Research On Numerical Simulation Of Two Phase Combustion Flow Of An Advanced Annular Combustor

In arbitrary curvilinear coordinate systems, three dimensional two-phase reaction flows of an advanced annular combustor are investigated by using numerical simulation method. A body-fitted grid is generated by solving a set of elliptic partial differential equations. During the simulating process, RNG k -ε turbulence model and standard k -ε turbulence model are respectively adopted to simulate turbulent flow. EBU-Arrhenius combustion model is used to determine the rate of reaction and six-flux radiation model is used to predict the distributions of the heat flux. Particles trajectory model is applied to simulation of the movement and transformation of fuel droplet. Two-layer and three-layer wall functions are applied to the prediction of flow in the near wall region. In non-staggered coordinates, the gas phase governing equations are solved by SIMPLE algorithm. The liquid phase calculations are performed by the PSIC method. Motions of the fuel droplets are treated in a Lagrangian frame of reference. Combustor performances are estimated by the empirical-analytical design method. By the comparison of results of experiment and simulation, calculations are quite in agreement with experimental data. It is showed that simulations are very useful to the development work of gas turbine combustor. At the last, scientific visualization technique is employed to enhance the management of program and effects of displaying data.