Numerical simulation of three-dimensional combustion flows in annular reversed combustor

Numerical simulations of two-phase reacting flow in an annular reverse flow combustor were developed in a three-dimensional non-orthogonal curvilinear coordinate system.RNG k^-ε model,EBU-Arrhenius turbulence combustion model,discrete-ordinates(DO) model and Six-flux model were used for the gas phase flows.The liquid phase calculations were carried out with the Particle Trajectory model.The gas discretization equations were solved with SIMPLEalgorithm.PSICalgorithm was employed to take into account the mass,momentum and energy coupling between two phases.The calculated exit temperature coefficient distributions are in agreement with the corresponding measurements.Predictions show that this numerical method is reasonable;the DOmodel is better than the six-flux model and is therefore more applicable for simulation of two-phase reacting flows of the annular reversed combustor.