Investigations on laminar premixed flame characteristics of ethyl acetate

Ethyl acetate (EtOAc) has the potential as an alternative fuel or fuel additive in internal combustion engines (ICEs). Therefore, it is important to have a good understanding of its combustion characteristics. In this regard, this study investigated the burning characteristics of EtOAc at the initial temperature of 358-418 K and the initial pressure of 1-4 bar over a wide range of equivalence ratio (0.8-1.4) using experimental and numerical analysis. The burning velocity of EtOAc was measured using the constant pressure method (CPM) and constant volume method (CVM) of the spherically expanding flame (SEF) method. The linear approximation and analytical two-zone burned mass fraction correlation were used to determine the burning velocity in the CVM analysis. Generally, the linear approximation burning velocity was almost 11% higher than the analytical two-zone burning velocity. The difference between the CVM and CPM burning velocity was nearly 24%. Laminar burning velocity at an elevated pressure of 11.2 bar was obtained using the CVM analysis. Finally, the experimental and theoretical Markstein length and number of EtOAc were also investigated and discussed. (c) 2021 The Combustion Institute. Published by Elsevier Inc. All rights reserved.