طراحی یک توربین محوری دوطبقه با راندمان بالا با استفاده از روش خط انحنای جریان (Streamline Curvature Method)

Aerodynamic Design of a High-Efficiency 2-Stage Axial Turbine Using the SLC Method

The aerodynamic design of an axial turbine, as a core component of many gas turbine engines, is a complex and multi-level process. It requires careful control of aerodynamic loading, loss mechanisms, and unsteady flow effects. Typically, the design process begins with relatively simple methods to define the overall architecture, and then progresses toward high-fidelity 3D viscous CFD simulations for detail 

.validation and refinement

The Streamline Curvature (SLC) method remains a powerful and computationally efficient tool at the “preliminary” design stage, offering 

.a practical alternative to full 3D-CFD during layout development

As part of a comprehensive design program, I developed an in-house code (≈4000 lines) to redesign a two-stage aero-engine turbine unit 

:for a 130 kN thrust class engine. This framework combines streamline curvature and free vortex methods to enable

Flow-field estimation in meridional turbine passage -
Generation of three-dimensional blade geometries -
Stage-by-stage aerodynamic performance evaluation -

The baseline design achieved an aerodynamic efficiency of 91.83%, validated by 3D-CFD simulations. In a further optimisation step, stage

 indexing was applied to the LPT stator to enhance aerodynamic performance. For those interested in axial turbine design, methodology and details are available in our article, entitled as

“Aerodynamic Design of a High-Efficiency Two-Stage Axial Turbine Using Streamline Curvature Method and Performance Optimisation by Clocking of Stator Blades”,

published in the world's oldest aerospace journal i.e., The Aeronautical Journal (from Cambridge University Press). DOI is here

https://doi.org/10.1017/aer.2024.5

#Axial turbine #AerodynamicDesign #Streamline curvature method #Free vortex method #Wake flow trajectory #AeroEngine