Relevant bibliographies by topics / Fluid-structure interaction and aeroacoustics

Academic literature on the topic 'Fluid-structure interaction and aeroacoustics'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Fluid-structure interaction and aeroacoustics"

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Schäfer, Frank, Thomas Uffinger, Stefan Becker, Jens Grabinger, and Manfred Kaltenbacher. "Fluid‐structure interaction and computational aeroacoustics of the flow past a thin flexible structure." Journal of the Acoustical Society of America 123, no. 5 (May 2008): 3570. http://dx.doi.org/10.1121/1.2934641.

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Jansson, Johan. "Adaptive stabilized finite element framework for simulation of vocal fold turbulent fluid-structure interaction and towards aeroacoustics." Journal of the Acoustical Society of America 133, no. 5 (May 2013): 3416. http://dx.doi.org/10.1121/1.4805976.

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Valášek, Jan, and Petr Sváček. "Aeroacoustic computation of fluid-structure interaction problems with low Mach numbers." EPJ Web of Conferences 180 (2018): 02113. http://dx.doi.org/10.1051/epjconf/201818002113.

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This contribution deals with the acoustic simulation of aerodynamical noise generated by a flow over an airfoil or by flow in a flexible channel. Since the considered flow has low Mach number the hybrid approach of acoustic analogies can be applied here with benefits. The fluid-structure-acoustic interaction problem is generally described as a quite complicated problem comprising of three different physical fields - the vibration of the elastic body, the unsteady fluid flow and the acoustics together with mutual couplings. The fluid flow in time dependent domain is governed by the incompressible Navier-Stokes equations in arbitrary Langrangian-Eulerian formulation and the elastic structure is modelled by the means of linear elasticity theory. The Lighthill analogy and acoustic perturbation equation (APE) is considered to describe the sound propagation. The simulation of fluid-structure (FSI) interaction and acoustic field is implemented using the FEM in an in-house solver. The sound sources computed from FSI results are analyzed and within sound propagation simulation the perfectly matched layer technique is used. In the end the results of Lighthill and APE analogy are compared.
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You, Young H., Deokhwan Na, and Sung N. Jung. "Data Transfer Schemes in Rotorcraft Fluid-Structure Interaction Predictions." International Journal of Aerospace Engineering 2018 (2018): 1–15. http://dx.doi.org/10.1155/2018/3426237.

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For a CFD (computation fluid dynamics)/CSD (computational structural dynamics) coupling, appropriate data exchange strategy is required for the successful operation of the coupling computation, due to fundamental differences between CFD and CSD analyses. This study aims at evaluating various data transfer schemes of a loose CFD/CSD coupling algorithm to validate the higher harmonic control aeroacoustic rotor test (HART) data in descending flight. Three different data transfer methods in relation to the time domain airloads are considered. The first (method 1) uses random data selection matched with the timewise resolution of the CSD analysis whereas the last (method 2) adopts a harmonic filter to the original signals in CFD and CSD analyses. The second (method 3) is a mixture of the two methods. All methods lead to convergent solutions after a few cycles of coupling iterations are marched. The final converged solutions for each of the data transfer methods are correlated with the measured HART data. It is found that both method 1 and method 2 exhibit nearly identical results on airloads and blade motions leading to excellent correlations with the measured data while the agreement is less satisfactory with method 3. The reason of the discrepancy is identified and discussed illustrating CFD-/CSD-coupled aeromechanics predictions.
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Valášek, Jan, and Petr Sváček. "Aeroacoustic computation of fluid-structure interaction problems with low Mach numbers." EPJ Web of Conferences 180 (2018): 02113. http://dx.doi.org/10.1051/epjconf/201817002113.

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Heydari, Morteza, Hamid Sadat, and Rajneesh Singh. "A Computational Study on the Aeroacoustics of a Multi-Rotor Unmanned Aerial System." Applied Sciences 11, no. 20 (October 18, 2021): 9732. http://dx.doi.org/10.3390/app11209732.

