Secondary and Leakage Flow Effects in High-SPeed Low-PrEssurE TurbiNes
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 820883.
SPLEEN investigates the aerodynamics of the next-generation high-speed Low Pressure Turbines. The project specifically focuses on the characterization of the secondary flow structures and the interaction of cavity purge and leakage flows with the mainstream. All these flows are of high technological interest and their accurate consideration is crucial for the development of compact high-speed turbines with high efficiencies.
The SPLEEN project will mark a fundamental contribution to the progress of high-speed low-pressure turbines by delivering unique experimental databases, essential to characterize the time-resolved 3D turbine flow, and new critical knowledge to mature the design of 3D technological effects.
SPLEEN research project aims at:
- Characterizing secondary flow effects in a large-scale high-speed linear cascade at engine-representative Mach and Reynolds numbers by investigating different cavity-airfoil configurations.
- Proposing, designing and testing an innovative technology concept that targets a reduction of the aerodynamic losses induced by the interaction of the secondary-air flow with the mainstream.
- Heavily instrumenting and installing a one-and-a-half turbine stage in a transonic rotating turbine rig. The turbine stage tests will allow characterizing the 3D unsteady flow field and the interactions between mainstream and cavity flows, in an engine-scaled environment under realistic flow conditions.
Project start date: November 1st, 2018
Duration: 40 months
Estimated project cost: EUR 2,000,000
Project Coordinator: von Karman Institute for Fluid Dynamics