Parametric Study of Axial Flow Turbine for Mean-Line Design and Blade Elements

A parametric study is carried out for aerodynamic performance of turbines including geometrical requirements, thermal requirements, mechanical integrity and manufacturing requirements. Life cycle costs, product cycle time and weight are additional, possible criteria during the parametric study. Preliminary design plays an important role in reaching the final design of the turbine. Preliminary design steps calculate the mean dimensions of the machine. The main step in the aerodynamic design which is instrumental in providing desired performance is blade element profile generation. During the profile generation, in addition to aerodynamic performance, additional constraints for castability, structural requirements and thermal requirements need to be considered. Thus profile generation is a trade-off between contradicting requirements of aerodynamic performance, structural and thermal performance.