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The noise generated by a quadrotor biplane unmanned aerial system (UAS) is studied computationally for various conditions in terms of the UAS pitch angle, propellers rotating velocity (RPM), and the UAS speed to understand the physics involved in its aeroacoustics and structure-borne noise. The k-ω SST turbulence model and Ffowcs Williams-Hawkings equations are used to solve the flow and acoustics fields, respectively. The sound pressure level is measured using a circular array of microphones positioned around the UAS, as well as at specific locations on its structure. The local flow is studied to detect the noise sources and evaluate the pressure fluctuation on the UAS surface. This study found that the UAS noise increases with pitch angle and the propellers’ rotating velocity, but it shows an irregular trend with the vehicle speed. The major source of the UAS noise is from its propellers and their interactions with each other at small pitch angle. The propeller and CRC-3 structure interaction contributes to the noise at large pitch angle. The results also showed that the propellers and structure of the UAS impose unsteadiness on each other through a two-way mechanism, resulting in structure-born noises which depend on the propeller RPM, velocity and pitch angle.
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Zhong, Siyang, and Xin Zhang. "A generalized sound extrapolation method for turbulent flows." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 474, no. 2210 (February 2018): 20170614. http://dx.doi.org/10.1098/rspa.2017.0614.

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Sound extrapolation methods are often used to compute acoustic far-field directivities using near-field flow data in aeroacoustics applications. The results may be erroneous if the volume integrals are neglected (to save computational cost), while non-acoustic fluctuations are collected on the integration surfaces. In this work, we develop a new sound extrapolation method based on an acoustic analogy using Taylor’s hypothesis (Taylor 1938 Proc. R. Soc. Lon. A 164 , 476–490. ( doi:10.1098/rspa.1938.0032 )). Typically, a convection operator is used to filter out the acoustically inefficient components in the turbulent flows, and an acoustics dominant indirect variable D c p ′ is solved. The sound pressure p ′ at the far field is computed from D c p ′ based on the asymptotic properties of the Green’s function. Validations results for benchmark problems with well-defined sources match well with the exact solutions. For aeroacoustics applications: the sound predictions by the aerofoil–gust interaction are close to those by an earlier method specially developed to remove the effect of vortical fluctuations (Zhong & Zhang 2017 J. Fluid Mech. 820 , 424–450. ( doi:10.1017/jfm.2017.219 )); for the case of vortex shedding noise from a cylinder, the off-body predictions by the proposed method match well with the on-body Ffowcs-Williams and Hawkings result; different integration surfaces yield close predictions (of both spectra and far-field directivities) for a co-flowing jet case using an established direct numerical simulation database. The results suggest that the method may be a potential candidate for sound projection in aeroacoustics applications.
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Nusser, Katrin, and Stefan Becker. "Numerical investigation of the fluid structure acoustics interaction on a simplified car model." Acta Acustica 5 (2021): 22. http://dx.doi.org/10.1051/aacus/2021014.

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Part of vehicle interior noise is caused by the complex turbulent flow field behind the a-pillar and side mirror. It excites the structure of the side window, which radiates noise into the interior. Both aerodynamic pressure excitation and acoustic sound sources in the flow play an important role. In this work, the influence of both excitation mechanisms is investigated numerically in a hybrid simulation on a simplified car geometry. The generic model allows for an exact definition of boundary conditions and good reproducibility of simulation results. An incompressible Large-Eddy-Simulation (LES) of the flow is conducted, from which acoustic source terms within the flow field and transient fluid forces acting on the surface of the side window are extracted. This data is used in a coupled vibroacoustic and aeroacoustic simulation of the structure and passenger cabin of the vehicle. A finite element (FE) approach is used for the simulations and detailed modeling of the structure and the influence of interior absorption properties is emphasized. The computed excitation on the side window and the interior noise levels are successfully validated by using experimental data. The importance and contribution of both aerodynamic and acoustic pressure excitation to the interior sound level are determined.
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Barnard, Andrew, and Daniel A. Russell. "The graduate program in acoustics at Penn State." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A124. http://dx.doi.org/10.1121/10.0015762.

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The Graduate Program in Acoustics at Penn State offers graduate degrees (M.Eng., M.S., Ph.D.) in Acoustics, with courses and research opportunities in a wide variety of subfields. Our 820 alumni are employed around the world in a wide variety of military and government labs, academic institutions, consulting firms, and consumer audio and related industries. Our 40+ faculty from several disciplines conduct research and teach courses in structural acoustics, nonlinear acoustics, architectural acoustics, signal processing, aeroacoustics, biomedical ultrasound, transducers, computational acoustics, noise and vibration control, acoustic metamaterials, psychoacoustics, and underwater acoustics. Course offerings include fundamentals of acoustics and vibration, electroacoustic transducers, signal processing, acoustics in fluid media, sound and structure interaction, digital signal processing, experimental techniques, acoustic measurements and data analysis, ocean acoustics, architectural acoustics, noise control engineering, nonlinear acoustics, outdoor sound propagation, computational acoustics, biomedical ultrasound, flow induced noise, spatial sound and three-dimensional audio, and the acoustics of musical instruments. This poster highlights faculty research areas, laboratory facilities, student demographics, successful graduates, and recent enrollment and employment trends for the Graduate Program in Acoustics at Penn State.
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Chen, Li, Yang Yu, and Guo Xiang Hou. "Flow-Induced Noise Radiation from the Rotational Bodies Based on Fluid Mechanics Using Hybrid Immersed Boundary Lattice-Boltzmann/FW-H Method." Applied Mechanics and Materials 345 (August 2013): 345–48. http://dx.doi.org/10.4028/www.scientific.net/amm.345.345.

