Gotowe bibliografie tematyczne / UHBR fan

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Gotowa bibliografia na temat „UHBR fan”

Autor: Grafiati

Data publikacji: 7 września 2024

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "UHBR fan"

Natale, N., T. Egger, J. Friedrichs, and S. Russo. "Aerodynamic Analysis of a scaled UHBR Fan." IOP Conference Series: Materials Science and Engineering 1226, no. 1 (2022): 012007. http://dx.doi.org/10.1088/1757-899x/1226/1/012007.

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Abstract In the frame of the CA3ViAR Clean Sky 2 (Composite fan Aerodynamic, Aeroelastic, and Aeroacoustic Validation Rig), the main objective is to design a low-speed (low-transonic) fan typical of a future large aircraft UHBR engine, in terms of aerodynamic shaping as well as structural design and analysis to make sure the test article experiences aerodynamic and aeroelastic instabilities in an expected way during wind tunnel (WT) operations. Eventually, open access to all the produced models will be provided, with the objective to establish an “open test-case” for the whole European scienti

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Pagès, Valdo, Pierre Duquesne, Stéphane Aubert, et al. "UHBR Open-Test-Case Fan ECL5/CATANA." International Journal of Turbomachinery, Propulsion and Power 7, no. 2 (2022): 17. http://dx.doi.org/10.3390/ijtpp7020017.

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The application of composite fans enables disruptive design possibilities but increases sensitivity to multi-physical resonance between aerodynamic, structure dynamic and acoustic phenomena. As a result, aeroelastic problems increasingly set the stability limit. Test cases of representative geometries without industrial restrictions are a key element of an open scientific culture but are currently non-existent in the turbomachinery community. In order to provide a multi-physical validation benchmark representative of near-future UHBR fan concepts, the open-test-case fan stage ECL5 was develope

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Duquesne, Pierre, Quentin Rendu, Stephane Aubert, and Pascal Ferrand. "Choke flutter instability sources tracking with linearized calculations." International Journal of Numerical Methods for Heat & Fluid Flow 30, no. 9 (2019): 4155–66. http://dx.doi.org/10.1108/hff-06-2018-0281.

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Purpose The choke flutter is a fluid-structure interaction that can lead to the failure of fan or compressor blade in turbojet engines. In ultra high bypass ratio (UHBR) fans, the choke flutter appears at part-speed regimes and at low or negative incidence when a strong shock-wave chokes the blade to blade channel. The purpose of this study is to locate the main excitation sources and improving the understanding of the different work exchange mechanisms. This work contributes to avoiding deficient and dangerous fan design. Design/methodology/approach In this paper, an UHBR fan is analyzed usin

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Pinelli, Lorenzo, Maria Malcaus, Giovanni Giannini, and Michele Marconcini. "Some RANS Modeling Results of the UHBR Fan: The Case of ECL5/CATANA." International Journal of Turbomachinery, Propulsion and Power 10, no. 3 (2025): 17. https://doi.org/10.3390/ijtpp10030017.

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With the advancement of modern fan architectures, dedicated experimental benchmarks are becoming fundamental to improving the knowledge of flow physics, validating novel CFD methods, and fine-tuning existing methods. In this context the open test case ECL5/CATANA, representative of a modern Ultra High Bypass Ratio (UHBR) architecture, has been designed and experimentally investigated at École Centrale de Lyon (ECL) in a novel test facility with multi-physical instrumentation, providing a large database of high-quality aerodynamic and aeromechanic measurements. In this paper, a thorough numeric

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Paletta, N., J. Flüh, J. Lindemann, et al. "The preliminary design of a scaled Composite UHBR Fan for a wind tunnel test campaign." IOP Conference Series: Materials Science and Engineering 1226, no. 1 (2022): 012041. http://dx.doi.org/10.1088/1757-899x/1226/1/012041.

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Abstract The ambition of the CA3ViAR project is to design an open test case fan that experiences instability mechanisms, which are representative for ultra-high bypass ratio (UHBR) fans of civil aircrafts, and to perform a comprehensive experimental investigation to measure aerodynamic, aeroelastic and aeroacoustic performance in a wide range of operational conditions. Experimental tests will be performed in the Propulsion-Test-Facility (PTF) of the Institute of Jet Propulsion and Turbomachinery (IFAS) of Technische Universität Braunschweig, Germany. The final objective of the project is to pr

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Eggers, Torben, Jens Friedrichs, Jan Goessling, et al. "Effect of 3D blade design on the aerodynamic, aeroelastic and structural behavior of a scaled UHBR fan." Journal of Physics: Conference Series 2526, no. 1 (2023): 012032. http://dx.doi.org/10.1088/1742-6596/2526/1/012032.

