... Abstract Pre-stall rotating pressure disturbances were observed at off-design conditions in an axial compressor. The temporal and spectral characteristics of the rotating disturbances were studied at different mass flow rates along a part-speed, partially-closed inlet guide vane (IGV...

... Abstract For the most part, the flow over an axial compressor blade is subjected to adverse pressure gradients. Under low Reynolds number conditions, the flow could separate off the blade surface especially on the suction side, where it first accelerates to a peak velocity and then decelerates...

... compressor CFD experiment Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom GT2024-124697 NUMERICAL AND EXPERIMENTAL INVESTIGATION OF STEADY FLOW DISTORTION IN DROOPED TURBOFAN INTAKES Yuhan Zhang Beihang University...

... and tool commonalities. While the primary focus of the current work is on compressor design, the principles presented are adaptable and expandable to turbine disk applications as well. disks compressor aero engine bore temperature low cycle fatigue Proceedings of ASME Turbo Expo 2024...

... Abstract Non-synchronous vibrations (NSV) occurring near the stall boundary pose a major challenge to the design of safe and efficient compressors and fans. NSV occurs when aerodynamic disturbances which develop close to the aerodynamic stability limit couple with blade vibration. Despite its...

... in the aerodynamic design could be better exploited. aeroelasticity compressor structural dynamics Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom GT2024-124275 AEROELASTIC INFLUENCE OF BLADE-SHAFT COUPLING IN A 1 1/2...

... Abstract Reliable and computationally affordable aeroelastic simulations of compressor blades are of capital relevance today, as modern turbomachinery for aircraft propulsion are expected to meet stricter goals on weight saving and fuel efficiency through slender and highly-loaded geometries...

... Abstract Centrifugal compressors play a critical role in various industrial applications, and understanding their operational behavior, especially during surge conditions, is essential for enhancing efficiency and reliability. Surge is a phenomenon that leads to significant pressure and mass...

... Abstract This paper presents a study on the average eigenvalue sensitivity to design variables of an integrally geared centrifugal compressor pinion-bearing system and its application to the improvement of the rotordynamic stability. The average eigenvalue sensitivity is the approximation...

... Abstract Water injection (WI) can potentially remedy aircraft-related nitrogen oxide (NO x ) pollution around airports and substantially extend the hot section’s life. No high-fidelity study exists examining the effects of deploying compressor water injection (CWI) on turbofans — an engine type...

... Abstract The performance and reliability of a compressor can be adversely affected by its inlet conditions. In this paper, the effect of planar wave on a two-stage axial compressor is investigated experimentally with aperiodic inlet dynamic distortions generated by the insertion and extraction...

... Abstract This paper addresses the aerodynamic challenges associated with the introduction of a hybrid engine, aiming to enhance efficiency and reduce fuel consumption. Focusing on a smaller, higher-loading compressor rear stage, the study explores three critical questions related to pressure...

... Abstract In modern compressor, the demand for highly loaded stages, coupled with lightweight design, necessitates a growing need for high manufacturing accuracy. However, it is challenging to eliminate the underlying sources of uncertainty. Investigating potential factors influencing compressor...

... Abstract In pursuing energy-efficient, low-emission propulsion concepts, civil aviation takes a renewed interest in compressor water injection (CWI). The unprecedented heat capacity of water can be utilised for effective compressor cooling through evaporation, thus substantially reducing...

... and thermocompressible exergy outflow components, but has non-negligible effects on the anergy generation characterizing irreversible losses. fan OGV compressor exergy balance high-order scheme performance losses NASA SDT FFX Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference...

...Proceedings of ASME Turbo Expo 2024 Turbomachinery Technical Conference and Exposition GT2024 June 24-28, 2024, London, United Kingdom GT2024-121461 NUMERICAL SIMULATIONS OF ICE PARTICLE TRANSPORT AT REPRESENTATIVE TURBOFAN COMPRESSOR CONDITIONS Liam Parker Oxford University, Oxford, OX1 2JD...

... distributions, the constant C f must be adjusted according to the changing conditions. Considering a classical compressor or turbine performance curve, the angles of incidence change as the mass flow changes, and the losses increase according to the design condition. In addition, the shock losses also increase...

... Abstract This paper presents results from a comprehensive sensitivity analysis focused on loss models used in a recently developed compressor unsteady mean line flow model for a transonic axial-centrifugal compressor. The mean line flow model treats flow through rotors and stators...

... Abstract In this paper, it will be shown that small inlet fins mounted in the compressor inlet pipe can improve the compressor stability limit by alleviating the impeller inlet recirculation flow. Performance tests on the hot gas test bench and unsteady Computational Fluid Dynamics (CFD...

... Abstract Blade end slots has been proved to be an effective method to suppress the corner separation, thereby improving the aerodynamic performance of compressor. The unsteady effects of blade end slots affiliated with a highly-loaded compressor cascade on corner separation control...