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Статті в журналах з теми "Turbofan intake noise radiation"
Palma, Giorgio, Lorenzo Burghignoli, Francesco Centracchio, and Umberto Iemma. "Innovative Acoustic Treatments of Nacelle Intakes Based on Optimised Metamaterials." Aerospace 8, no. 10 (October 14, 2021): 296. http://dx.doi.org/10.3390/aerospace8100296.
Повний текст джерелаGuérin, S., and A. Holewa. "Fan tonal noise from aircraft aeroengines with short intake: A study at approach." International Journal of Aeroacoustics 17, no. 6-8 (August 7, 2018): 600–623. http://dx.doi.org/10.1177/1475472x18789001.
Повний текст джерелаGroeneweg, J. F., and E. J. Rice. "Aircraft Turbofan Noise." Journal of Turbomachinery 109, no. 1 (January 1, 1987): 130–41. http://dx.doi.org/10.1115/1.3262058.
Повний текст джерелаÖzyörük, Y., E. Alpman, V. Ahuja, and L. N. Long. "Frequency-domain prediction of turbofan noise radiation." Journal of Sound and Vibration 270, no. 4-5 (March 2004): 933–50. http://dx.doi.org/10.1016/s0022-460x(03)00640-0.
Повний текст джерелаKorotin, P. I., O. A. Potapov, G. E. Fiks, I. S. Fiks, Ia S. Pochkin, and I. D. Khaletskii. "Active noise suppression in the model of turbofan intake duct." Aviation Engines, no. 2 (2021): 7–16. http://dx.doi.org/10.54349/26586061_2021_2_7.
Повний текст джерелаPolacsek, C., and S. Burguburu. "Fan Interaction Noise Predictions Using RANS-BEM Coupling." International Journal of Aeroacoustics 4, no. 1-2 (January 2005): 153–67. http://dx.doi.org/10.1260/1475472053729987.
Повний текст джерелаRouvas, D.-M., and A. McAlpine. "Prediction of Fan Tone Radiation Scattered By A Cylindrical Fuselage." IOP Conference Series: Materials Science and Engineering 1226, no. 1 (February 1, 2022): 012050. http://dx.doi.org/10.1088/1757-899x/1226/1/012050.
Повний текст джерелаParrett, A. V., and W. Eversman. "Wave envelope and finite element approximations for turbofan noise radiation in flight." AIAA Journal 24, no. 5 (May 1986): 753–60. http://dx.doi.org/10.2514/3.9342.
Повний текст джерелаKholodov, Pavel, and Stéphane Moreau. "Identification of Noise Sources in a Realistic Turbofan Rotor Using Large Eddy Simulation." Acoustics 2, no. 3 (September 22, 2020): 691–706. http://dx.doi.org/10.3390/acoustics2030037.
Повний текст джерелаDuta, M. C., and M. B. Giles. "A three-dimensional hybrid finite element/spectral analysis of noise radiation from turbofan inlets." Journal of Sound and Vibration 296, no. 3 (September 2006): 623–42. http://dx.doi.org/10.1016/j.jsv.2006.03.006.
Повний текст джерелаДисертації з теми "Turbofan intake noise radiation"
Ulusoy, Yavuz Barbaros. "Frequency Domain Computation Of Turbofan Exhaust Noise Radiation." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607234/index.pdf.
Повний текст джерелаKewin, Matthew Fergus. "Acoustic liner optimisation and noise propagation through turbofan engine intake ducts." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/366367/.
Повний текст джерелаDetwiler, Kevin P. "Reduced fan noise radiation from a supersonic inlet." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09192009-040457/.
Повний текст джерелаde, la Riva Diego Horacio. "Modeling of Herschel/Quincke-Liner Systems for the Control of Aft Fan Radiation in Turbofan Engines." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/28080.
Повний текст джерелаPh. D.
Marchner, Philippe. "Non-reflecting boundary conditions and domain decomposition methods for industrial flow acoustics." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0094.
