Control of cavity flow with acoustic radiation by an intermittently driven plasma actuator

H Yokoyama, K Otsuka, K Otake, M Nishikawara… - Physics of …, 2020 - pubs.aip.org
In a cavity flow with acoustic radiation, self-sustained oscillations are controlled by a
continuously or intermittently driven plasma actuator with elongated electrodes in the …

Suppression of deep cavity aeroacoustics at low Mach number by localized surface compliance

MR Naseer, I Arif, RCK Leung, GCY Lam - Physics of Fluids, 2023 - pubs.aip.org
A unique concept of utilizing localized surface compliance is proposed to suppress deep
cavity aeroacoustics at a low Mach number. The core idea is to provide local absorption of …

Simulation of thermoacoustic heat pump effects driven by acoustic radiation in a cavity flow

H Yokoyama, Y Omori, M Kume, M Nishikawara… - International Journal of …, 2022 - Elsevier
Computations of coupled phenomena between the fluid and acoustic interactions in the
cavity flow and heat conduction in the flat plates (stack) installed in the cavity were …

Surface roughness effects on cavity flows

G Nampelly, AS Malathi, A Vaid, NR Vadlamani… - Flow, Turbulence and …, 2022 - Springer
Abstract Effects of three-dimensional (3-D) distributed roughness elements on the flow
characteristics within a cavity are investigated using a series of high-fidelity eddy-resolving …

Performance and mechanism of the hydrodynamic noise reduction for biomimetic trailing-edge serrations of a submarine

Z Ma, P Li, H Guo, K Liao, Y Yang - Journal of Fluids and Structures, 2025 - Elsevier
As submarine speed increases, the hydrodynamic noise generated by the sail of a
submarine becomes more pronounced. Inspired by the noise reduction capabilities …

Experimental tests and aeroacoustic simulations of the control of cavity tone by plasma actuators

H Yokoyama, I Tanimoto, A Iida - Applied Sciences, 2017 - mdpi.com
Featured Application Noise reduction in high-speed transport vehicles. Abstract A plasma
actuator comprising a dielectric layer sandwiched between upper and lower electrodes can …

An experimental characterization on the acoustic performance of forward/rearward retraction of a nose landing gear

Y Liang, K Zhao, Y Chen, L Zhang… - International Journal of …, 2019 - Wiley Online Library
The modern undercarriage system of a large aircraft normally requires the landing gear to
be retractable. The nose landing gear, installed in the front of the fuselage, is retracted either …

Effect of flow-induced surface vibration on deep cavity aeroacoustics

MR Naseer, I Arif, GCY Lam, RC Leung - 28th AIAA/CEAS …, 2022 - arc.aiaa.org
This study examines an elastic panel flush-mounted on the bottom wall of a deep cavity,
under the subsonic flow condition of Mach number 0.09, as a passive approach to the tonal …

Deep cavity noise suppression by exploiting aeroacoustic–structural interaction of multiple elastic panels

MR Naseer, I Arif, RCK Leung, A Abdullah - Physics of Fluids, 2024 - pubs.aip.org
This paper reports a numerical study of a novel methodology for passive suppression of
deep cavity noise by means of strategically designed and arrangements of multiple elastic …

Experimental Study of Deep Cavity Noise Suppression by Surface Compliance

MR Naseer, L Li, J Zou, RCK Leung, Y Liu… - 30th AIAA/CEAS …, 2024 - arc.aiaa.org
This study investigates a novel passive control technique for suppressing tonal noise in
deep cavities, focusing on the strategic use of surface compliance. An experimental setup …