公开(公告)号：US20090250129A1

公开(公告)日：2009-10-08

申请号：US12277321

申请日：2008-11-25

Applicant: Michael M. Bernitsas ,  Kamaldev Raghavan

Inventor： Michael M. Bernitsas ,  Kamaldev Raghavan

IPC: F15C1/16 ,  F15C1/18

CPC classification number: F03B17/06 ,  B63B2021/504 ,  F05B2240/201 ,  F05B2240/32 ,  F15D1/12 ,  Y02E10/28 ,  Y02E10/721 ,  Y10T137/2087

Abstract: Roughness is added to the surface of a bluff body in a relative motion with respect to a fluid. The amount, size, and distribution of roughness on the body surface is controlled passively or actively to modify the flow around the body and subsequently the Vortex Induced Forces and Motion (VIFM). The added roughness, when designed and implemented appropriately, affects in a predetermined way the boundary layer, the separation of the boundary layer, the level of turbulence, the wake, the drag and lift forces, and consequently the Vortex Induced Motion (VIM), and the fluid-structure interaction. The goal of surface roughness control is to increase Vortex Induced Forces and Motion. Enhancement is needed in such applications as harnessing of clean and renewable energy from ocean/river currents using the ocean energy converter VIVACE (Vortex Induced Vibration for Aquatic Clean Energy).

Abstract translation: 粗糙度以相对于流体的相对运动的方式被添加到非流线型体的表面。 身体表面的粗糙度的数量，大小和分布被动地或主动地被控制以修改身体周围的流动，随后调节Vortex诱导力和运动（VIFM）。 增加的粗糙度，当设计和实施适当时，以预定的方式影响边界层，边界层的分离，湍流的水平，尾流，阻力和提升力，并因此影响涡旋感应运动（VIM） 和流体 - 结构相互作用。 表面粗糙度控制的目标是增加涡流诱导力和运动。 在使用海洋能量转换器VIVACE（Vortex Induced Vibration for Aquatic Clean Energy）的海洋/河流利用清洁和可再生能源的应用中需要加强。

公开(公告)号：US07493759B2

公开(公告)日：2009-02-24

申请号：US11272504

申请日：2005-11-10

Applicant: Michael M Bernitsas ,  Kamaldev Raghavan

Inventor： Michael M Bernitsas ,  Kamaldev Raghavan

IPC: F03C1/00

CPC classification number: F03B17/06 ,  F03G7/08 ,  F05B2240/40 ,  F05B2240/97 ,  F05B2260/4031 ,  F05B2260/406 ,  Y02E10/28

Abstract: A converter for producing useable energy from fluid motion of a fluid medium. The converter includes a support structure, at least one movable element immersed in the fluid medium and supported externally on the support structure such that the movable element can move relatively to the structure in response to the fluid motion by vortex induced motion, galloping or combination thereof, and at least one power device supported on the support structure and coupled to the movable element. The power device converts motion of the movable element to useable energy.

Abstract translation: 一种用于通过流体介质的流体运动产生可用能量的转换器。 转换器包括支撑结构，至少一个可移动元件浸没在流体介质中并在外部支撑在支撑结构上，使得可移动元件能够通过涡流引起的运动，振荡或其组合响应流体运动而相对于结构移动 以及支撑在所述支撑结构上并联接到所述可移动元件的至少一个动力装置。 功率器件将可移动元件的运动转换为可用能量。

公开(公告)号：US20090114002A1

公开(公告)日：2009-05-07

申请号：US12125409

申请日：2008-05-22

Applicant: MICHAEL M. BERNITSAS ,  KAMALDEV RAGHAVAN

Inventor： MICHAEL M. BERNITSAS ,  KAMALDEV RAGHAVAN

IPC: G01B5/28 ,  G01F1/32

CPC classification number: F15D1/12 ,  B63B2021/504 ,  Y10T137/2087

Abstract: Roughness is added to the surface of a bluff body in a relative motion with respect to a fluid. The amount, size, and distribution of roughness on the body surface is controlled passively or actively to modify the flow around the body and subsequently the Vortex Induced Forces and Motion (VIFM). The added roughness, when designed and implemented appropriately, affects in a predetermined way the boundary layer, the separation of the boundary layer, the level of turbulence, the wake, the drag and lift forces, and consequently the Vortex Induced Motion (VIM), and the fluid-structure interaction. The goal of surface roughness control is to decrease/suppress Vortex Induced Forces and Motion. Suppression is required when fluid-structure interaction becomes destructive as in VIM of flexible cylinders or rigid cylinders on elastic support, such as underwater pipelines, marine risers, tubes in heat exchangers, nuclear fuel rods, cooling towers, SPAR offshore platforms.