Повний текст джерелаThis PhD project is devoted to non-overlapping Schwarz domain decomposition methods for the resolution of high frequency flow acoustics problems of industrial relevance. Time-harmonic solvers are difficult to parallelize due to their high-oscillatory behaviour, and current solvers quickly reach an upper frequency limit dictated by the available computer memory. Non-overlapping Schwarz methods split the domain into subdomains at the continuous level and provide a suitable setting for distributed memory parallelization. The problem is solved iteratively on the interface unknowns, where the keystone for quick convergence relies on appropriate transmission conditions. The first part of this thesis is devoted to the design of transmission operators tailored to convected and heterogeneous time-harmonic wave propagation. To this end we study two non-reflecting boundary techniques that provide local approximations to the Dirichlet-to-Neumann operator. On the one hand, Absorbing Boundary Conditions are designed based on microlocal analysis and pseudodifferential calculus. On the other hand, the convected acoustic stability issue is addressed for Perfectly Matched Layers in convex domains with Lorentz transformation. The second part of this thesis describes how to adapt a generic domain decomposition framework to flow acoustics, and applies the newly designed transmission conditions to simple academic problems. We explain the relation between the non-overlapping Schwarz formulation and an algebraic block LU factorization of the problem. Finally we propose a parallel implementation of the method and show the benefit of the approach for the three-dimensional noise radiation of a high by-pass ratio turbofan engine intake
Mertens, Tanguy. "A new mapped infinite partition of unity method for convected acoustical radiation in infinite domains." Doctoral thesis, Universite Libre de Bruxelles, 2009. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210365.
Повний текст джерелаCette dissertation s’intéresse aux méthodes numériques dans le domaine de l’acoustique. Les propriétés acoustiques d’un produit sont devenues une part intégrante de la conception. En effet, de nos jours le bruit est perçu comme une nuisance par le consommateur et constitue un critère de vente. Il y a de plus des normes à respecter. Les méthodes numériques permettent de prédire la propagation sonore et constitue dès lors un outil de conception incontournable pour réduire le temps et les coûts de développement d’un produit.
Cette dissertation considère la propagation d’ondes acoustiques dans le domaine fréquentiel en tenant compte de la présence d’un écoulement. Nous pouvons citer comme application industrielle, le rayonnement d’une nacelle de réacteur d’avion. Le but de la thèse est de proposer une nouvelle méthode et démontrer ses performances par rapport aux méthodes actuellement utilisées (i.e. la méthode des éléments finis).
L’originalité du travail consiste à étendre la méthode de partition de l’unité polynomiale dans le cadre de la propagation acoustique convectée, pour des domaines extérieurs. La simulation acoustique dans des domaines de dimensions infinies est réalisée dans ce travail à l’aide d’un couplage entre éléments finis et éléments infinis.
La dissertation présente la formulation de la méthode pour des applications axisymétriques et tridimensionnelles et vérifie la méthode en comparant les résultats numériques obtenus avec des solutions analytiques pour des applications académiques (i.e. propagation dans un conduit, rayonnement d’un multipole, bruit émis par la vibration d’un piston rigide, etc.). Les performances de la méthode sont ensuite analysées. Des courbes de convergences illustrent à une fréquence donnée, la précision de la méthode en fonction du nombre d’inconnues. Tandis que des courbes de performances présentent le temps de calcul nécessaire pour obtenir une solution d’une précision donnée en fonction de la fréquence d’excitation. Ces études de performances montrent l’intérêt de la méthode présentée.
Le rayonnement d’un réacteur d’avion a été abordé dans le but de vérifier la méthode sur une application de type industriel. Les résultats illustrent la propagation pour une nacelle axisymétrique en tenant compte de l’écoulement et la présence de matériau absorbant dans la nacelle et compare les résultats obtenus avec la méthode proposée et ceux obtenus avec la méthode des éléments finis.
Les performances de la méthode de la partition de l’unité dans le cadre de la propagation convectée en domaines infinis sont présentées pour des applications académiques et de type industriel. Le travail effectué illustre l’intérêt d’utiliser des fonctions polynomiales d’ordre élevé ainsi que les avantages à enrichir l’approximation localement afin d’améliorer la solution sans devoir créer un maillage plus fin.
Summary:
Environmental considerations are important in the design of many engineering systems and components. In particular, the environmental impact of noise is important over a very broad range of engineering applications and is increasingly perceived and regulated as an issue of occupational safety or health, or more simply as a public nuisance. The acoustic quality is then considered as a criterion in the product design process. Numerical prediction techniques allow to simulate vibro-acoustic responses. The use of such techniques reduces the development time and cost.
This dissertation focuses on acoustic convected radiation in outer domains such as it is the case for turbofan radiation. In the current thesis the mapped infinite partition of unity method is implemented within a coupled finite and infinite element model. This method allows to enrich the approximation with polynomial functions.
We present axisymmetric and three-dimensional formulations, verify and analyse the performance of the method. The verification compares computed results with the proposed method and analytical solutions for academic applications (i.e. duct propagation, multipole radiation, noise radiated by a vibrating rigid piston, etc.) .Performance analyses are performed with convergence curves plotting, for a given frequency, the accuracy of the computed solution with respect to the number of degrees of freedom or with performance curves, plotting the CPU time required to solve the application within a given accuracy, with respect to the excitation frequency. These performance analyses illustrate the interest of the mapped infinite partition of unity method.
