| Citation: | TIAN Yushi，ZENG Wen，CHEN Xiaoxiao，et al.Experiment and simulation on oxidation characteristics of natural gas［J］.Journal of Aerospace Power，2022，37（9）：1886‑1895. doi: 10.13224/j.cnki.jasp.20210409
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The oxidation of natural gas （90% methane/7% ethane/3% propane，volume fraction） was experimentally tested in the flow reactor under the conditions of the pressure of 0.1 MPa，the temperature range of 550-1 850 K，the equivalence ratios of 0.5，1.0 and 3.5.Meanwhile，through the global sensitivity analysis，the reduced reaction kinetic mechanism of the natural gas （including 38 species and 149 reactions） was established，and the oxidation characteristics of the natural gas were simulated.The results showed that，with the increase of equivalent ratio，the starting and ending temperatures of fuel oxidation reaction gradually rose，the reaction temperature of CO generation and complete consumption raised，and the production of NO reduced.The reduced reaction mechanism of the natural gas had a good prediction of the variational trends of the mole fractions of the main species with temperature during the oxidation of the natural gas.However，there existed still some deviations in the prediction of the starting reaction temperature or the peak mole fractions of some species，such as C3H8，C2H2，NO and NO2.
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