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A novel study of the simulations of the flow-induced noise from the moving boundary objects using the hybrid immersed boundary lattice-Boltzmann method (IB-LBM), which is the modern useful numerical method of fluid mechanics, on the Ffowcs Williams-Hawkings (FW-H) equation is carried out. The permeable surface FW-H method has been demonstrated an effective technique of the far-field noise predication, because of its complete theories and successful applications in aeroacoustics. It usually need the information of the field near sound source. Therefore, we also adopt the effective and widely used IB-LBM to treat the interaction of the moving boundaries and the fluid, in order to simulate the near-field accurately. Some simulations are shown to test the hybrid method, including the rotational cylinder. The results prove that the hybrid IB-LBM/FW-H method can simulate the large field problems of the flow-induced noise effectively and accurately.
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Dissertations / Theses on the topic "Fluid-structure interaction and aeroacoustics"

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Heminger, Michael Alan. "Dynamic Grid Motion in a High-Order Computational Aeroacoustic Solver." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1272550725.

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Rejent, Andrew. "Experimental Study of the Flow and Acoustic Characteristics of a High-Bypass Coaxial Nozzle with Pylon Bifurcations." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250272655.

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鄧兆強 and Shiu-keung Tang. "The aeroacoustics of free shear layers and vortex interactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1992. http://hub.hku.hk/bib/B31233235.

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Altstadt, Eberhard, Helmar Carl, and Rainer Weiß. "Fluid-Structure Interaction Investigations for Pipelines." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-28993.

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The influence of the fluid-structure interaction on the magnitude fo the loads on pipe walls and support structures is not yet completely understood. In case of a dynamic load caused by a pressure wave, the stresses in pipe walls, especially in bends, are different from the static case.
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Plessas, Spyridon D. "Fluid-structure interaction in composite structures." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/41432.

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Approved for public release; distribution is unlimited.
In this research, dynamic characteristics of polymer composite beam and plate structures were studied when the structures were in contact with water. The effect of fluid-structure interaction (FSI) on natural frequencies, mode shapes, and dynamic responses was examined for polymer composite structures using multiphysics-based computational techniques. Composite structures were modeled using the finite element method. The fluid was modeled as an acoustic medium using the cellular automata technique. Both techniques were coupled so that both fluid and structure could interact bi-directionally. In order to make the coupling easier, the beam and plate finite elements have only displacement degrees of freedom but no rotational degrees of freedom. The fast Fourier transform (FFT) technique was applied to the transient responses of the composite structures with and without FSI, respectively, so that the effect of FSI can be examined by comparing the two results. The study showed that the effect of FSI is significant on dynamic properties of polymer composite structures. Some previous experimental observations were confirmed using the results from the computer simulations, which also enhanced understanding the effect of FSI on dynamic responses of composite structures.
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Randall, Richard John. "Fluid-structure interaction of submerged shells." Thesis, Brunel University, 1990. http://bura.brunel.ac.uk/handle/2438/5446.

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A general three-dimensional hydroelasticity theory for the evaluation of responses has been adapted to formulate hydrodynamic coefficients for submerged shell-type structures. The derivation of the theory has been presented and is placed in context with other methods of analysis. The ability of this form of analysis to offer an insight into the physical behaviour of practical systems is demonstrated. The influence of external boundaries and fluid viscosity was considered separately using a flexible cylinder as the model. When the surrounding fluid is water, viscosity was assessed to be significant for slender structural members and flexible pipes and in situations where the clearance to an outer casing was slight. To validate the three-dimensional hydroelasticity theory, predictions of resonance frequencies and mode shapes were compared, with measured data from trials undertaken in enclosed tanks. These data exhibited differences due to the position of the test structures in relation to free and fixed boundaries. The rationale of the testing programme and practical considerations of instrumentation, capture and storage of data are described in detail. At first sight a relatively unsophisticated analytical method appeared to offer better correlation with the measured data than the hydroelastic solution. This impression was mistaken, the agreement was merely fortuitous as only the hydroelastic approach is capable of reproducing-the trends recorded in the experiments. The significance of an accurate dynamic analysis using finite elements and the influence of physical factors such as buoyancy on the predicted results are also examined.
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Giannopapa, Christina-Grigoria. "Fluid structure interaction in flexible vessels." Thesis, King's College London (University of London), 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413425.

