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Auswahl der wissenschaftlichen Literatur zum Thema „Duct aero-acoustics“
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Zeitschriftenartikel zum Thema "Duct aero-acoustics"
Drabek, Pavel, und Martin Zalesak. „CAA Approaches for Duct Elements of HVAC Systems“. MATEC Web of Conferences 328 (2020): 01015. http://dx.doi.org/10.1051/matecconf/202032801015.
Der volle Inhalt der QuelleJEGO, Laurie, Mikaël GRONDEAU, Jean-Max SANCHEZ, Sylvain GUILLOU, Christophe BAILLY und Margaux REGNIEZ. „Numerical simulation of the flow-induced noise of a ducted diaphragm using the Lattice Boltzmann Method“. INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, Nr. 6 (04.10.2024): 5864–74. http://dx.doi.org/10.3397/in_2024_3655.
Der volle Inhalt der QuelleTang, Y. J., L. Gan, C. Liang, J. L. Gao und S. Z. Zhang. „Aero-acoustics study of coupled cavities in close proximity along a rectangular flow duct at low Mach number“. Journal of Physics: Conference Series 2746, Nr. 1 (01.05.2024): 012023. http://dx.doi.org/10.1088/1742-6596/2746/1/012023.
Der volle Inhalt der QuelleAstley, R. J., R. Sugimoto und P. Mustafi. „Computational aero-acoustics for fan duct propagation and radiation. Current status and application to turbofan liner optimisation“. Journal of Sound and Vibration 330, Nr. 16 (August 2011): 3832–45. http://dx.doi.org/10.1016/j.jsv.2011.03.022.
Der volle Inhalt der QuelleBashir, Imran, und Michael Carley. „Development of 3D boundary element method for the simulation of acoustic metamaterials/metasurfaces in mean flow for aerospace applications“. International Journal of Aeroacoustics 19, Nr. 6-8 (03.09.2020): 324–46. http://dx.doi.org/10.1177/1475472x20954423.
Der volle Inhalt der QuelleOkhovatian, Sogand, und Viken Koukounian. „Using empirical data to validate the role of computational fluid dynamics in various stages of aero-acoustic simulations“. Journal of the Acoustical Society of America 155, Nr. 3_Supplement (01.03.2024): A62—A63. http://dx.doi.org/10.1121/10.0026809.
Der volle Inhalt der QuelleGuo, Jingwen, Xiangtian Li, Chenyu Ren und Xin Zhang. „Recognizing the aeroacoustic information of noise radiated by an unflanged duct based on convolutional neural networks“. Journal of the Acoustical Society of America 152, Nr. 5 (November 2022): 2531–42. http://dx.doi.org/10.1121/10.0015003.
Der volle Inhalt der QuelleVan Hirtum, A., R. Blandin und X. Pelorson. „A setup to study aero-acoustics for finite length ducts with time-varying shape“. Applied Acoustics 105 (April 2016): 83–92. http://dx.doi.org/10.1016/j.apacoust.2015.11.019.
Der volle Inhalt der QuelleLacombe, R., S. Föller, G. Jasor, W. Polifke, Y. Aurégan und P. Moussou. „Identification of aero-acoustic scattering matrices from large eddy simulation: Application to whistling orifices in duct“. Journal of Sound and Vibration 332, Nr. 20 (September 2013): 5059–67. http://dx.doi.org/10.1016/j.jsv.2013.04.036.
Der volle Inhalt der QuelleLu, Zhengli, Weichen Pan und Yiheng Guan. „Numerical studies of transmission loss performances of asymmetric Helmholtz resonators in the presence of a grazing flow“. Journal of Low Frequency Noise, Vibration and Active Control 38, Nr. 2 (11.12.2018): 244–54. http://dx.doi.org/10.1177/1461348418817914.
Der volle Inhalt der QuelleDissertationen zum Thema "Duct aero-acoustics"
Alenius, Emma. „Flow Duct Acoustics : An LES Approach“. Doctoral thesis, KTH, MWL Strömningsakustik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-104777.
Der volle Inhalt der QuelleQC 20121113
Yang, Jinyue. „Impedance eduction of acoustic liners with complex sound fields and shear flows“. Electronic Thesis or Diss., Le Mans, 2024. http://www.theses.fr/2024LEMA1023.