We compute the radiation of an axisymmetric turbofan (convected radiation and acoustic treatments). The aim is to verify the method on an industrial application. We illustrate the radiation and compare the mapped infinite partition of unity results with finite element computations.
The dissertation presents the mapped partition of unity method as a computationally efficient method and illustrates its performances for academic as well as industrial applications. We suggest to use the method with high order polynomials and take the advantage of the method which allows to locally enrich the approximation. This last point improves the accuracy of the solution and prevent from creating a finer mesh.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Книги з теми "Turbofan intake noise radiation"
Center, NASA Glenn Research, ed. Turbofan noise propagation and radiation at high frequencies. [Cleveland, Ohio]: National Aeronautics and Space Administration, Glenn Research Center, 2003.
Знайти повний текст джерелаComputation of noise radiation from turbofans: A parametric study. [Washington, D.C.?]: National Aeronautics and Space Administration, 1995.
Знайти повний текст джерелаComputation of noise radiation from turbofans: A parametric study. [Washington, D.C.?]: National Aeronautics and Space Administration, 1995.
Знайти повний текст джерелаFan noise prediction system development: Source/radiation field coupling and workstation conversion for the acoustic radiation code. [Washington, DC: National Aeronautics and Space Administration, 1993.
Знайти повний текст джерелаТези доповідей конференцій з теми "Turbofan intake noise radiation"
Zhang, Xinwen, Changchun Liu, and Bing Lin. "Prediction of Engine Intake Noise with Discontinuous Least-Square Finite Element Method in Frequency Domain Acoustics." In GPPS Xi'an21. GPPS, 2022. http://dx.doi.org/10.33737/gpps21-tc-195.
Повний текст джерелаDoherty, Martin, and Howoong Namgoong. "Impact of Turbofan Intake Distortion on Fan Noise Propagation and Generation." In 22nd AIAA/CEAS Aeroacoustics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2016. http://dx.doi.org/10.2514/6.2016-2841.
Повний текст джерелаXiong, Lei, Rie Sugimoto, and Erika Quaranta. "Effects of turbofan engine intake droop and length on fan tone noise." In 25th AIAA/CEAS Aeroacoustics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2019. http://dx.doi.org/10.2514/6.2019-2581.
Повний текст джерелаAit-Ali-Yahia, D., D. Stanescu, W. Habashi, and M. Robichaud. "Axisymmetric computations of fan noise radiation from turbofan inlets." In 37th Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-483.
Повний текст джерелаCasalino, Damiano, and Mattia Barbarino. "Turbofan Aft Noise Radiation: Progress Towards a Realistic CAA Simulation." In 14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-2882.
Повний текст джерелаMincu, Daniel-Ciprian, Eric Manoha, Gabriel Reboul, Stephane Redonnet, and Sebastian Pascal. "Numerical simulation of broadband aft fan noise radiation for turbofan with scarfed nozzle." In 17th AIAA/CEAS Aeroacoustics Conference (32nd AIAA Aeroacoustics Conference). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-2941.
Повний текст джерелаOzyoruk, Yusuf, and Stephane Lidoine. "Numerical Analysis of Noise Radiation from a Turbofan Exhaust Cowl with an Extended Liner in Flight." In 14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-2880.
Повний текст джерелаSugimoto, Rie, Alexander O. James, Alan McAlpine, and Richard J. Astley. "CFD/CAA coupling for the prediction of fan tone noise propagation and radiation through a drooped intake." In 28th AIAA/CEAS Aeroacoustics 2022 Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2022. http://dx.doi.org/10.2514/6.2022-3100.
Повний текст джерелаRousselot, S., D. Truffi, G. Doulgeris, S. Mistry, V. Pachidis, and P. Pilidis. "Generation of a Quasi 3-D Map of a Half-Embedded Ultra High Bypass Ratio Turbofan Intake on the Wing of a Broad Delta Wing Airframe." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-51008.
Повний текст джерелаB., RajaGopal, Santosh Gannu, Abhilash M, GS Krishnamurthy, and Rod Giles. "Pass-by Noise Prediction of a Vehicle." In Small Engine Technology Conference & Exposition. 10-2 Gobancho, Chiyoda-ku, Tokyo, Japan: Society of Automotive Engineers of Japan, 2020. http://dx.doi.org/10.4271/2019-32-0593.
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