公开(公告)号：US10787231B2

公开(公告)日：2020-09-29

申请号：US15663595

申请日：2017-07-28

Applicant: California Institute of Technology

Inventor： Cong Wang ,  David Jeon ,  Morgane Grivel ,  Francisco Pereira ,  Morteza Gharib

IPC: F15C1/08 ,  B63B1/38 ,  F15D1/12 ,  F15D1/06 ,  C09D5/16 ,  F15D1/00

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.

公开(公告)号：US20180229808A1

公开(公告)日：2018-08-16

申请号：US15663595

申请日：2017-07-28

Applicant: California Institute of Technology

Inventor： Cong Wang ,  David Jeon ,  Morgane Grivel ,  Francisco Pereira ,  Morteza Gharib

IPC: B63B1/38 ,  F15D1/12 ,  F15D1/06 ,  C09D5/16

CPC classification number: B63B1/38 ,  B63B2001/387 ,  C09D5/1618 ,  C09D5/1637 ,  C09D5/1681 ,  F15D1/005 ,  F15D1/007 ,  F15D1/065 ,  F15D1/12 ,  Y02T70/122

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.