Erosion of compressor blades due to operation in dusty environments is a serious problem for the manufacturers and users of gas turbine engines, because of significant degradations in performance. This study has been devoted to estimating the change of performance parameters of an axial compressor stage due to erosive deterioration. The influence of erosion considered as consequences of a reduction of rotor blade airfoils, and an increase of tip clearance. The results of this study obtained using the CFD code “NUMECA Fine/Turbo”. This CFD code is a steady, quasi-three-dimensional Reynolds Averaged Navier-Stokes (RANS) solver. A Spalart-Allmaras turbulence model is used. The compressor stage parameters presented for three rotational speeds. Proposed a new approach to consider the changes of geometric parameters of blades due to erosion. Presented an analysis of the effect of erosion and its individual consequences on the pressure ratio, isentropic efficiency and stability margin of the stage. The obtained results verified using an existing experimental data.

The design of high-performance combustion chambers for gas turbine engines is considered one of the difficult tasks for engineers. This study presents the design of a can-type combustion chamber. The parametric cycle analysis of a low bypass turbofan engine (AL-31F) was provided to obtain the air properties at the combustor inlet. Empirical equations are used to determine the dimensions of the combustion chamber. GAMBIT software was used to create the combustor model and the simulation was accomplished using ANSYS software. This CFD code is a steady, quasi-three-dimensional Reynolds Averaged Navier-Stokes (RANS) solver. K-w viscous model and non-premixed combustion model are used. Presented the results of cycle analysis of the turbofan engine and the dimensions of combustor components and cooling holes. An analysis of the distribution of temperature, pressure, and velocity throughout the combustion chamber is provided. The obtained results were compared for analytical and computational approaches and suggested with previous studies.