Radermacher, Benedikt ; Klausmann, Fabian ; Bargon, Jonas ; Lücke, Marvin ; Schiffer, Heinz-Peter ; Becker, Bernd (2024)
Aerodynamic Investigation of Different Variable Stator Configurations in a 1.5-stage Transonic Compressor.
26th Conference of the International Society for Air Breathing Engines. Toulouse, France (22.09.2024 – 27.09.2024)
Konferenzveröffentlichung, Bibliographie

Kurzbeschreibung (Abstract)

Innovative technology will be needed in future aero engine designs to solve environmental challenges and fulfill upcoming noise and emissions regulations. Current development trends aim to increase engine efficiency while reducing weight and size. This demands greater overall pressure ratios from the axial core compressors and a more compact, lightweight design. On one hand, weight reduction can be achieved through novel materials with higher yield strength. On the other hand, size reduction inherently implies weight reduction. The high-pressure compressor front stages are often equipped with variable stator vanes for the operability of the compressor. Decreasing the diameter of the core compressor necessitates design modifications to the variable stator vanes, specifically the stator hub region with the penny needs to be redesigned. This research examines the aerodynamic characteristics of a 1.5-stage transonic axial compressor featuring an engine like variable stator vane with a penny gap and penny cavity. In addition to the experiments, a detailed computational fluid dynamics simulation with the non simplified test rig geometry has been carried out. The investigated compressor stage serves as a reference for follow up investigations. Therefore the variable stator vane behaviour for the design speed line and the behaviour under different variable stator vane stagger angles are investigated in detail. The performance evaluation encompasses an in-depth analysis of various critical loss mechanisms inherent to each respective arrangement. Thereby, flow conditions within the penny and hub region of the shrouded stator are investigated. The conducted experimental studies enable a detailed insight into the pressure loss mechanisms of the variable stator vane. In conjunction with the computational fluid dynamics, an in-depth descripition of the flow regime at the hub-sided penny is possible.

Frage zum Eintrag

Redaktionelle Details anzeigen