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Long chain alcohols are potential fuels for engine applications, however, their combustion characteristics need to be adequately investigated compared to short chain alcohols (C 1-C 4), especially at high mixture temperatures, and other conditions relevant to engine temperatures. In the present work, meso-scale diverging channel method has been used to measure the laminar burning velocity of n-pentanol+air mixtures at elevated temperatures due to existence of very limited data at higher mixture temperatures (~ 473 K). The present experiments are carried out at atmospheric pressure with unburnt mixture temperature varying up to 560 K. The dependence of laminar burning velocity on temperature was correlated using the power law: , where α is the temperature exponent. The results show the existence of a minimum value of α for slightly rich mixtures. A reduced kinetic model based *Manuscript Click here to download Manuscript: Pentanol_final_rev3.docx Click here to view linked References on the previous detailed kinetic model of Sarathy (2014) for C 1-C 5 straight-chain alcohols was generated with 199 species and 1427 reactions. Experimental results of laminar burning velocity of n-pentanol+air mixtures at high temperatures were compared with the present model and other kinetic models from the literature. The skeletal model accurately reproduces the measurements at various conditions.

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In the present work, measured laminar burning velocities of methyl formate (MF)–air mixtures at atmospheric pressure are presented for high mixture temperatures (up to 500 K) using an externally heated mesoscale diverging channel method. The experiments were performed for equivalence ratios ranging from Φ = 0.6 to Φ = 1.4 with an unburnt mixture temperature range from 350 to 500 K. The results reported in the literature and mechanism predictions of Aramco 2.0 (2016), Dievart (2013), and Dooley (2010) using PREMIX code are then compared with the data obtained from the existing experimental setup. The progressive change of temperature exponent and laminar burning velocity with equivalence ratios is akin to the other gaseous and liquid fuels outlined in the literature. The maxima and minima associated with the laminar burning velocity and temperature exponent (α) respectively is observed at Φ ≈ 1.1 or a slightly richer side. The mechanism predictions of the Aramco 2.0 (2016) detailed kinetic model is used for a detailed analysis of the mixture oxidation to account for the sensitivity of the key reactions on the laminar burning velocity. The overall effect of H-abstraction of methyl formate enhances the laminar burning velocity at 500 K. From reaction pathway analysis, it is observed that the global combustion rate rises when the unburnt mixture temperature changes from 348 to 500 K.