Skip to Main content Skip to Navigation
Conference papers

Impact of tidal turbine biofouling on turbulence and power generation

Abstract : This work is a part of a project aiming to study the impact of biofouling on turbine performances. It describes the fluid-structure calculation applied to a Darrieus turbine using the Openfoam code in order to take the mass variation of the solid into account. Forced and induced rotation simulations are compared for water and air. For both fluids, the results show that the flow field in the rotor's wake is similar for the two types of movement. Therefore the solid solver does not change fluid results. Blue mussels are fixed to the blades, which leads to a supplementary mass that has been decorrelated from hydrodynamics to understand its effects. For the chosen implantation (small), the only observable modification is a delay between light and heavier rotors. However, the coarse mesh used in this study is not sufficient to compute the flow around blades with accuracy. This has a strong impact on calculation of forces and by extension on the rotor's dynamics. A mesh convergence procedure is planned to reach the necessary mesh precision and laboratory experiments should be made in order to validate dynamical results with low flow speed.
Complete list of metadatas

Cited literature [9 references]  Display  Hide  Download

https://hal-normandie-univ.archives-ouvertes.fr/hal-02414334
Contributor : Pierre Weill <>
Submitted on : Monday, December 16, 2019 - 3:45:34 PM
Last modification on : Monday, April 27, 2020 - 4:26:30 PM
Long-term archiving on: : Tuesday, March 17, 2020 - 7:31:36 PM

File

Article_CFM.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-02414334, version 1

Collections

Citation

Ilan Robin, Anne-Claire Bennis, Jean-Claude Dauvin, Hamid Gualous. Impact of tidal turbine biofouling on turbulence and power generation. 24e Congrès Français de Mécanique, Aug 2019, Brest, France. pp.1-12. ⟨hal-02414334⟩

Share

Metrics

Record views

41

Files downloads

39