A two-dimensional pseudo-homogeneous reactor model of porous media coupled with chemical reaction was established by CFD method to research the operating range of the reactor in the oxygen consumption based inerting system as well as the impact on the reactor performance under different working conditions. The single-temperature model of porous media in Fluent 170 software was adopted

and the solid phase energy equation was added through UDS(user defined scalar). RP-3 fuel was taken as the object

and the chemical reaction heat was added to the solid phase energy equation in the form of source term. The operating range of the reactor was analyzed under the condition of different superficial gas velocity and different RP-3 mole fraction without temperature runaway

the indicator of oxygen consumption rate was introduced to evaluate the influence of the reactor on the inerting system

and the influence of the inlet gas temperature on the operating range and reactor performance was discussed. Results showed that the reactor had a certain operating range

and increasing the inlet gas temperature would reduce the operating range; the oxygen consumption rate tended to be constant with the increase of inlet gas velocity; the oxygen consumption rate would be greatly increased by RP-3 mole fraction and the temperature rise of the inlet gas. Therefore

these factors should be fully considered in the future design of oxygen consumption based inerting reactor.