Deep reinforcement learning-based active flow control of vortex-induced vibration of a square cylinder

W Chen, Q Wang, L Yan, G Hu, BR Noack - Physics of Fluids, 2023 - pubs.aip.org
We mitigate vortex-induced vibrations of a square cylinder at a Reynolds number of 100
using deep reinforcement learning (DRL)-based active flow control (AFC). The proposed …

Trailing-edge flow and noise control using porous treatments

SAS Ali, M Azarpeyvand, CRI Da Silva - Journal of Fluid Mechanics, 2018 - cambridge.org
This paper is concerned with the application of porous treatments as a means of flow and
aerodynamic noise reduction. An extensive experimental investigation is undertaken to …

Experimental near-field analysis for flow induced noise of a structured porous-coated cylinder

R Maryami, EJG Arcondoulis, Q Liu, Y Liu - Journal of Sound and Vibration, 2023 - Elsevier
Porous coating on cylinders reduces the aerodynamic noise due to vortex shedding. A key
understanding of how porous media suppress vortex shedding is related to near-field …

Experimental evaluation of cylinder vortex shedding noise reduction using porous material

TF Geyer - Experiments in Fluids, 2020 - Springer
The tonal noise generation of a circular cylinder in a uniform flow is an important source of
aerodynamic noise. It can be found at parts of the landing gear of airplanes, at pantographs …

[PDF][PDF] A review on active and passive flow control techniques

SN Joshi, YS Gujarathi - … on Recent Technologies in Mechanical and …, 2016 - academia.edu
Flow control technique is an important research field of aerodynamics. Flow control implies a
small change of a configuration serving an ideally large engineering benefit. The aim of this …

Structured porous material design for passive flow and noise control of cylinders in uniform flow

EJG Arcondoulis, Y Liu, Z Li, Y Yang, Y Wang - Materials, 2019 - mdpi.com
Cylindrical bodies in uniform flows can be coated with a porous medium as a passive flow
and noise control method in an effort to reduce the acoustic effects of vortex shedding. To …

[HTML][HTML] On the influence of porous coating thickness and permeability on passive flow and noise control of cylinders

S Sharma, TF Geyer, EJG Arcondoulis - Journal of Sound and Vibration, 2023 - Elsevier
Aeroacoustic studies of porous cylinder coatings, which reduce the vortex shedding noise of
cylinders in uniform flow, have received increased attention. To further understand how …

Drag reduction of circular cylinders by porous coating on the leeward side

K Klausmann, B Ruck - Journal of Fluid Mechanics, 2017 - cambridge.org
The present paper describes the effect of drag reduction of circular cylinders due to a porous
coating on their leeward sides. To investigate the coating effect, experiments were …

Passive separation control using a self-adaptive hairy coating

J Favier, A Dauptain, D Basso… - Journal of Fluid Mechanics, 2009 - cambridge.org
A model of hairy medium is developed using a homogenized approach, and the fluid flow
around a circular cylinder partially coated with hair is analysed by means of numerical …

An investigation of wake flows produced by asymmetrically structured porous coated cylinders

EJG Arcondoulis, TF Geyer, Y Liu - Physics of Fluids, 2021 - pubs.aip.org
The vortex shedding tone of a cylinder in uniform flow can be reduced by applying a porous
coating yet this mechanism is not fully understood. An experimental investigation of …