The simulation of dynamic reverse flow operation (RFO) with reactor side feeding for selectivity issue during exothermic reaction, while incorporating mass and energy balances both solid phase and gas phase, is presented in this paper. This reactor operation was proposed with aim to avoid the conversion decrease during regular RFO. In addition, the manipulation of the product distribution became another opportunity for improved reactor performance. The reactor model consisted of mass balances on the level of elementary steps, which led to detailed dynamic influence of flow reversal effect on kinetics. The energy balance was incorporated with lean heat release due to very small concentration of reactant, diluted by inert. The model resulted in partial differential equation for mass balance in the gas phase, heat balances either in the gas phase and solid phase, and ordinary differential equation for mass balance in the solid phase. All differential equations were simultaneously solved using a software package FlexPDE version 7. The results showed the production rate of the desired product can be kept at high level, which may exceed the level of regular RFO and even of steady state operation (SSO). Even for the quasi-steady state regime, the reverse flow reactor with side feeding shows a different product distribution in comparison to SSO. The influence of shifting the feed positions to the reactor center is most pronounced. The reverse flow operation with reactor side feeding is a prime key for improved conversion and manipulation of product distribution.