Enhancement of vortex induced forces and motion through surface roughness control
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).
- Inventors:
-
- Saline, MI
- Houston, TX
- Issue Date:
- Research Org.:
- Vortex Hydro Energy, Inc., Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1033940
- Patent Number(s):
- 8047232
- Application Number:
- 12/277,321
- Assignee:
- The Regents of The University of Michigan (Ann Arbor, MI)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B63 - SHIPS OR OTHER WATERBORNE VESSELS B63B - SHIPS OR OTHER WATERBORNE VESSELS
F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03B - MACHINES OR ENGINES FOR LIQUIDS
- DOE Contract Number:
- FG36-05GO15162
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 13 HYDRO ENERGY
Citation Formats
Bernitsas, Michael M, and Raghavan, Kamaldev. Enhancement of vortex induced forces and motion through surface roughness control. United States: N. p., 2011.
Web.
Bernitsas, Michael M, & Raghavan, Kamaldev. Enhancement of vortex induced forces and motion through surface roughness control. United States.
Bernitsas, Michael M, and Raghavan, Kamaldev. Tue .
"Enhancement of vortex induced forces and motion through surface roughness control". United States. https://www.osti.gov/servlets/purl/1033940.
@article{osti_1033940,
title = {Enhancement of vortex induced forces and motion through surface roughness control},
author = {Bernitsas, Michael M and Raghavan, Kamaldev},
abstractNote = {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).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {11}
}
Works referenced in this record:
Passive Control of Vortex-Induced Vibrations: An Overview
journal, January 2008
- Kumar, Raghavan; Sohn, Chan-Hyun; Gowda, Bangalore
- Recent Patents on Mechanical Engineeringe, Vol. 1, Issue 1