Laminar burning characteristics of 2, 5-dimethylfuran (DMF)-air premixed mixtures at different initial temperatures and equivalence ratios were studied by using a constant volume combustion chamber and high-speed schlieren photograph system. The stretched/unstretched flame propagation speed, laminar burning velocity and Markstein length were obtained in this study. The results show that both unstretched flame propagation speed and laminar burning velocity give their peak values near the equivalence ratio of 1.2, and they increase with the increase of initial temperature. With the increase of initial temperature, the peak of unstretched flame propagation speed moves to the rich mixture side. The Markstein length decreases with the increase of equivalence ratio, while it increases with the increase of initial temperature. Based on the experimental data, a formula to calculate the laminar burning velocities of 2, 5-dimethylfuran-air mixtures is provided.
|Number of pages||4|
|Journal||Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics|
|Publication status||Published - 1 Jun 2010|