Abstract: A zone data transmit method has been developed for simulating the two-phase reacting flowfield of the whole annual reversed combustor including the cooling passages in an arbitrary curvilinear coordinates.The gas phase is treated with Eulerian method by adopting the k-ε two-equation turbulent model,EBU-Arrhenius turbulent combustion model and six-flux radiation model,and the liquid phase is treated with Lagrangian method.The gas phase is solved with SIMPLE algorithm in non-staggered grid system,and the liquid phase is solved with PSIC algorithm by adopting the particle trajectory model.The calculation results of the flowfield under four different conditions are reasonable.It is shown that the numerical study of the combustor as a whole can reflect flowfield heat transfer and combustion comprehensively and provide useful information for the engineering research and optimization of the combustor.