Implicit coupled solution of the combustion chamber with the spray

In unstructured grid,open source was used to simulate the spray combustion process in annular combustor of a certain turbojet engine.At first,the k-ε two-equation model,EBU (eddy break up) -Arrhenius turbulent combustion model,and particle stochastic trajectory model were selected to simulate the physical process of flow field.Then implicit coupled algorithm was described for solving gas flow,the Lagrangian method was used to track the movement of droplets in the fluid region,and two-way coupling was used for the effect between gas phase and droplet phase.Distributions of temperature,mach number,velocity and pressure obtained from simulation experiments were reasonable,and distribution of temperature was roughly in accord with that of the literature.This shows that implicit coupled method can well simulate the flow fields in combustion chamber,and reflect internal flow features of it.