of the emission signals. A comparison of the experimental and calculated shapes of the emission signals made it possible to identify key reactions responsible for the chemiluminescence of the indicated emitters.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/774/1/012080