TY - JOUR

T1 - Laminar Burning Velocities of Formic Acid and Formic Acid/Hydrogen Flames

T2 - An Experimental and Modeling Study

AU - Osipova, Ksenia N.

AU - Sarathy, S. Mani

AU - Korobeinichev, Oleg P.

AU - Shmakov, Andrey G.

N1 - Funding Information: The reported study was funded by RFBR under project No. 20-33-90163. The research at King Abdullah University of Science and Technology (KAUST) was supported by Saudi Aramco. Publisher Copyright: © Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1/21

Y1 - 2021/1/21

N2 - Laminar flame speed of formic acid and formic acid/hydrogen (4/1) flames was studied both experimentally and numerically. Experiments with flames of pure formic acid were performed at temperatures of 373 and 423 K, while for formic acid/hydrogen flames the temperature value was 368 K. All of the experiments were performed under atmospheric pressure and at an equivalence ratio ranging from 0.5 to 1.5. To measure the laminar flame speed, the heat flux balance technique was applied. Three detailed chemical-kinetic mechanisms were tested on experimental data. Experiments showed that addition of 20% of hydrogen increases the laminar burning velocity of formic acid, for example, at around 1.5 for stoichiometric flames. The comparison of experimental and numerical data showed that all models tend to overestimate laminar burning velocities of studied flames, especially in the case of rich flames. The obtained results indicate that further improvement of existing chemical-kinetic models of formic acid oxidation is highly required.

AB - Laminar flame speed of formic acid and formic acid/hydrogen (4/1) flames was studied both experimentally and numerically. Experiments with flames of pure formic acid were performed at temperatures of 373 and 423 K, while for formic acid/hydrogen flames the temperature value was 368 K. All of the experiments were performed under atmospheric pressure and at an equivalence ratio ranging from 0.5 to 1.5. To measure the laminar flame speed, the heat flux balance technique was applied. Three detailed chemical-kinetic mechanisms were tested on experimental data. Experiments showed that addition of 20% of hydrogen increases the laminar burning velocity of formic acid, for example, at around 1.5 for stoichiometric flames. The comparison of experimental and numerical data showed that all models tend to overestimate laminar burning velocities of studied flames, especially in the case of rich flames. The obtained results indicate that further improvement of existing chemical-kinetic models of formic acid oxidation is highly required.

UR - http://www.scopus.com/inward/record.url?scp=85100187962&partnerID=8YFLogxK

U2 - 10.1021/acs.energyfuels.0c03818

DO - 10.1021/acs.energyfuels.0c03818

M3 - Article

AN - SCOPUS:85100187962

VL - 35

SP - 1760

EP - 1767

JO - Energy & Fuels

JF - Energy & Fuels

SN - 0887-0624

IS - 2

ER -