Results 61 to 70 of about 6,303 (162)

Aerodynamic Performance Investigation of a Biomimetic‐Based Small‐Scale Horizontal‐Axis Wind Turbine: An Experimental Analysis

Wind Energy, Volume 28, Issue 7, July 2025.
ABSTRACT As the demand for power increases, installing small‐scale wind turbines can be an alternative solution. However, the main challenge for their implementation is the aerodynamic noise. With a view to minimizing noise, this study focuses on the performance investigation of a small‐scale horizontal‐axis wind turbine with NACA 4412 blades inspired ...
Hasan Muhommod Robin, Mim Mashrur Ahmed, Md. Rabiul Islam Sarker, Md. Nahid Hasan, Mahadi Hasan Masud   +4 more
wiley   +1 more source

Experimental Investigation of Rotor Noise in Reverse Non-Axial Inflow

Aerospace
This paper experimentally characterises the far-field noise emissions of a rotor operating in reverse non-axial inflow conditions. Specifically, experiments were undertaken at a range of rotor tilting angles and inflow velocities to investigate the ...
Liam Hanson, Leone Trascinelli, Bin Zang, Mahdi Azarpeyvand   +3 more
doaj   +1 more source

Microcylinder and Slot Combination for Flow Separation Control Over a Wind Turbine Airfoil

Wind Energy, Volume 28, Issue 7, July 2025.
ABSTRACT This study explores a novel passive flow control strategy combining a microcylinder and slot configuration to mitigate flow separation over an S809 wind turbine airfoil under stall conditions at a Reynolds number of 106. Numerical simulations are conducted using the Reynolds‐averaged Navier–Stokes (RANS) approach. The primary objectives are to
Sami Bouterra, Riyadh Belamadi, Abdelouaheb Djemili, Adrian Ilinca   +3 more
wiley   +1 more source

Influence of Gurney Flap and Leading-Edge/Trailing-Edge Flaps on the Stall Characteristics and Aeroacoustic Performance of Airfoils

Fluids
In aerospace, flow control techniques have improved the separation flow characteristics around airfoils by various means. In this paper, the delayed detached eddy simulation (DDES) technique is used to simulate the detailed flow field around the NACA0021
Zelin Liu, Kaidi Li, Xiaojing Sun
doaj   +1 more source

Sound Synthesis of Objects Swinging through Air Using Physical Models

Applied Sciences, 2017
A real-time physically-derived sound synthesis model is presented that replicates the sounds generated as an object swings through the air. Equations obtained from fluid dynamics are used to determine the sounds generated while exposing practical ...
Rod Selfridge, David Moffat, Joshua D. Reiss   +2 more
doaj   +1 more source

Continuous Adjoint to Proudman's Formula for Aeroacoustic Shape Optimization

International Journal for Numerical Methods in Fluids, Volume 97, Issue 6, Page 966-984, June 2025.
This paper presents a cost‐efficient framework for aeroacoustic shape optimization by developing the adjoint to Proudman's formula, coupled with the steady‐state RANS equations and the k‐ ω$$ \omega $$ SST turbulence model. The aeroacoustic model and the adjoint solver are initially validated/verified with experimental data/finite differences, before ...
M. Erfan Farhikhteh, E. M. Papoutsis Kiachagias, K. C. Giannakoglou   +2 more
wiley   +1 more source

Near-Field Pressure Signature of New-Concept Supersonic Aircraft Obtained Using Open-Source Approach

Sci
This study investigates the numerical prediction of the sonic boom phenomenon in supersonic aircraft by evaluating the near-field pressure signatures of three different aeroshapes.
Antimo Glorioso, Francesco Petrosino, Mattia Barbarino, Giuseppe Pezzella   +3 more
doaj   +1 more source

On Physical Aeroacoustics with Some Implications for Low-Noise Aircraft Design and Airport Operations

Aerospace, 2015
Air traffic is growing at a steady rate of 3% to 5% per year in most regions of the world, implying a doubling every 15–25 years. This requires major advances in aircraft noise reduction at airports, just not to increase the noise exposure due to the ...
Luís M. B. C. Campos
doaj   +1 more source

Development and validity of type II sulcus vocalis in excised canine larynx

World Journal of Otorhinolaryngology - Head and Neck Surgery, Volume 11, Issue 2, Page 276-280, June 2025.
Abstract Objectives This study aims to develop a sulcus vocalis model in the excised canine larynx and to investigate the validity of the model. Methods Type II sulcus vocalis was created by continuous intradermal suture in six excised canine larynges.
Ting Gong, Peng‐Cheng Yu, Chao Xue, An‐Rong Sun, Yi Zhang, Rui Fang, Bing‐Hua Zhu   +6 more
wiley   +1 more source

The Update of an Aerodynamic Wind-Tunnel for Aeroacoustics Testing

Journal of Aerospace Technology and Management, 2014
This paper describes the update and characterization of a previously pure aerodynamics wind-tunnel into a facility able to simultaneously execute aerodynamics and aeroacoustics testing. It is demonstrated that the application of high-performance acoustic
Leandro Dantas Santana, Micael Carmo, Fernando Martini Catalano, Marcello A. F. Medeiros   +3 more
doaj