Journal
COMBUSTION AND FLAME
Volume 220, Issue -, Pages 73-81Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.combustflame.2020.06.023
Keywords
Formic acid; Laminar flame speed; Kinetic model; Sensitivity analysis; Pathway analysis
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Funding
- Natural Science Foundation of Shaanxi Province for Distinguished Young Scholars [2020JC-04]
- National Natural Science Foundation of China [51888103, 51876163, 91641124]
- Young Talent Support Plan of Shaanxi Province
- Science and Technology on Combustion, Internal Flow and Thermal-structure Laboratory [6142701190401]
- Fundamental Research Funds for the Central Universities
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Laminar flame speeds of formic acid were measured at equivalence ratios of 0.4-1.6, initial temperature of 423-453 K and atmospheric pressure. Chemical kinetic models (Glarborg model and AramcoMech 3.0) were validated against the present experimental data. Deep kinetic insight was investigated using the present models. In addition, detailed analysis was carried out according to transport, thermal and kinetic effect to find out the totally different performance of these two models. The results show that the simulated laminar flame speeds using Glarborg model match well with experimental data while AramcoMech 3.0 apparently over predicts the laminar flame speeds. HOCO and OCHO are driving species for the laminar flame speed of formic acid. Furthermore, the pathway analysis indicates formic acid is consumed mainly by abstraction reaction with OH, forming OCHO radical, which quickly dissociates to H + CO2. (C) 2020 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
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