Der volle Inhalt der QuelleAcoustic liners are widely used to reduce noise emissions in aircraft engines. The investigation of liners behavior is essential for their development. Impedance eduction is thus commonly implemented to measure its acoustic impedance in presence of flow. The work in this thesis aims to study the performance of the direct eduction method under realistic conditions, especially when considering large ducts, high-order acoustic modes and flow velocities representative of aircraft nacelles. The study is first based on numerical simulations with a multimodal method. Then the MAINE Flow facility is used for experimental validation and demonstration of the proposed methods and conclusions.In large ducts, the sound field is more complex compared to small ducts in the same frequency range. Therefore, the impedance eduction is challenging, and also because it is also perturbed by the background noise due to the presence of flow. The first task is to design microphone arrays for the experimental facility with the aim of performing accurate impedance eduction in large ducts. The second objective is to investigate the effects of shear flow. Impedance eduction is commonly implemented under the hypothesis of uniform mean flow. However, it is reasonable to question the validity of the uniform flow hypothesis, especially when considering large ducts. The third task is to study the influence of the incident sound field. In large ducts, the sound field contains higher-order modes, and different incident waves result in different behavior of the impedance eduction. It is thus necessary to study how the incident acoustic field affects the eduction results in the presence of flow
Hugues, Florian. „Modelling the vibrations generated by turbulent flows in ducts“. Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2470/document.
Der volle Inhalt der QuellePipeline and duct vibrations can cause a range of issues from unplanned shutdownsto decreased equipment life time. Thus, the prediction of flow-induced vibrations is essential in piping design in many industrial plants, especially, for Gas industry. This study deals with the prediction of pipe flow noise and vibration at low Mach number. We aim to present a numerical and experimental study which can offer engineers a better understanding of the coupling between random excitation and duct section for two geometries (circular or rectangular). An experimental facility and measurement approach is developed and used to validate numerical predictions. Two cases are investigated: (i) a straight duct with no singularity, duct acoustic modes are excited by the Turbulent Boundary Layer (TBL) and (ii) a straight duct with a diaphragm inserted upstream generating a localized acoustic source. The acoustic contribution is either measured via cross-spectra based methods or calculated using Computational Fluid Dynamics (CFD) and aeroacoustic analogies. The response of the structure is estimated via a ‘blocked’ approach using analytical modal Frequency Response Functions (FRFs) of a simply supported finite duct. Measurements will lead to evaluate and suggest improvements to existing Cross Power Spectral Density (CPSD) empirical models in a context of internal turbulent flows. Experimental modalanalysis of a finite rectangular duct are confronted to computational methods to assess the effect of the Boundary Conditions (BCs), the resistive damping from coupling with the internal acoustic medium and aerodynamic damping. The fluid-structure coupling is analyzed through the joint acceptance function both in the spatial and wave number domain. The excitation includes both the acoustic and hydrodynamic contributions using CPSD written on the basis of Corcos, Diffuse Acoustic Field (DAF) and acoustic duct mode coherence functions. Finally, the numerical and experimental studies in this thesis were used to develop a framework for studying and modelling pipe flow noise and vibration which links CFD, analytical and empirical models to efficient random analysis techniques
Buchteile zum Thema "Duct aero-acoustics"
Auger, J. M., und J. M. Ville. „Flow Effects on Measurement of the Modal Decomposition of Acoustic Field in a Hard Wall Cylindrical Duct“. In Aero- and Hydro-Acoustics, 437–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82758-7_41.
Der volle Inhalt der QuelleWelsh, M. C., und A. N. Stokes. „Transient Vortex Modelling of Flow Induced Acoustic Resonances Near Cavities or Obstructions in Ducts“. In Aero- and Hydro-Acoustics, 499–505. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82758-7_46.
Der volle Inhalt der QuelleKonferenzberichte zum Thema "Duct aero-acoustics"
Abom, Mats, Sabry Allam und Susann Boij. „Aero-Acoustics of Flow Duct Singularities at Low Mach Numbers“. In 12th AIAA/CEAS Aeroacoustics Conference (27th AIAA Aeroacoustics Conference). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-2687.
Der volle Inhalt der QuelleDefoe, J. J., und Z. S. Spakovszky. „Effects of Boundary Layer Ingestion on the Aero-Acoustics of Transonic Fan Rotors“. In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68503.
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