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Wright, Stewart Andrew. "Aspects of unsteady fluid-structure interaction." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621939.

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Altstadt, Eberhard, Helmar Carl, and Rainer Weiß. "Fluid-Structure Interaction Investigations for Pipelines." Forschungszentrum Rossendorf, 2003. https://hzdr.qucosa.de/id/qucosa%3A21726.

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The influence of the fluid-structure interaction on the magnitude fo the loads on pipe walls and support structures is not yet completely understood. In case of a dynamic load caused by a pressure wave, the stresses in pipe walls, especially in bends, are different from the static case.
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Holder, Justin. "Fluid Structure Interaction in Compressible Flows." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin159584692691518.

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Books on the topic "Fluid-structure interaction and aeroacoustics"

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1941-, Chakrabarti Subrata K., and Brebbia C. A, eds. Fluid structure interaction. Southampton: WIT Press, 2001.

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Bungartz, Hans-Joachim, and Michael Schäfer, eds. Fluid-Structure Interaction. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-34596-5.

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Sigrist, Jean-François. Fluid-Structure Interaction. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118927762.

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International Conference on Fluid Structure Interaction (2nd 2003 Cadiz, Spain). Fluid structure interaction II. Southampton: WIT, 2003.

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International Conference on Fluid Structure Interaction (6th 2011 Orlando, Fla.). Fluid structure interaction VI. Edited by Kassab, A. (Alain J.). Southampton, UK: WIT Press, 2011.

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Canary Islands) International Conference on Fluid Structure Interaction (7th 2013 Las Palmas. Fluid structure interaction VII. Edited by Brebbia C. A, Rodríguez G. R, and Wessex Institute of Technology. Southampton: WIT Press, 2013.

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International Conference on Fluid Structure Interaction (5th 2009 Chersonēsos, Crete, Greece). Fluid structure interaction V. Edited by Brebbia C. A and Wessex Institute of Technology. Southampton: WIT, 2009.

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Bazilevs, Yuri, Kenji Takizawa, and Tayfun E. Tezduyar. Computational Fluid-Structure Interaction. Chichester, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118483565.

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Bungartz, Hans-Joachim, Miriam Mehl, and Michael Schäfer, eds. Fluid Structure Interaction II. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14206-2.

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Braza, Marianna, Alessandro Bottaro, and Mark Thompson, eds. Advances in Fluid-Structure Interaction. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-27386-0.

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Book chapters on the topic "Fluid-structure interaction and aeroacoustics"

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Peake, Nigel. "The Aeroacoustics of the Owl." In Fluid-Structure-Sound Interactions and Control, 17–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-48868-3_2.

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Liu, Xuliang, and Shuhai Zhang. "A Class of High Order Compact Schemes with Good Spectral Resolution for Aeroacoustics." In Fluid-Structure-Sound Interactions and Control, 239–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40371-2_35.

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Zhang, Shuhai, Xuliang Liu, Hanxin Zhang, and Chi-Wang Shu. "High Order and High Resolution Numerical Schemes for Computational Aeroacoustics and Their Applications." In Fluid-Structure-Sound Interactions and Control, 27–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-48868-3_4.

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Talboys, Edward, Thomas F. Geyer, Florian Prüfer, and Christoph Brücker. "The Aeroacoustic Effect of Different Inter-Spaced Self-oscillating Passive Trailing Edge Flaplets." In Fluid-Structure-Sound Interactions and Control, 161–66. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4960-5_25.

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Monfaredi, M., X. S. Trompoukis, K. T. Tsiakas, and K. C. Giannakoglou. "Continuous Adjoint for Aerodynamic-Aeroacoustic Optimization Based on the Ffowcs Williams and Hawkings Analogy." In Fluid-Structure-Sound Interactions and Control, 329–34. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4960-5_49.