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Abstract In this paper, the effect of a 3D blade design on the aerodynamic, aeroelastic and structural behavior of a scaled UHBR fan is investigated numerically. First, an initial sensitivity analysis for the geometrical design features sweep and lean as well as an adaption of the thickness position in the fan hub region is conducted. Positive sweep is found to benefit the total pressure ratio, while positive lean improves the polytropic efficiency of the fan stage. Moving the maximum thickness position upwards leads to decreased flow turning and total pressure ratio. The mode shape and by tha

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Goessling, Jan, and Joerg R. Seume. "High-speed Digital Image Correlation (DIC) for measuring deformation and vibration of fast rotating fan blades." Journal of Physics: Conference Series 2526, no. 1 (2023): 012075. http://dx.doi.org/10.1088/1742-6596/2526/1/012075.

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Abstract Due to ecological requirements, the bypass-ratio of future civil turbofan engines will be increased. This leads to ultra-high bypass ratio (UHBR) engines, which bring in new challenges concerning the blade material, structural integration, and aeroelastic behaviour of the fan. The ambition of the project Composite fan Aerodynamic, Aeroelastic, and Aeroacoustic Validation Rig (CA3ViAR) is to design and test an open-test-case fan that experiences instability mechanisms, which are representative for UHBR fans of civil aircrafts. The optical measurement technique Digital Image Correlation

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Mennicken, M., D. Schoenweitz, M. Schnoes, and R. Schnell. "Fan design assessment for BLI propulsion systems." CEAS Aeronautical Journal 13, no. 1 (2021): 3–19. http://dx.doi.org/10.1007/s13272-021-00532-8.

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AbstractCivil aviation is aiming at fuel efficient aircraft concepts. Propulsion systems using boundary layer ingestion (BLI) are promising to reach this goal. The focus of this study is on the DLR UHBR fan stage of a tube and wing aircraft with rear-integrated engines. In this integration scenario the propulsion system and especially the fan stage receives distorted inflow in steady-state flight conditions. The distortion pattern and distortion intensity are dependent on the operating conditions. Consequently, the interaction of the fan and the distortion changes over the flight envelope. The

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Stuermer, Arne. "DLR TAU-Code uRANS Turbofan Modeling for Aircraft Aerodynamics Investigations." Aerospace 6, no. 11 (2019): 121. http://dx.doi.org/10.3390/aerospace6110121.

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In the context of an increased focus on fuel efficiency and environmental impact, turbofan engine developments continue towards larger bypass ratio engine designs, with Ultra-High Bypass Ratio (UHBR) engines becoming a likely power plant option for future commercial transport aircraft. These engines promise low specific fuel consumption at the engine level, but the resulting size of the nacelle poses challenges in terms of the installation on the airframe. Thus, their integration on an aircraft requires careful consideration of complex engine–airframe interactions impacting performance, aeroel

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Rozprawy doktorskie na temat "UHBR fan"

Schneider, Alexandra Patrizia. "Aerodynamic and aeroelastic investigation of a composite fan for ultra-high-bypass-ratio aircraft engines." Electronic Thesis or Diss., Ecully, Ecole centrale de Lyon, 2024. http://www.theses.fr/2024ECDL0018.

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Les fans modernes à faible vitesse de rotation à très haut taux de dilution (Ultra-High Bypass Ratio, UHBR) opèrent principalement sur la partie plate de la caractéristique de compression, ont des lon-gueurs de l'entrée d'air plus courtes et sont constitués d'aubes en composites flexibles et légères. Ces changements favorisent l'évolution de différents types d'instabilités avec des interactions multi-physiques telles que les vibrations non-synchrones convectives (NSV). Pour permettre de nouvelles avancées technologiques, des données de référence expérimentales sur des géométries représenta-tiv

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Książki na temat "UHBR fan"

Y, Ho Patrick, Mani Ramani, and United States. National Aeronautics and Space Administration., eds. UHB engine fan broadband noise reduction study. National Aeronautics and Space Administration, 1995.

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Steiger, Diego. Zeitreise Time Travel Uhr Kalender 2021: Jahreskalender Für Zeitreise und Science-Fiction Fans. Independently Published, 2020.

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Steiger, Diego. Zeitreise Time Travel Uhr Studienplaner 2020/21: Semesterplaner Für Zeitreise und Science-Fiction Fans. Independently Published, 2020.

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Notizbücher, Luftsport. Terminplaner 2019-2020: Für Drachenfliegen Fans Juli 2019 Bis Dezember 2020 Wochentage Unterteilt Von 7. 00 Bis 21. 00 Uhr Mit Den Wichtigsten Feiertagen Deutschlands. Independently Published, 2019.

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Części książek na temat "UHBR fan"

Duquesne, Pierre, Stéphane Aubert, Quentin Rendu, and Pascal Ferrand. "Effect of Frozen Turbulence Assumption on the Local Blades Vibration on the Choke Flutter Instability in Transonic UHBR Fan." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-55594-8_29.

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Streszczenia konferencji na temat "UHBR fan"

Eggers, Torben, Jens Friedrichs, Jan Goessling, et al. "Composite UHBR Fan for Forced Response and Flutter Investigations." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-58941.

