NDLI: marineFoam: A Computational Tool for Modelling Chemical Discharge from Marine Fish Farms

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marineFoam: A Computational Tool for Modelling Chemical Discharge from Marine Fish Farms

Content Provider	Semantic Scholar
Copyright Year	2018
Abstract	marineFoam is a new computational fluid dynamics (CFD) tool aimed at modelling the dispersion of anti-parasitic chemicals used during bath treatments to counteract sea lice in fin fish farms. The computational model has been developed within the framework of the opensource, finite volume CFD code OpenFOAM and is designed to be used either as a high-fidelity, stand-alone code or as a complementary tool to inform and improve the lower-order bath treatment models currently promoted by SEPA. An unstructured grid, non-hydrostatic approach is adopted, and the water density is calculated as a function of both salinity and temperature. Boundary conditions allow for tidal currents to be implemented and turbulence is modelled using a 2-equation, unsteady RANS approach. Arbitrary mesh refinement (AMR) is incorporated in the model together with higher order convection schemes to minimise numerical diffusion of the dispersed chemicals. marineFoam has been verified against the state-of-the-art, open-source community ocean model FVCOM with results comparing well with published data. Finally, marineFoam has been shown to produce full 3D, time-dependent solutions for chemical dispersion in a marine coastal loch with complex bathymetry. These results were determined for a physical domain of the order of ~1 km and the computational time involved was approximately 1 hour of CPU time per hour of tidal cycle modelled. This demonstrates that high fidelity CFD results for such scenarios are within practical engineering reach using standard, off-the-shelf PC hardware.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://docs.wixstatic.com/ugd/f6b0cc_1f8246b288d8469fae6126739e7eb2ab.pdf?index=true
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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