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Wang, Xunnian, Jun Zhang, Peng Chen, and Zhengwu Chen. "An Introduction of CARDC 5.5 m × 4 m Anechoic Wind Tunnel and the Aeroacoustic Tests." In Fluid-Structure-Sound Interactions and Control, 325–30. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7542-1_49.

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Dolejší, Vít, and Miloslav Feistauer. "Fluid-Structure Interaction." In Discontinuous Galerkin Method, 521–51. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19267-3_10.

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Doyle, James F. "Structure-Fluid Interaction." In Wave Propagation in Structures, 243–74. New York, NY: Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-1832-6_8.

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Kleinstreuer, Clement. "Fluid–Structure Interaction." In Fluid Mechanics and Its Applications, 435–79. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-8670-0_8.

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Souli, Mhamed. "Fluid-Structure Interaction." In Arbitrary Lagrangian-Eulerian and Fluid-Structure Interaction, 51–108. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118557884.ch2.

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Conference papers on the topic "Fluid-structure interaction and aeroacoustics"

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Wu, Di, Garret C. Y. Lam, and Randolph C. Leung. "An Attempt to Reduce Airfoil Tonal Noise Using Fluid-Structure Interaction." In 2018 AIAA/CEAS Aeroacoustics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-3790.

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Richard, Julien, and Franck Nicoud. "Effect of the Fluid Structure Interaction on the Aeroacoustic Instabilities of Solid Rocket Motors." In 17th AIAA/CEAS Aeroacoustics Conference (32nd AIAA Aeroacoustics Conference). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-2816.

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Becker, Stefan, Frank Schaefer, Stefan Mueller, Thomas Uffinger, Jens Grabinger, and Manfred Kaltenbacher. "Simulation and Experiments of the Fluid-Structure-Acoustic Interaction of a Flexible Structure in the Wake of a Square Cylinder." In 14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-3058.

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Glegg, Stewart A., William J. Devenport, Nicholas J. Molinaro, and William N. Alexander. "Proper Orthogonal Decomposition and its Use in the Analysis of Fluid Structure Interaction Noise." In 2018 AIAA/CEAS Aeroacoustics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-3787.

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Mueller, Stefan, Stefan Becker, Thomas Biermeier, Frank Schaefer, Jens Grabinger, Manfred Kaltenbacher, and Denis Blanchet. "Investigation of the Fluid-Structure Interaction and the Radiated Sound of Different Plate Structures Depending on Various Inflows." In 15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-3390.

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Maunus, Jeremy, Sheryl Grace, and Douglas Sondak. "Effect of Rotor Wake Structure on Fan Interaction Noise." In 16th AIAA/CEAS Aeroacoustics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-3746.

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Fan, Ka Heng, R. Leung, and Garret Lam. "A Time-Domain Analysis for Aeroacoustics-Structure Interaction of Flexible Panel." In 19th AIAA/CEAS Aeroacoustics Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-2133.

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Olausson, Martin, Richard Avella´n, Niklas So¨rman, Filip Rudebeck, and Lars-Erik Eriksson. "Aeroacoustics and Performance Modeling of a Counter-Rotating Propfan." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22543.

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This paper presents a method for design and analysis of counter-rotating propfans with respect to performance and aeroacoustics. The preliminary design method generates the ideal optimum propeller design corrected for losses in terms of profile and compressibility drag. The propeller design is further analyzed by computational fluid dynamics, CFD, to calculate the performance and the deterministic interaction noise. The unsteady flow around the propellers is calculated using URANS such that only one blade per propeller needs to be discretized. The unsteady pressure distribution around the blades is integrated, using a Ffowcs Williams-Hawkings method, to an observer for noise evaluation. The results of the performance analysis, the CFD computations and the aeroacoustic analysis are compared with experimental data available from the nonproprietary reports regarding the counter-rotating propellers developed in the 1980s.
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Barabas, Botond, Friedrich-Karl Benra, Nico Petry, and Dieter Brillert. "Experimental Damping Behavior of Strongly Coupled Structure and Acoustic Modes of a Rotating Disk With Side Cavities." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-58782.

