Results 21 to 30 of about 595 (186)

Applicability of Aeroacoustic Scaling Laws of Leading Edge Serrations for Rotating Applications

Acoustics, 2020
The dominant aeroacoustic mechanisms of serrated leading edges, subjected to highly turbulent inflow conditions, can be compressed to spanwise decorrelation effects as well as effects of destructive interference.
Till M. Biedermann, Pasquale Czeckay, Nils Hintzen, Frank Kameier, C. O. Paschereit   +4 more
doaj   +1 more source

Assessment of Optimization Methods for Aeroacoustic Prediction of Trailing-Edge Interaction Noise in Axisymmetric Jets

Mathematics, 2021
Our concern in this paper is in the fine-tuning of the arbitrary parameters within the upstream turbulence structure for the acoustic spectrum of a rapid-distortion theory (RDT)-based model of trailing-edge noise.
Sarah Stirrat, Mohammed Z. Afsar, Edmondo Minisci   +2 more
doaj   +1 more source

Numerical evaluation of the aerodynamic and noise characteristics of an axial flow fan in a large aeroacoustic wind tunnel

Kongqi donglixue xuebao
This study numerically investigates the flow field and aerodynamic performance of the axial fan system in the 4 m × 3 m low-turbulent and aeroacoustic wind tunnel of Beihang University (BHAW).
Peiqing LIU, Peiqing LIU, Yue CHEN, Yue CHEN, Jin ZHANG, Jin ZHANG, Qiulin QU, Qiulin QU, Hao GUO, Hao GUO, Lichuan MA, Lichuan MA   +11 more
doaj   +1 more source

Computational aeroacoustics of human phonation

EPJ Web of Conferences, 2013
The current paper presents a CFD model of flow past vibrating vocal folds coupled to an acoustic solver, which calculates the sound sources from the flow field in a hybrid approach.
Šidlof P., Zörner S.
doaj   +1 more source

Production, Properties, and Applications of Surface‐Crusted Lightweight Metals in Wind Turbines

Advanced Engineering Materials, Volume 28, Issue 11, 3 June 2026.
The figure describes an application of surface‐crusted lightweight metals (cellular aluminium materials) for blades in small vertical wind turbines. This application has been analyzed with regard to production technology, aerodynamic design, ecological impact, and production energy requirements.
Iva Nova, Karel Frana, Milan Jelínek
wiley   +1 more source

Prediction of Aircraft Surface Noise in Supersonic Cruise State

Aerospace, 2023
The aerodynamic noise of an aircraft leads to vibration fatigue damage to structures. Herein, a prediction method for aircraft surface noise under the comprehensive effect of mixed acoustic sources during flight, primarily surface aerodynamic, air intake,
Xiaoguang Zhang, Huixue Dang, Bin Li
doaj   +1 more source

Shock‐Assisted Flow Control System in Convergent‐Divergent Nozzle: A Numerical Study on Unconventional Protuberance With Different Geometry

Engineering Reports, Volume 8, Issue 5, May 2026.
A numerical investigation using 3D RANS simulations demonstrates significant effects of protuberance geometry—cubic, cylindrical, spherical, and conical—on shock‐induced thrust vectoring in supersonic nozzles. Cubic protuberances provide the maximum jet deflection (˜2°) with negligible thrust reduction.
Mohammadreza Soufivand, Davood Mokhtari, Mohammad Hojaji, Annunziata D'Orazio   +3 more
wiley   +1 more source

Multi-objective Optimization of Horizontal Axis Wind Turbine Arrays: Impact of Spacing Distance on Noise Generation and Power Efficiency [PDF]

Journal of Applied Fluid Mechanics
This work explores the effect of spacing between co-axially positioned Horizontal Axis Wind Turbines (HAWTs) on their aerodynamic behavior and acoustic emissions under uniform inflow conditions. The aerodynamic simulations employ the Actuator Disk Method
A. Amoura, S. Khelladi, A. Smaili, M. N. Hamlaoui, S. Kouidri   +4 more
doaj   +1 more source

The Methodological and Experimental Research on the Identification and Localization of Turbomachinery Rotating Sound Source

Energies, 2022
The localization and quantification of turbomachinery rotating sound sources is an important challenge in the field of aeroacoustics. In order to compensate the motion of a rotating sound source, a rotating beamforming technique is developed and applied ...
Kunbo Xu, Yun Shi, Weiyang Qiao, Zhirong Wang   +3 more
doaj   +1 more source

Coupled Fluid–Structure–Acoustic Analysis of Flow‐Induced Noise Control Using an Elastic Baffle in a Micro Channel

Energy Science &Engineering, Volume 14, Issue 5, Page 2571-2582, May 2026.
This research explores how fluid flow, structural movement, and sound interact in an elastic baffle system. Using a numerical approach based on the finite element method, the study analyzes how noise and vibrations change with different baffle configurations. The findings reveal that shortening the baffle by half reduces noise transmission by 9%, while
Tohid Adibi, Seyed Esmail Razavi, Shams Forruque Ahmed, Khashayar Fardnia, Aydin Qheydarpoor, Hammad Alotaibi   +5 more
wiley   +1 more source