Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force
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...
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| Format: | Article |
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Springer
2014
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| Online Access: | https://eprints.nottingham.ac.uk/46543/ |
| _version_ | 1848797351447101440 |
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| author | Huang, LePing Choi, Kwing-So Fan, BaoChun Chen, YaoHui |
| author_facet | Huang, LePing Choi, Kwing-So Fan, BaoChun Chen, YaoHui |
| author_sort | Huang, LePing |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T20:02:30Z |
| format | Article |
| id | nottingham-46543 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:02:30Z |
| publishDate | 2014 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-465432020-05-04T16:56:55Z https://eprints.nottingham.ac.uk/46543/ Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force Huang, LePing Choi, Kwing-So Fan, BaoChun Chen, YaoHui 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. Springer 2014-11-30 Article PeerReviewed Huang, LePing, Choi, Kwing-So, Fan, BaoChun and Chen, YaoHui (2014) Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force. Science China Physics, Mechanics and Astronomy, 57 (11). pp. 2133-2140. ISSN 1869-1927 Turbulence control Direct numerical simulation Channel flow Lorentz force Drag reduction https://link.springer.com/article/10.1007/s11433-014-5416-2 doi:10.1007/s11433-014-5416-2 doi:10.1007/s11433-014-5416-2 |
| spellingShingle | Turbulence control Direct numerical simulation Channel flow Lorentz force Drag reduction Huang, LePing Choi, Kwing-So Fan, BaoChun Chen, YaoHui Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force |
| title | Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force |
| title_full | Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force |
| title_fullStr | Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force |
| title_full_unstemmed | Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force |
| title_short | Drag reduction in turbulent channel flow using bidirectional wavy Lorentz force |
| title_sort | drag reduction in turbulent channel flow using bidirectional wavy lorentz force |
| topic | Turbulence control Direct numerical simulation Channel flow Lorentz force Drag reduction |
| url | https://eprints.nottingham.ac.uk/46543/ https://eprints.nottingham.ac.uk/46543/ https://eprints.nottingham.ac.uk/46543/ |