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RISUnsteady Investigation of Intermediate Turbine Ducts Under the Influence of Purge Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The aerodynamic flow field at the outlet of a high-pressure turbine (HPT) stage in a modern turbofan engine is highly unsteady and strongly influenced by periodic fluctuations from the HPT rotor, also interacting with the ...
Impact of High-Pressure-Turbine Purge Flow on the Evolution of Turbulence in a Turbine Vane Frame
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes the measurement and postprocessing of turbulence data. The experiments were carried out in a two-stage, two-spool transonic turbine test rig at the Institute for Thermal Turbomachinery and Machine ...
Unsteady Investigation of the Effect of Purge Air on the Flow Field Inside a Turbine Vane Frame Using Particle Image Velocimetry
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Reducing greenhouse gas emissions and high fuel expenses motivates manufacturers to design more efficient aircraft engines. For directly driven jet engines, this is possible through increased bypass ratios for high propulsive ...
The Interaction of Main Stream Flow and Cavity Flows in Turbine Center Frames and Turbine Vane Frames
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper focuses on the interaction between the last high-pressure turbine (HPT) stage purge flows and the intermediate turbine duct (ITD) in modern turbofan engines. Two state-of-the-art ITD concepts are analyzed in ...