LePing Huang
Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force
Huang, LePing; Choi, Kwing-So; Fan, BaoChun; Chen, YaoHui
Authors
Abstract
Turbulent control and drag reduction in a channel flow via a bidirectional traveling wave induced by spanwise oscillating Lorentz force have been investigated in the paper. The results based on the direct numerical simulation (DNS) indicate that the bidirectional wavy Lorentz force with appropriate control parameters can result in a regular decline of near-wall streaks and vortex structures with respect to the flow direction, leading to the effective suppression of turbulence generation and significant reduction in skin-friction drag. In addition, experiments are carried out in a water tunnel via electro-magnetic (EM) actuators designed to produce the bidirectional traveling wave excitation as described in calculations. As a result, the actual substantial drag reduction is realized successfully in these experiments.
Citation
Huang, L., Choi, K.-S., Fan, B., & Chen, Y. (2014). Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force. Science China Physics, Mechanics and Astronomy, 57(11), https://doi.org/10.1007/s11433-014-5416-2
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 23, 2013 |
Online Publication Date | Apr 14, 2014 |
Publication Date | Nov 30, 2014 |
Deposit Date | Sep 21, 2017 |
Publicly Available Date | Sep 21, 2017 |
Journal | Science China Physics, Mechanics and Astronomy |
Print ISSN | 1674-7348 |
Electronic ISSN | 1869-1927 |
Publisher | Springer Verlag |
Peer Reviewed | Peer Reviewed |
Volume | 57 |
Issue | 11 |
DOI | https://doi.org/10.1007/s11433-014-5416-2 |
Keywords | Turbulence control, Direct numerical simulation, Channel flow, Lorentz force, Drag reduction |
Public URL | https://nottingham-repository.worktribe.com/output/739023 |
Publisher URL | https://link.springer.com/article/10.1007/s11433-014-5416-2 |
Additional Information | The final publication is available at Springer via http://dx.doi.org/10.1007/s11433-014-5416-2. |
Contract Date | Sep 21, 2017 |
Files
Drag reduction in turbulent channel flow.pdf
(6.4 Mb)
PDF
You might also like
Flow control over an airfoil using virtual Gurney flaps
(2015)
Journal Article
Robust control of flow separation over a pitching aerofoil using plasma actuators
(2017)
Journal Article
Output feedback control of flow separation over an aerofoil using plasma actuators
(2018)
Journal Article
Turbulent boundary-layer control with plasma spanwise travelling waves
(2014)
Journal Article
Plasma virtual-roughness elements for cross-flow instability control
(2018)
Journal Article
Downloadable Citations
About Repository@Nottingham
Administrator e-mail: discovery-access-systems@nottingham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search