Numerical simulation of combustion processes in a gas turbine

摘要: The type of the fuel, upstream and downstream flow conditions, fuel injection mixing processes together with geometry combustion chamber have a significant effect on efficiency, power, consumption, noise emission gas turbines. These contributions can be considered also in virtual prototyping chambers, by which amount time, cost capacity saved. However, accuracy these approaches must within 5-10% for industrial relevancies. Hence, three dimensional, turbulent phase has been modelled tubular turbine main goal comparing different models solid wall boundary conditions real tests. Four as Eddy Dissipation Model (EDM), Probability Density Function Flamelet (PFM), Burning Velocity (BVM) Fluent Non-Premixed (FnPM) applied beside using k-e turbulence model simulations. Three incoming mass flows were implemented according to measurements, originate from Serag-Eldin Spalding's paper [1.]. Although natural used tests, methane simulations, because dominant component burnt was 93.63%. results examined 3 cross sections at certain axial distances along radii. closest measurements provided FnPM, most probably due more accurate thermal walls. In that case, temperature differences between simulations 30% error margin 100% investigated radius average, 10% 98.6% 5% 79.1%.