Systems, methods, and apparatuses for reducing hydrodynamic frictional drag
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United States of America Patent
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Sep 29, 2020
Grant Date -
Aug 16, 2018
app pub date -
Jul 28, 2017
filing date -
Jul 29, 2016
priority date (Note) -
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Abstract
Systems, methods and apparatuses are provided for the reduction of hydrodynamic frictional drag. These systems, methods and apparatuses can include a vessel surface having an external layer and a plurality of dimples, wherein the external layer comprises a hydrophilic material, and wherein each of the dimples includes an inner surface having a superhydrophobic coating. The dimples can be configured to maintain an air-water interface as one or more fluids flow over the vessel surface. In some embodiments, a pressure reservoir can be coupled with the dimples, and can include an acoustic speaker to vibrate the air-water interface.
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