Citation: | XIE Huihui, FENG Shiyu, PENG Xiaotian, et al. Theoretical of reactor performance in oxygen consumption based inerting system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(11): 2312-2319. doi: 10.13700/j.bh.1001-5965.2019.0117(in Chinese) |
In order to research the working performance of the reactor in oxygen consumption based fuel tank inerting system, the solid phase energy equation was added in the form of UDS to establish the two temperatures reactor model with gas-solid two-phase coupled heat transfer on the basis of Fluent 17.0 software porous medium model, the reaction kinetic equation was tested experimentally with Daqing RP-3 fuel as the object, and the chemical reaction was added in the form of UDF source terms to simulate the reactor. This paper studied the effects of different operating conditions on the inerting efficiency of the reactor, as well as the internal temperature of the reactor in inerting process and variation characteristics of RP-3 concentration. The results show that the effect of reactant concentration on conversion is related to the saturation value of oxygen concentration; the absence of additional cooling will lead to temperature run-away, and the chemical reaction mainly occurs in the second half section of the reactor and is close to the reactor axis. Therefore, when designing the reactor in the future, additional cooling measures should be considered to prevent the temperature run-away and make the temperature of the catalytic bed evenly distributed to improve the work efficiency of the reactor.
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