Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session J25: Flow Control: Surface Modification and Permeability
4:35 PM–6:32 PM,
Sunday, November 19, 2023
Room: 150B
Chair: Mitul Luhar, Univeristy of South California
Abstract: J25.00005 : Drag reduction based on vapor stabilized surfaces on underwater superhydrophobic surfaces.*
5:27 PM–5:40 PM
Presenter:
Deepak J
(Indian Institute of Technology Goa)
Authors:
Deepak J
(Indian Institute of Technology Goa)
Arindam Das
(Indian Institute of Technology (IIT) Goa)
Collaborations:
Deepak J, Dr. Arindam Das
Efforts were made to create vapor-stable surfaces that could effectively tackle the challenge of plastron instability and for drag reduction. This was achieved by modifying the surface morphologies using micro, nano, hierarchical, and re-entrant geometries. Using a low-cost and scalable fabrication method, superhydrophobic surfaces based on nanofillers with highly re-entrant geometry was manufactured. The outcome resulted in significant drag reduction, primarily attributed to the improved stability of the vapor within the surface textures.
In summary, vapor-stable surfaces through advanced surface morphologies, have successfully increased the stability of the plastron layer providing a significant reduction in drag.
*Ministry of Human Resource Development, Government of India.
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