Development & Application Of The Software Platform For Turbine Aerodynamic Design

Software modules for turbine aerodynamic computation are designed referring to 3D design system of coolant mixing. The modules consist of seven parts, which are used for file input and output, 1D computation, blade molding, S2 and S1 stream surface computation, 3D computation and drawing. According to the system flow, a turbine aerodynamic computation platform with good interaction is developed with Visual Studio.NET. And the platform is debugged by quasi-3D, 3D aerodynamic computations of a turbine with 3 stages and quasi-3D, 3D aerodynamic design computations of a low-pressure turbine with 4 stages.Quasi3-D, 3-D aerodynamic computations of a turbine with 3 stages are done by use of the platform. As total parameters are modified, a preliminary modification is given on the basis of former modification of the low-pressure turbine, and the modification is obtained by qusi-3D aerodynamic design including S2 stream surface computation, blade molding and S1 stream surface computation. The efficiency of modified 3-stage turbine is increased about 0.5%. Based on the qausi-3D aerodynamic modification, 3D modification design, which leads to about 1% increasing of efficiency, is done.There are also Quasi-3D and 3D aerodynamic design computations of a low-pressure turbine with 4 stages by use of the platform.The aerodynamic design and modification design of there two turbines prove that the design platform is with a certain engineering application.