Experimental Study on Highly Diluted n-butylbenzene and n-butylbenzene/n-decane Mixtures behind Reflected Shock Waves

摘要

In the present investigation the autoignition of n-butylbenzene and n-butylbenzene/n-decane mixtures at highly diluted conditions has been investigated experimentally using shock tube techniques. The comparison between the experimental results indicates that the presence of n-decane substantially reduces the ignition delay times. The experimental results were simulated using a chemical kinetic model developed from single-component models available in literature. The blended model was able to accurately describe the experimental curves and was used to perform additional analyses which helped clarifying the ignition behavior of the different mixtures. The blended model was also tested against the n-butylbenzene data available in literature. The analysis showed that the model is able to simulate reasonably well the high-pressure jet stirred reactor and shock tube data, although at atmospheric pressure conditions the reactivity of n-butylbenzene is overestimated. Additional work is necessary to improve the prediction capabilities of the model.