Numerical simulations of biofouling effects on the tidal turbine hydrodynamic

Rivier, Aurélie; Bennis, Anne-Claire; Jean, G.; Dauvin, Jean–Claude

doi:10.36688/imej.1.101-109

Cited by 10 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most similar prior work to our study is a numerical investigation of cross-flow turbine fouling performed by Rivier et al [19]. Two-dimensional simulations showed that barnacle colonization of the blades significantly altered the vorticity field, with attendant implications for performance.…”

Section: Introductionsupporting

confidence: 63%

See 1 more Smart Citation

Implications of biofouling on cross-flow turbine performance

Stringer

2020

SN Appl. Sci.

View full text Add to dashboard Cite

While biofouling is known to degrade the performance of marine energy conversion systems, prior experimental work has not explored this topic for cross-flow turbines. Here, we present experiments that investigate the impact of biofouling on turbine power output and structural loads. Using additive manufacturing, a three-dimensional scan of a barnacle was patterned onto the surface of turbine blades at three sizes and number densities, representing the progression from initial colonization to maturity. The impact of barnacles on turbine power output was found to be substantial and, for the most severe cases of fouling, the turbine does not produce power at any rotation rate. Conversely, barnacle fouling was found to have minimal impact on structural loading. To maintain generation capacity over extended periods, these results highlight the importance of antifouling coatings and proactive blade cleaning.

show abstract

Section: Introductionsupporting

confidence: 63%

“…Consequently, for a cross-flow turbine, instantaneous torque varies periodically, and blades can experience deep dynamic stall and interact with their own wake [23][24][25]. As observed by Rivier et al [19], resolving these unsteady boundary layer interactions in simulation often comes at high computational cost.…”

Section: Cross-flow Turbine Hydrodynamicsmentioning

confidence: 99%

Implications of biofouling on cross-flow turbine performance

Stringer

2020

SN Appl. Sci.

View full text Add to dashboard Cite

show abstract

“…It is very useful for complex geometry like a tidal turbine, especially with twist. The mesh includes a static and a rotating part linked by an Arbitrary Mesh Interface (AMI)( [7]). The rotating part is refined to preserve the quality of the evaluation of the forces and the generation of the vortices.…”

Section: Test Case: a Horizontal Axis Tidal Turbinementioning

confidence: 99%

“…To simulate the flow around biofouled turbines, the best option is to use classic full Navier-Stokes methods ( [6]). In order to compute the forces on the structure as well as the wake, results of Reynolds-averaged Navier-Stokes (RANS) and Large Eddy Simulation (LES) have been compared in [7]. Even though RANS gives good results for constrain estimation, it often dissipates vortices, which leads rapidly to an early fading of the wake.…”

Section: Introductionmentioning

confidence: 99%

Eulerian Pressure-Velocity/ Lagrangian Vorticity-Velocity Coupling Applied to Wake and Forces Calculation of Biofouled Tidal Turbines

Robin¹,

Bennis²,

Dauvin³

2021

14th WCCM-ECCOMAS Congress

View full text Add to dashboard Cite

Marine tidal turbines are subject to the environment in which they are deployed. In the natural environment, they are gradually colonized by sessile species. These fouling organisms modify the flow around the blades and in the wake of the tidal turbine. Unfortunately, they also complicate the numerical study of such tidal turbines by preventing the use of usual methods such as the Blade Element Method or the Lifting Line Theory. In this context, we propose to use an alternative solution, which combines an Eulerian code to study the near field with a Lagrangian code for the wake. After a short presentation of each code, the coupling method is detailed, and applied to the case of a tidal turbine with its own vertical axis. First results are shown and compared to a full Eulerian simulation. Although the data transmission between both codes works well, discrepancies were found due to abnormal increase of energy in the Lagrangian area. A solution is proposed and explained.

show abstract

“…They have been widely used to predict wind turbines' [8,9] and tidal turbines' [10] performance. With the development of computer science and the increase in computing capacity, numerical modeling has also progressed from one-dimensional to three-dimensional (3D) cases [11], passing through two-dimensional (2D) cases [12]. This last type is a good compromise between computation time and accuracy.…”

Section: Introductionmentioning

confidence: 99%

3D Simulation with Flow-Induced Rotation for Non-Deformable Tidal Turbines

Robin

Bennis

Dauvin

2021

JMSE

View full text Add to dashboard Cite

The overall potential for recoverable tidal energy depends partly on the tidal turbine technologies used. One of problematic points is the minimum flow velocity required to set the rotor into motion. The novelty of the paper is the setup of an innovative method to model the fluid–structure interactions on tidal turbines. The first part of this work aimed at validating the numerical model for classical cases of rotation (forced rotation), in particular, with the help of a mesh convergence study. Once the model was independent from the mesh, the numerical results were tested against experimental data for both vertical and horizontal tidal turbines. The results show that a good correspondence for power and drag coefficients was observed. In the wake, the vortexes were well captured. Then, the fluid drive code was implemented. The results correspond to the expected physical behavior. Both turbines rotated in the correct direction with a coherent acceleration. This study shows the fundamental operating differences between a horizontal and a vertical axis tidal turbine. The lack of experiments with the free rotation speed of the tidal turbines is a limitation, and a digital brake could be implemented to overcome this difficulty.

show abstract

Numerical simulations of biofouling effects on the tidal turbine hydrodynamic

Cited by 10 publications

References 0 publications

Implications of biofouling on cross-flow turbine performance

Implications of biofouling on cross-flow turbine performance

Eulerian Pressure-Velocity/ Lagrangian Vorticity-Velocity Coupling Applied to Wake and Forces Calculation of Biofouled Tidal Turbines

3D Simulation with Flow-Induced Rotation for Non-Deformable Tidal Turbines

Contact Info

Product

Resources

About