Laminar flame characteristics of 2-ethylfuran/air mixtures: Experimental and kinetic modelling investigations

Combustion/explosion characteristics of 2-ethylfuran (2-EF) have been investigated using the constant volume combustion analysis at the initial pressures of 1, 2, 3, and 4 bar, initial temperatures of 373, 403, and 433 K over a wide range of equivalence ratios of 0.7-1.4. More specifically, the laminar burning velocity, peak explosion pressure, and maximum pressure rise rate of 2-EF were investigated. The peak explosion pressure was investi-gated using numerical and experimental analysis; the experimental data were slightly lower than the numerical results due to heat loss to the combustion chamber walls in the course of the experiment. As expected, the peak explosion pressure increased as the initial pressure increased and the initial temperature decreased. Similarly, the maximum pressure rise rate increased as the initial pressure increased but the maximum pressure rise rate was somehow close at the different initial temperatures. The burning velocity investigations showed that the maximum burning velocity occurred at the equivalence ratio of 1.1, except for conditions whereby the flame was unstable. The constant volume method (CVM) was used to obtain burning velocities at elevated pressures and temperatures up to 10 bar and 548 K for the 2-EF premixture. Finally, sensitivity analysis was done to evaluate the most sensitive reactions that influenced 2-EF premixture combustion/explosion.

Automated summary

The combustion/explosion characteristics of 2-ethylfuran (2-EF) were extensively studied, including parameters such as peak explosion pressure, maximum pressure rise rate, and burning velocity, and it was found that these characteristics are influenced by initial pressure and temperature. Through experimental and numerical analysis, a deeper understanding of the combustion properties of 2-EF was obtained.