TY - JOUR

T1 - Flame Speciation and Laminar Burning Velocity of Tetralin Flames Under Atmospheric Pressure

AU - Matyushkov, Vladislav V.

AU - Chernov, Anatoly A.

AU - Novikov, Mikhail V.

AU - Osipova, Ksenia N.

AU - Bolshova, Tatyana A.

AU - Dmitriev, Artëm M.

AU - Knyazkov, Denis A.

AU - Shmakov, Andrey G.

N1 - This research was funded by the Ministry of Science and Higher Education of the Russian Federation, agreement dated on 24 April 2024, No. 075-15-2024-543.

PY - 2025/11/8

Y1 - 2025/11/8

N2 - We present a combined experimental and modeling study of premixed atmospheric-pressure tetralin flames. Chemical speciation in near-stoichiometric (φ = 0.8–1.0) tetralin/O2/Ar flames was characterized by probe-sampling molecular-beam mass spectrometry (MBMS) with soft ionization (12.3–18 eV). Total ionization cross-sections (TICSs) for heavy intermediates were computed ab initio to enable quantitative MBMS processing. Laminar burning velocities (LBVs) of tetralin/air flames were measured in a range of equivalence ratios (φ = 0.75–1.5) on a nozzle burner via the stretch-corrected total area method. This is the first reported LBV data for tetralin/air flames (maximum LBV was 47.3 ± 2 cm/s at φ = 1.1). The experimental mole fraction profiles and LBVs were interpreted using three detailed mechanisms. None of the mechanisms were able to correctly describe the LBV profile, and a number of discrepancies were observed in the mole fraction profiles. Reaction network and sensitivity analyses were performed to identify specific sub-mechanisms requiring refinement. In particular, the subchemistry of naphthalene and indene strongly affects the accuracy of model predictions, whereas the flame speciation data indicate large uncertainties in the simulated concentrations of these species.

AB - We present a combined experimental and modeling study of premixed atmospheric-pressure tetralin flames. Chemical speciation in near-stoichiometric (φ = 0.8–1.0) tetralin/O2/Ar flames was characterized by probe-sampling molecular-beam mass spectrometry (MBMS) with soft ionization (12.3–18 eV). Total ionization cross-sections (TICSs) for heavy intermediates were computed ab initio to enable quantitative MBMS processing. Laminar burning velocities (LBVs) of tetralin/air flames were measured in a range of equivalence ratios (φ = 0.75–1.5) on a nozzle burner via the stretch-corrected total area method. This is the first reported LBV data for tetralin/air flames (maximum LBV was 47.3 ± 2 cm/s at φ = 1.1). The experimental mole fraction profiles and LBVs were interpreted using three detailed mechanisms. None of the mechanisms were able to correctly describe the LBV profile, and a number of discrepancies were observed in the mole fraction profiles. Reaction network and sensitivity analyses were performed to identify specific sub-mechanisms requiring refinement. In particular, the subchemistry of naphthalene and indene strongly affects the accuracy of model predictions, whereas the flame speciation data indicate large uncertainties in the simulated concentrations of these species.

KW - chemical flame structure

KW - flame speed

KW - kinetic mechanism

KW - molecular-beam mass-spectrometry

KW - tetralin

UR - https://www.scopus.com/pages/publications/105023216295

UR - https://www.mendeley.com/catalogue/0bdf0cde-ae3f-35b5-8732-b1268e9b2837/

U2 - 10.3390/en18225878

DO - 10.3390/en18225878

M3 - Article

VL - 18

JO - Energies

JF - Energies

SN - 1996-1073

IS - 22

M1 - 5878

ER -