Towards the development of adaptive finite element methods for internal flow aeroacoustics
, 2013 We report the latest results obtained in the development of an adaptive finite element method for computational aeroacoustics (CAA). The new methodology is based on the General Galerkin (G2) method, which has been successfully used for the computation of
Hoffman, Johan, +2 more
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Numerical and Experimental Investigations of Axial Flow Fan with Bionic Forked Trailing Edge
Machines, 2023 To improve the performance of the aerodynamic properties and reduce the aerodynamic noise of an axial flow fan in the outdoor unit of an air conditioner, this study proposed a bionic forked trailing-edge structure inspired by the forked fish caudal fin ...
Zhong Liang +5 more
doaj +1 more source
Experimental Investigations on the Possibility to Apply the Corrugated Sheet Metal Used in the Past with Junkers Aircraft to Reduce Noise for Future European Aircraft. Other Noise Reduction Experiments for Future European Aircraft [PDF]
INCAS Bulletin, 2018 This paper shows that corrugated skin used in the past with Junkers aircraft to increase the fuselage and wing rigidity can lead to noise reduction for future European aircraft. If the pressure side of wing which is placed above the engine is corrugated,
Constantin SANDU +4 more
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Effect of Wavy Leading Edges on Airfoil Trailing-Edge Bluntness Noise
Aerospace, 2023 Among the several noise-generation mechanisms of airfoil self-noise, trailing-edge bluntness noise is an important noise source, which is caused by the vortex shedding at blunt trailing edges.
Yudi Xing +4 more
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Experimental aeroacoustics study on jet noise reduction using tangential air injection [PDF]
, 2011 PhDAircraft jet exhausts are a source of undesirable noise and continue to be an area of investigation driven by increasingly stringent regulation. The noise is produced by the unsteady mixing of the jet with the surrounding air and is dominated by the ...
Ahmad, Arsalan
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Cabin noise source ranking based on A320 flight test data in 'Aeroacoustics research in Europe: The CEAS-ASC report on 2012 highlights' [PDF]
, 2013 The Council of European Aerospace Societies (CEAS) Aeroacoustics Specialists Committee (ASC) supports and promotes the interests of the scientific and industrial aeroacoustics community on an European scale and European aeronautics activities ...
Olsman, W.F.J. +5 more
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Aerospace, 2023 The accurate prediction of helicopter rotor aerodynamics and aeroacoustics using Computational Fluid Dynamics (CFD) techniques still remains a challenge, as the over-dissipation of numerical schemes results in a higher diffusive rate of rotor wake and ...
Jinbin Fu, Yi Yuan, Luigi Vigevano
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Aerodynamics and aeroacoustics of flap side-edges [PDF]
, 2008 An experimental and computational investigation was carried out to determine the aerodynamics and aeroacoustics of a flap side-edge. A porous side-edge treatment was applied to the flap side-edge in an attempt to reduce airframe noise. Measurements taken
Angland, David
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Effect of rotor stiffness and lift offset on the aeroacoustics of a coaxial rotor in level flight [PDF]
, 2009 The acoustic characteristics of a twin contra-rotating coaxial rotor configuration with significant flapwise stiffness are investigated in steady forward flight.
Brown, R.E. +5 more
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Research progress on analysis and test methods of aircraft panel flutter
Hangkong gongcheng jinzhanAircraft panel flutter is a typical aeroelastic stability problem that occurs during supersonic flight，and is characterized by aerodynamic unilateral effects and significant structural and aerodynamic nonlinearity.
HE Chuanyang +4 more
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