摘要
n-Decane was chosen as a one-component surrogate fuel to investigate the combustion performance ofRocket Propellant-3（RP-3） aviation kerosene. Sensitivity analysis and the reaction-path mlalysis method were used tosimplify the detailed reaction mechanism of n-decane, and a simplified mechanism including 36 species and 62 ele-mentary reaction steps was obtained. Moreover, 38-step elementary reaction investigated in the reference was simu-lated in the paper. Numlerical simulation method was conducted for both the 62-step and the 38-step reaction me-chanisms using pre-evaporation combustion models. Simultaneously Bunsen bunter for the combustion of premixed,pre-evaporated RP-3 aviation kerosene was designed to verify the simplified mechanism, and the temperature and gascomponent concentrations in the axial and radial directions at different heights were measured. The experimental re-sults revealed that the reaction temperature and the CO2 concentration increased first and then decreased across thea：,：ial positions, but on the contrary for the O2 concentration. The temperature and the O2 concentration distributionsof experimental results are in good agreement with that of numerical simulation results for the 62-step simplifiedreactions, and the CO2 concentration distribution is in general agreement with the numerical data. But the 38-stepsimplified reactions can only predict the change trend for the important parameters which are mentioned above.Through the contrastive analysis for these two kinds of simplified reactions, the 62-step reactions can more accuratelysimulate the combustion characteristics of RP-3 kerosene. Aud n-decane can be used as a one-component surrogatefuel for RP-3 aviation kerosene.