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Abstract High cycle fatigue is a continuous research topic within the turbomachine community. One field of the investigations is the fluid-structure interaction of 2-D impellers, which can be simplified as disks with their surrounding side cavities. In modern machines the pressure ratios tend to increase along with pressure fluctuations and the excitation potential on the impellers. The vibrational interactions between side cavities, filled with high pressure fluid, and the disk structure play an important role in machine design. However, they are not fully understood, yet. Vibrations at frequencies that have been uncritical at lower pressure levels could become critical at higher pressure levels. Additionally, coupling effects between fluid and structure are becoming stronger at higher fluid densities. For a safe and reliable design, the excitation and the damping mechanism of coupled modes has to be better understood. This paper summarizes the test rig setup and focuses on one of the main findings of an extensive experimental research project, which investigated the fluid-structure interaction of a disk with side cavities, at the University of Duisburg-Essen. The focus lays on the damping behavior of strongly coupled acoustic and structure modes. Measurement results gathered at the aeroacoustic test rig are presented. The results show the influence of fluid pressure variations on the damping behavior of acoustic modes. Therefore, the response functions of some selected acoustic modes are evaluated with the half-width method. Compared to the weakly coupled structure mode, the damping of the strongly coupled structure mode is some orders higher at atmospheric pressure conditions. The damping ratio decreases with an increasing pressure level, however still remains some orders higher, than the damping of weakly coupled structure modes.
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Zuo, Zhifeng, and Hiroshi Maekawa. "Application of a High-Resolution Compact Finite Difference Method to Computational Aeroacoustics of Compressible Flows." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-15009.

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Abstract:
WCNS is an efficient high-resolution nonlinear scheme for solving flow-fields including discontinuity. In the present paper, a two-dimensional, unsteady, compressible flow field produced by the interaction between a strong planar shock wave and a strong vortex are simulated numerically using WCNS. The simulation shows the effects of the vortex on a planar shock and the production of acoustic waves by the shock-vortex interaction. At the early times of interaction, the shock wave is perturbed by the vortex and a precursor is produced; with the shock wave emerges from the vortex flow field, a Mach structure was generated and the secondary acoustic wave was formed by the interaction of the reflected shock (MR2) with the precursor. Both components of acoustic wave (the precursor and the second sound wave) propagate radially and have a quadrupolar nature. By this simulation, the ability of WCNS for computational aeroacoustic problems is confirmed.
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Reports on the topic "Fluid-structure interaction and aeroacoustics"

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Benaroya, Haym, and Timothy Wei. Modeling Fluid Structure Interaction. Fort Belvoir, VA: Defense Technical Information Center, September 2000. http://dx.doi.org/10.21236/ada382782.

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Isaac, Daron, and Michael Iverson. Automated Fluid-Structure Interaction Analysis. Fort Belvoir, VA: Defense Technical Information Center, February 2003. http://dx.doi.org/10.21236/ada435321.

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3

Barone, Matthew Franklin, Irina Kalashnikova, Daniel Joseph Segalman, and Matthew Robert Brake. Reduced order modeling of fluid/structure interaction. Office of Scientific and Technical Information (OSTI), November 2009. http://dx.doi.org/10.2172/974411.

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4

Wood, Stephen L., and Ralf Deiterding. Shock-driven fluid-structure interaction for civil design. Office of Scientific and Technical Information (OSTI), November 2011. http://dx.doi.org/10.2172/1041422.

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5

Schroeder, Erwin A. Infinite Elements for Three-Dimensional Fluid-Structure Interaction Problems. Fort Belvoir, VA: Defense Technical Information Center, November 1987. http://dx.doi.org/10.21236/ada189462.

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Barone, Matthew Franklin, and Jeffrey L. Payne. Methods for simulation-based analysis of fluid-structure interaction. Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/875605.

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Tezduyar, Tayfun E. Multiscale and Sequential Coupling Techniques for Fluid-Structure Interaction Computations. Fort Belvoir, VA: Defense Technical Information Center, October 2012. http://dx.doi.org/10.21236/ada585768.

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Liszka, Tadeusz J., C. A. Duarte, and O. P. Hamzeh. Hp-Meshless Cloud Method for Dynamic Fracture in Fluid Structure Interaction. Fort Belvoir, VA: Defense Technical Information Center, March 2000. http://dx.doi.org/10.21236/ada376673.

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Wang, Guanyi, Cezary Bojanowski, Akshay Dave, David Jaluvka, Erik Wilson, and Lin-wen Hu. MITR Low-Enriched Uranium Conversion Fluid-Structure Interaction Preliminary Design Verification. Office of Scientific and Technical Information (OSTI), July 2021. http://dx.doi.org/10.2172/1809226.

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Schwiebert, Kyle, Qi Tang, and Julian Andrej. A Higher Order, Stable Partitioned Scheme for Fluid-Structure Interaction Problems. Office of Scientific and Technical Information (OSTI), July 2022. http://dx.doi.org/10.2172/1879331.

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