公开(公告)号：US10899417B1

公开(公告)日：2021-01-26

申请号：US16439108

申请日：2019-06-12

申请人： The United States of America, as represented by the Secretary of the Navy

发明人： David B. Coakley ,  Stephen M. Shepherd ,  David A. Newborn

IPC分类号： B63B1/32 ,  B63B1/36 ,  F03B17/06 ,  B63B1/34

摘要： In the absence of inventive practice, the hydrodynamic flows on both sides of a vertically oriented bluff body (e.g., cylinder) traveling through water tend to hug the bluff body proximate its curved back surface and to converge behind the bluff body, resulting in lateral sway of the bluff body. Exemplary inventive practice provides for attachment of a pair of waterjet-streaming devices at opposite axial ends of a bluff body such as a cylinder. The waterjet streams discharged by the two inventive devices, which adjoin the vertical bluff body, deflect the hydrodynamic flows on both curved side surfaces of the bluff body. The inventive apparatus thereby encourages a continued approximate parallelity of the hydrodynamic flows behind the bluff body, resulting in significantly greater stability of the bluff body. Some exemplary embodiments of the present invention provide for attachment of a single waterjet-streaming device at one axial end of the bluff body.