Sustained drag reduction in a turbulent flow using a low-temperature Leidenfrost surface
Skin friction drag contributes a major portion of the total drag for small and large water vehicles at high Reynolds number (Re). One emerging approach to reducing drag is to use superhydrophobic surfaces to promote slip boundary conditions. However, the air layer or “plastron” trapped on submerged...
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| Format: | Article |
| Language: | en_US |
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American Association for the Advancement of Science (AAAS)
2017
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| Online Access: | http://hdl.handle.net/1721.1/106505 https://orcid.org/0000-0001-9709-3642 https://orcid.org/0000-0002-6226-3370 https://orcid.org/0000-0002-3873-2472 https://orcid.org/0000-0003-4591-6090 https://orcid.org/0000-0003-1085-7692 https://orcid.org/0000-0001-8323-2779 |
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| author | Saranadhi, Dhananjai V. Chen, Dayong Kleingartner, Justin Alan Srinivasan, Siddarth Cohen, Robert E McKinley, Gareth H |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Saranadhi, Dhananjai V. Chen, Dayong Kleingartner, Justin Alan Srinivasan, Siddarth Cohen, Robert E McKinley, Gareth H |
| author_sort | Saranadhi, Dhananjai V. |
| collection | MIT |
| description | Skin friction drag contributes a major portion of the total drag for small and large water vehicles at high Reynolds number (Re). One emerging approach to reducing drag is to use superhydrophobic surfaces to promote slip boundary conditions. However, the air layer or “plastron” trapped on submerged superhydrophobic surfaces often diminishes quickly under hydrostatic pressure and/or turbulent pressure fluctuations. We use active heating on a superhydrophobic surface to establish a stable vapor layer or “Leidenfrost” state at a relatively low superheat temperature. The continuous film of water vapor lubricates the interface, and the resulting slip boundary condition leads to skin friction drag reduction on the inner rotor of a custom Taylor-Couette apparatus. We find that skin friction can be reduced by 80 to 90% relative to an unheated superhydrophobic surface for Re in the range 26,100 ≤ Re ≤ 52,000. We derive a boundary layer and slip theory to describe the hydrodynamics in the system and show that the plastron thickness is h = 44 ± 11 μm, in agreement with expectations for a Leidenfrost surface. |
| first_indexed | 2024-09-23T10:39:50Z |
| format | Article |
| id | mit-1721.1/106505 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:39:50Z |
| publishDate | 2017 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | dspace |
| spelling | mit-1721.1/1065052022-09-30T22:07:55Z Sustained drag reduction in a turbulent flow using a low-temperature Leidenfrost surface Saranadhi, Dhananjai V. Chen, Dayong Kleingartner, Justin Alan Srinivasan, Siddarth Cohen, Robert E McKinley, Gareth H Massachusetts Institute of Technology. Department of Chemical Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Saranadhi, Dhananjai V. Chen, Dayong Kleingartner, Justin Alan Srinivasan, Siddarth Cohen, Robert E McKinley, Gareth H Skin friction drag contributes a major portion of the total drag for small and large water vehicles at high Reynolds number (Re). One emerging approach to reducing drag is to use superhydrophobic surfaces to promote slip boundary conditions. However, the air layer or “plastron” trapped on submerged superhydrophobic surfaces often diminishes quickly under hydrostatic pressure and/or turbulent pressure fluctuations. We use active heating on a superhydrophobic surface to establish a stable vapor layer or “Leidenfrost” state at a relatively low superheat temperature. The continuous film of water vapor lubricates the interface, and the resulting slip boundary condition leads to skin friction drag reduction on the inner rotor of a custom Taylor-Couette apparatus. We find that skin friction can be reduced by 80 to 90% relative to an unheated superhydrophobic surface for Re in the range 26,100 ≤ Re ≤ 52,000. We derive a boundary layer and slip theory to describe the hydrodynamics in the system and show that the plastron thickness is h = 44 ± 11 μm, in agreement with expectations for a Leidenfrost surface. United States. Office of Naval Research (Contract 3002453814) 2017-01-17T15:49:54Z 2017-01-17T15:49:54Z 2016-10 2016-03 Article http://purl.org/eprint/type/JournalArticle 2375-2548 http://hdl.handle.net/1721.1/106505 Saranadhi, D. et al. “Sustained Drag Reduction in a Turbulent Flow Using a Low-Temperature Leidenfrost Surface.” Science Advances 2.10 (2016): e1600686–e1600686. https://orcid.org/0000-0001-9709-3642 https://orcid.org/0000-0002-6226-3370 https://orcid.org/0000-0002-3873-2472 https://orcid.org/0000-0003-4591-6090 https://orcid.org/0000-0003-1085-7692 https://orcid.org/0000-0001-8323-2779 en_US http://dx.doi.org/10.1126/sciadv.1600686 Science Advances Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf American Association for the Advancement of Science (AAAS) AAAS |
| spellingShingle | Saranadhi, Dhananjai V. Chen, Dayong Kleingartner, Justin Alan Srinivasan, Siddarth Cohen, Robert E McKinley, Gareth H Sustained drag reduction in a turbulent flow using a low-temperature Leidenfrost surface |
| title | Sustained drag reduction in a turbulent flow using a low-temperature Leidenfrost surface |
| title_full | Sustained drag reduction in a turbulent flow using a low-temperature Leidenfrost surface |
| title_fullStr | Sustained drag reduction in a turbulent flow using a low-temperature Leidenfrost surface |
| title_full_unstemmed | Sustained drag reduction in a turbulent flow using a low-temperature Leidenfrost surface |
| title_short | Sustained drag reduction in a turbulent flow using a low-temperature Leidenfrost surface |
| title_sort | sustained drag reduction in a turbulent flow using a low temperature leidenfrost surface |
| url | http://hdl.handle.net/1721.1/106505 https://orcid.org/0000-0001-9709-3642 https://orcid.org/0000-0002-6226-3370 https://orcid.org/0000-0002-3873-2472 https://orcid.org/0000-0003-4591-6090 https://orcid.org/0000-0003-1085-7692 https://orcid.org/0000-0001-8323-2779 |
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