Results 1 to 10 of about 11,915 (202)
Fingertip tactile sensation via piezoelectric micromachined ultrasonic transducers with an amplified interface [PDF]
Scientific ReportsTactile devices are often used in the field of robotics; however, the development of compact high-resolution tactile devices remains challenging. In this study, we developed a haptic device for force presentation using a DC motor and a tactile sensation ...
Junji Sone
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Anatomical Determinants of Tracheal Breathing Sounds: A Computational Study of Airway Narrowing and Obstructive Sleep Apnea [PDF]
DiagnosticsBackground: Tracheal breathing sounds (TBS) have demonstrated strong potential as a non-invasive, wakefulness-based diagnostic tool for obstructive sleep apnea (OSA); yet the relationship between specific upper airway anatomical features and the ...
Walid Ashraf +2 more
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Modelling of Flow Characteristics of Main Rotor with Elliptical Root Section in Hover Mode [PDF]
E3S Web of Conferences, 2023 The modelling of a helicopter main rotor flow field in hover regime is being considered. The aerodynamic and aeroacoustics characteristics of two rotor models with different blade root geometries are compared.
Kusyumov Sergey +4 more
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Free and Non-Free Vortex Design for Axial Fans with Circumferential Sweep through CFD Techniques [PDF]
Journal of Applied Fluid Mechanics, 2022 The sound generated by axial flow fans has become increasingly important in several industrial areas. These devices represent considerable noise sources that must be considered from the design stage. The scope of this research work is to present an axial
T. M. Arispe Angulo +4 more
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Acoustic Experimental Technology for Aircraft Nacelle Liner
Aerospace, 2023 An aircraft nacelle acoustic liner is a key mean of aircraft noise reduction. The success of its design depends strongly on the development of experimental technology, which is generally divided into two stages: impedance eduction and the modal ...
Qun Yan +5 more
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Fluids, 2023 This paper addresses one of the major obstacles arising in the high-fidelity scale-resolving simulations of turbulent flows inside ducts with the walls covered by acoustic liners in order to attenuate the sound radiated from the duct.
Mikhail Shur +2 more
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Special Issue “Aeroacoustics and Noise Mitigation”
Aerospace, 2023 Aerospace, an open access journal operated by MDPI, recently released a Special Issue entitled “Aeroacoustics and Noise Mitigation” [...]
Hua-Dong Yao
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An Overview of Hybrid RANS–LES Models Developed for Industrial CFD
Applied Sciences, 2021 An overview of scale-resolving simulation (SRS) methods used in ANSYS Computational Fluid Dynamics (CFD) software is provided. The main challenges, especially when computing boundary layers in large eddy simulation (LES) mode, will be discussed.
Florian Menter +3 more
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Drones, 2022 In the present work a dynamic simulation model for a quadcopter drone is developed and validated through experimental flight data. The aerodynamics of the rotors is modeled with the blade element theory combined with the Peters and He dynamic wake model,
Felice Fruncillo +3 more
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The Parametric Aircraft Noise Analysis Module - status overview and recent applications [PDF]
, 2011 The German Aerospace Center (DLR) is investigating aircraft noise prediction and noise reduction capabilities. The Parametric Aircraft Noise Analysis Module (PANAM) is a fast prediction tool by the DLR Institute of Aerodynamics and Flow Technology to ...
Bertsch, Lothar +3 more
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