1 / 11

MEDA Model 5 – Bottom-hinged pitching wave energy system design and analysis

MEDA Model 5 – Bottom-hinged pitching wave energy system design and analysis. Ye Li – NREL Yi- Hsiang Yu– NREL Robert Thresher – NREL MEDA Model Meeting State College, PA August 23-24, 2011. Presentation outline. Background: several developed device concepts. BioWave. WaveRoller.

zlhna
Télécharger la présentation

MEDA Model 5 – Bottom-hinged pitching wave energy system design and analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MEDA Model 5 – Bottom-hinged pitching wave energy system design and analysis Ye Li – NREL Yi-Hsiang Yu– NREL Robert Thresher – NREL MEDA Model Meeting State College, PA August 23-24, 2011

  2. Presentation outline

  3. Background: several developed device concepts BioWave WaveRoller Oyster

  4. Several design variables need to be considered

  5. Device design *Overview of Large Dimensions • The device design was obtained from Sandia National Lab • Device is attached to the seabed and designed to operate in water depths of 20-25m.

  6. Modeling Plan • Potential code modeling (WAMIT or other BEM code) for basic geometry and thickness designs  • CFD simulations (FVM or SPH) for more detail analysis. • Validation with experimental test • Optimization based on hydrodynamic analysis results

  7. Numerical Settings for CFD Simulation Plate size: Height=10m Thickness=2m Water surface Mean water Depth = 25 m Incident waves: Wave height=4m Wave period=10sec Sponge-layer damping zone Seabed Supporting arm currently was not included in the CFD simulation

  8. Computational Grid • Preliminary computational grid is very coarse (N≈45,000), and a grid refinement study is planned.

  9. Preliminary Result • Wave condition: H=4m; T=10 sec • The top of the flap is 1.25m below the mean water surface.

  10. Smooth Particle Hydrodynamics

  11. Discussions • In the current preliminary design, wave energy may be lost due to the cap between the water surface and the flap.  • To accurately predict and investigate the performance of this type of wave energy device( with extreme wave breaking and overtopping), CFD simulation is needed.  • Experimental test must be conducted in parallel with the numerical method development to ensure the quality of the design

More Related