High-resolution computational fluid dynamics modelling of suspended shellfish structures
Résumé
Aquaculture structures are responsible for flow disturbances that extend
over a large range of scales. In the case of shellfish aquaculture, those scales extend
from the size of an individual shellfish to the size of a whole farm with intermediate
scales being the size of a shellfish structure or of a block of shellfish structures. The
influence of block spacing and angle is investigated by the mean of a 2D high resolution
computational fluid dynamics model. Block angle is found to be the main relevant
parameter controlling to a large extent the mixing generated by the shellfish structures.
Strong sensitivity is found for small angles. Nevertheless, it is shown that for a limited
number of blocks, upstream turbulence still dominates the degree of the total mixing
within the farm, and that total flow reduction is little affected by the orientation of
the blocks. A simple analytical model is presented that predicts most of the numerical
results.
Domaines
Océanographie
Origine : Fichiers produits par l'(les) auteur(s)
Loading...