RANS Simulation of the Heave Response of a Two-Body Floating Point Wave Absorber: Preprint

Conference · Tue Mar 01 00:00:00 EST 2011

OSTI ID:1011273

Yu, Y; Li, Y

A preliminary study on a two-body floating wave absorbers is presented in this paper. A Reynolds-Averaged Navier-Stokes computational method is applied for analyzing the hydrodynamic heave response of the absorber in operational wave conditions. The two-body floating wave absorber contains a float section and a submerged reaction section. For validation purposes, our model is first assumed to belocked. The two sections are forced to move together with each other. The locked single body model is used in a heave decay test, where the RANS result is validated with the experimental measurement. For the two-body floating point absorber simulation, the two sections are connected through a mass-spring-damper system, which is applied to simulate the power take-off mechanism under design waveconditions. Overall, the details of the flow around the absorber and its nonlinear interaction with waves are investigated, and the power absorption efficiency of the two-body floating wave absorber in waves with a constant value spring-damper system is examined.

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1011273
• Report Number(s): NREL/CP-5000-50980; TRN: US201109%%262
• Resource Relation: Conference: Presented at ISOPE 2011, 19-24 June 2011, Maui, Hawaii
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
ABSORPTION
DECAY
DESIGN
EFFICIENCY
HYDRODYNAMICS
SIMULATION
VALIDATION
RANS simulation
offshore wind turbines
two-body floating point wave absorber
wave energy conversion (WEC)
heave
Reynolds-averaged Navier-Stokes (RANS) equation
volume of fluid (VOF)
free surface
floating-point absorber (FPA)
power take off (PTO)