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Abstract In the CA3ViAR (Composite fan Aerodynamic, Aeroelastic, and Aeroacoustic Validation Rig) project, a composite low-transonic fan is designed and tested. The aim is a scaled ultra-high bypass ratio (UHBR) fan with state-of-the-art aerodynamic performance and composite rotor blades, which features aeroelastic phenomena, e.g. forced response by inlet distortions and flutter, under certain operating points within the wind tunnel. In this paper, the aerodynamic and aeroelastic design process starting from the overall performance specifications to a threedimensional numerical model is descri

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Benini, Ernesto, Chetankumar Mistry, and Aspi R. Wadia. "Historical Developments in Fan Technologies for Aeroengines." In ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/gt2023-101639.

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Abstract This paper reports on the evolution of fan aerodynamics starting with turbofan engines featuring moderate by-pass ratios (between 4 and 6) up to Ultra-High-By-pass-Ratio (UHBR) configurations which are currently being developed. The implementation of key enabling technologies for fan blades are discussed from a historical perspective, spanning from high-aspect ratio fan blades with part span shrouds (or snubber) to wide chord fan blades, from un-ducted (UDF) and propfan open rotors to highly swept blades. With continuous requirements for higher thrust and lower fuel consumption, bypas

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Rodrigues, Martin, Laurent Soulat, Benoit Paoletti, Xavier Ottavy, and Christoph Brandstetter. "Aerodynamic Investigation of a Composite Low-Speed Fan for UHBR Application." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14915.

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Abstract A composite fan stage representative of a modern UHBR architecture has been investigated experimentally on a novel test facility at Ecole Centrale de Lyon. These measurements show indications for strong overloading of the tip region resulting in extensive blockage of the blade passage. The performance of the fan is analyzed with extensive instrumentation including radial profiles upstream and downstream of the rotor. Unsteady pressure measurements help to interpret the flow structure in the tip region. The results are presented across a range of operating points on the design speedlin

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Zillmann, Jörgen, and U. Tapken. "Tonal Noise Radiation from UHBR Fan - Active Control of Radiation Characteristic." In 15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference). American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-3226.

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Schuff, Matthias, and Jannik Reisberg. "Flutter Analysis of a Flexible UHBR Fan at Different Flight Conditions." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76930.

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A flexible UHBR fan is investigated at different flight conditions with a focus on static deflections and aeroelastic stability. Operating points at varying inlet conditions, which are comparable according to the Mach similarity principle, are investigated. However, not all the aerodynamic characteristics remain identical and aerodynamic damping of mode shape vibrations is changed. When steady deformations of the fan blades are taken into account, the deviation between different inlet conditions increases further. This is mainly due to torsional deflections, changing the effective angle of att

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Brandstetter, Christoph, Alexandra P. Schneider, Anne-Lise Fiquet, Benoit Paoletti, and Xavier Ottavy. "Experiments on Structurally Mistuned UHBR Open-Test-Case Fan ECL5/CATANA." In ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/gt2024-129163.

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Abstract The operational capabilities of turbofan engines encounter limitations due to instabilities arising from tightly coupled interactions among aerodynamics, acoustics, and structural mechanics. Modern fans and compressors exhibit Non-Synchronous Vibration (NSV), leading to safety-critical blade oscillations. In contrast to self-excited phenomena such as flutter, NSV stems from the convection of aerodynamic disturbances that synchronize with blade eigenmodes. Understanding this phenomenon is challenging, as its intricate interaction patterns and the occurrence of flow separations constrai

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Pereira, Antonio, Edouard Salze, Josselin Regnard, Fernando Gea-Aguilera, and Mathieu Gruber. "New modular fan rig for advanced aeroacoustic tests - Modal decomposition on a 20" UHBR fan stage." In 25th AIAA/CEAS Aeroacoustics Conference. American Institute of Aeronautics and Astronautics, 2019. http://dx.doi.org/10.2514/6.2019-2604.

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Neuhaus, Lars, Ulf Tapken, Lars Enghardt, Gerd Enders, and Jörgen Zillmann. "Reduction of UHBR fan blade tones by flow induced secondary sound sources." In 22nd AIAA/CEAS Aeroacoustics Conference. American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-2891.

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Weckmüller, Christian, Sebastien Guerin, and Graham Ashcroft. "CFD/CAA Coupling Applied to DLR UHBR-Fan: Comparison to Experimantal Data." In 15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference). American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-3342.

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Fiquet, Anne-Lise, Alexandra P. Schneider, Benoit Paoletti, Xavier Ottavy, and Christoph Brandstetter. "Experiments on Tuned UHBR Open-Test-Case Fan ECL5/CATANA: Stability Limit." In ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/gt2023-102537.

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Abstract Research of the past decades has shown that the operating range of modern fans and compressors is often limited by aeroelastic phenomena before the onset of pure aerodynamic instability. Prediction of these mechanisms is challenging for state-of-the-art numerical methods, particularly for configurations with flexible wide-chord blades. To provide a benchmark configuration for the community, the composite-material fan stage ECL5, representative of near future Ultra-High-Bypass Ratio architectures has been designed at Ecole Centrale de Lyon and recently shared as an open-test-case. In r

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