Large Eddy Simulation of Turbulent Combustion Flow in a Gas-Turbine Combustor

In views of mechanical engineering, a primary problem in energy equipment design is to control of turbulent flows. Large eddy simulation is applied for analyzing tree-dimensional and unsteady features in gas-turbine combustor. For these purpose, LES with a G-equation flame model based on the flamelet concept is developed on the general co-ordinate grid and is demonstrated in design of a premixed gas-turbine combustor for aircraft engine. The simulations of the flame propagation are executed in some conditions with different relations of the equivalent ratios, and the flame positions and propagating behaviors are analyzed.