Bibliographic Details
| Title: |
Combined Passive/Active Flow Control of Drag and Lift Forces on a Cylinder in Crossflow Using a Synthetic Jet Actuator and Porous Coatings |
| Authors: |
Gearóid Farrell, Michael Gibbons, Tim Persoons |
| Source: |
Actuators, Vol 11, Iss 7, p 201 (2022) |
| Publisher Information: |
MDPI AG, 2022. |
| Publication Year: |
2022 |
| Collection: |
LCC:Materials of engineering and construction. Mechanics of materials
LCC:Production of electric energy or power. Powerplants. Central stations |
| Subject Terms: |
drag reduction, oscillating lift, porous media flow, vortex shedding, synthetic jet, experimental fluid dynamics, Materials of engineering and construction. Mechanics of materials, TA401-492, Production of electric energy or power. Powerplants. Central stations, TK1001-1841 |
| More Details: |
This paper combines a synthetic jet actuator (SJA) and a leeward porous coating to alter the aerodynamic forces on a cylinder in crossflow at Re = 4.2 × 104. While SJAs and porous coatings are known to be effective flow control methods in isolation, their combined effect has not been studied. A 2D numerical model was created of a cylinder with a SJA at 90° and 100° leeward porous coating. The model was validated using accompanying water tunnel tests. The combined model was tested for dimensionless frequencies 0.15 1, the combined SJA and porous coating configuration did not differ from the SJA only configuration, achieving the largest drag reduction of 45% at f+ = 4. The flow control mechanisms of the SJA and porous coating do not combine constructively in this current setup. However, the porous coating is beneficial for f+< 1, causing an overall drag reduction even when the active SJA tends to increase drag. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2076-0825 |
| Relation: |
https://www.mdpi.com/2076-0825/11/7/201; https://doaj.org/toc/2076-0825 |
| DOI: |
10.3390/act11070201 |
| Access URL: |
https://doaj.org/article/5b5c50d4079a4b5789a1339cc047c31f |
| Accession Number: |
edsdoj.5b5c50d4079a4b5789a1339cc047c31f |
| Database: |
Directory of Open Access Journals |