Abstract translation: 粗糙度以相对于流体的相对运动的方式被添加到非流线型体的表面。 身体表面的粗糙度的数量，大小和分布被动地或主动地被控制以修改身体周围的流动，随后调节Vortex诱导力和运动（VIFM）。 增加的粗糙度，当设计和实施适当时，以预定的方式影响边界层，边界层的分离，湍流的水平，尾流，阻力和提升力，并因此影响涡旋感应运动（VIM） 和流体 - 结构相互作用。 表面粗糙度控制的目的是减少/抑制涡旋诱导力和运动。 当流体 - 结构相互作用变为破坏性时，如弹性支撑件（如水下管道，海洋立管，热交换器管，核燃料棒，冷却塔，SPAR海上平台）中的柔性气缸或刚性气缸的VIM需要抑制。

公开(公告)号：US20080295509A1

公开(公告)日：2008-12-04

申请号：US11272504

申请日：2005-11-10

Applicant: Michael M. Bernitsas ,  Kamaldev Raghavan

Inventor： Michael M. Bernitsas ,  Kamaldev Raghavan

IPC: F03C1/00

CPC classification number: F03B17/06 ,  F03G7/08 ,  F05B2240/40 ,  F05B2240/97 ,  F05B2260/4031 ,  F05B2260/406 ,  Y02E10/28

Abstract: A converter for producing useable energy from fluid motion of a fluid medium. The converter includes a support structure, at least one movable element immersed in the fluid medium and supported externally on the support structure such that the movable element can move relatively to the structure in response to the fluid motion by vortex induced motion, galloping or combination thereof, and at least one power device supported on the support structure and coupled to the movable element. The power device converts motion of the movable element to useable energy.

Abstract translation: 一种用于通过流体介质的流体运动产生可用能量的转换器。 转换器包括支撑结构，至少一个可移动元件浸没在流体介质中并在外部支撑在支撑结构上，使得可移动元件能够通过涡流引起的运动，振荡或其组合响应流体运动而相对于结构移动 以及支撑在所述支撑结构上并联接到所述可移动元件的至少一个动力装置。 功率器件将可移动元件的运动转换为可用能量。

公开(公告)号：US08684040B2

公开(公告)日：2014-04-01

申请号：US12125409

申请日：2008-05-22

Applicant: Michael M. Bernitsas ,  Kamaldev Raghavan

Inventor： Michael M. Bernitsas ,  Kamaldev Raghavan

IPC: F15C1/16

CPC classification number: F15D1/12 ,  B63B2021/504 ,  Y10T137/2087

Abstract: Roughness is added to the surface of a bluff body in a relative motion with respect to a fluid. The amount, size, and distribution of roughness on the body surface is controlled passively or actively to modify the flow around the body and subsequently the Vortex Induced Forces and Motion (VIFM). The added roughness, when designed and implemented appropriately, affects in a predetermined way the boundary layer, the separation of the boundary layer, the level of turbulence, the wake, the drag and lift forces, and consequently the Vortex Induced Motion (VIM), and the fluid-structure interaction. The goal of surface roughness control is to decrease/suppress Vortex Induced Forces and Motion. Suppression is required when fluid-structure interaction becomes destructive as in VIM of flexible cylinders or rigid cylinders on elastic support, such as underwater pipelines, marine risers, tubes in heat exchangers, nuclear fuel rods, cooling towers, SPAR offshore platforms.

