Aerodynamic Design And Analysis For Low Pressure Turbine Of A Large Scale Turbofan Engine

As a very important component of aeroengines, low pressure turbine affects the mass, the specific fuel consumption, the efficiency of aeroengine greatly. Affected by big fan and size, the aerodynamic design of large scale turbine engine is different from traditional , which has a lot of characters, that's just the paper does.With HIT Turbine Aerodynamic Design Platform , the paper completes 1D and 2D aerodynamic designs and analyses of the low pressure turbine of a large scale Turbine Engine, including the analysis of the profile. HIT Turbine Aerodynamic Design Platform, which is developed by HIT Power Machinery & Engineering institute and based on Muscovite programs for turbine engine, is checked up by engineering, but whoes user's interface is not perfect. Therefore, the paper also perfect it.In order to analyse the 3D characteristics of the low pressure turbine, the paper uses software CFX to completes 3D numerical simulation for it. Considering the effect of specific heat, the paper compiled several programs, which coded in Fortran language, used to deal with the result of CFX. At the same time, the paper copiles the interface of CFX and Tecplot to describe the results clearly.Through the paper not only is the turbine platform perfect but some characteristics of this style turbine concluded, high load coefficient, low Reynolds number flow in last stage, ect. So the paper presents the difficulties and problems on aerodynamic design, that shoud paied more attention, and point out the way to optimize it.