Abstract translation: 粗糙度以相对于流体的相对运动的方式被添加到非流线型体的表面。 身体表面的粗糙度的数量，大小和分布被动地或主动地被控制以修改身体周围的流动，随后调节Vortex诱导力和运动（VIFM）。 增加的粗糙度，当设计和实施适当时，以预定的方式影响边界层，边界层的分离，湍流的水平，尾流，阻力和提升力，并因此影响涡旋感应运动（VIM） 和流体 - 结构相互作用。 表面粗糙度控制的目的是减少/抑制涡旋诱导力和运动。 当流体 - 结构相互作用变为破坏性时，如弹性支撑件（如水下管道，海洋立管，热交换器管，核燃料棒，冷却塔，SPAR海上平台）中的柔性气缸或刚性气缸的VIM需要抑制。

公开(公告)号：US08047232B2

公开(公告)日：2011-11-01

申请号：US12277321

申请日：2008-11-25

Applicant: Michael M. Bernitsas ,  Kamaldev Raghavan

Inventor： Michael M. Bernitsas ,  Kamaldev Raghavan

IPC: F15C1/16

CPC classification number: F03B17/06 ,  B63B2021/504 ,  F05B2240/201 ,  F05B2240/32 ,  F15D1/12 ,  Y02E10/28 ,  Y02E10/721 ,  Y10T137/2087

Abstract: Roughness is added to the surface of a bluff body in a relative motion with respect to a fluid. The amount, size, and distribution of roughness on the body surface is controlled passively or actively to modify the flow around the body and subsequently the Vortex Induced Forces and Motion (VIFM). The added roughness, when designed and implemented appropriately, affects in a predetermined way the boundary layer, the separation of the boundary layer, the level of turbulence, the wake, the drag and lift forces, and consequently the Vortex Induced Motion (VIM), and the fluid-structure interaction. The goal of surface roughness control is to increase Vortex Induced Forces and Motion. Enhancement is needed in such applications as harnessing of clean and renewable energy from ocean/river currents using the ocean energy converter VIVACE (Vortex Induced Vibration for Aquatic Clean Energy).

Abstract translation: 粗糙度以相对于流体的相对运动的方式被添加到非流线型体的表面。 身体表面的粗糙度的数量，大小和分布被动地或主动地被控制以修改身体周围的流动，随后调节Vortex诱导力和运动（VIFM）。 增加的粗糙度，当设计和实施适当时，以预定的方式影响边界层，边界层的分离，湍流的水平，尾流，阻力和提升力，并因此影响涡旋感应运动（VIM） 和流体 - 结构相互作用。 表面粗糙度控制的目标是增加涡流诱导力和运动。 在使用海洋能量转换器VIVACE（Vortex Induced Vibration for Aquatic Clean Energy）的海洋/河流利用清洁和可再生能源的应用中需要加强。

公开(公告)号：US20090114001A1

公开(公告)日：2009-05-07

申请号：US12125380

申请日：2008-05-22

Applicant: MICHAEL M. BERNITSAS ,  KAMALDEV RAGHAVAN

Inventor： MICHAEL M. BERNITSAS ,  KAMALDEV RAGHAVAN

IPC: G01B5/28 ,  G01F1/32

CPC classification number: F03B17/06 ,  B63B2021/504 ,  F05B2240/201 ,  F05B2240/32 ,  F15D1/12 ,  Y02E10/28 ,  Y02E10/721 ,  Y10T137/2087

Abstract: Roughness is added to the surface of a bluff body in a relative motion with respect to a fluid. The amount, size, and distribution of roughness on the body surface is controlled passively or actively to modify the flow around the body and subsequently the Vortex Induced Forces and Motion (VIFM). The added roughness, when designed and implemented appropriately, affects in a predetermined way the boundary layer, the separation of the boundary layer, the level of turbulence, the wake, the drag and lift forces, and consequently the Vortex Induced Motion (VIM), and the fluid-structure interaction. The goal of surface roughness control is to increase Vortex Induced Forces and Motion. Enhancement is needed in such applications as harnessing of clean and renewable energy from ocean/river currents using the ocean energy converter VIVACE (Vortex Induced Vibration for Aquatic Clean Energy).