Influence of inlet and outlet placement on the hydrodynamics of culture tanks for Atlantic salmon
The salmon farming industry has recently shifted to larger culture tanks with greater water flows to optimize the land-based production, but tanks approaching 1000 m3 in volume create challenging hydrodynamics. This paper presents a computational study of four combinations of inlet and outlet design...
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ftnofima:oai:nofima.brage.unit.no:11250/2673496 2023-05-15T15:32:30+02:00 Influence of inlet and outlet placement on the hydrodynamics of culture tanks for Atlantic salmon Gorle, Jagan Terjesen, Bendik Fyhn Summerfelt, Steven T. 2020 application/pdf https://hdl.handle.net/11250/2673496 https://doi.org/10.1016/j.ijmecsci.2020.105944 eng eng Norges forskningsråd: 237856 urn:issn:0020-7403 https://hdl.handle.net/11250/2673496 https://doi.org/10.1016/j.ijmecsci.2020.105944 cristin:1822902 188 International Journal of Mechanical Sciences Peer reviewed Journal article 2020 ftnofima https://doi.org/10.1016/j.ijmecsci.2020.105944 2022-11-18T06:51:07Z The salmon farming industry has recently shifted to larger culture tanks with greater water flows to optimize the land-based production, but tanks approaching 1000 m3 in volume create challenging hydrodynamics. This paper presents a computational study of four combinations of inlet and outlet designs of a commercial land-based aquaculture tank. Windows-based OpenFOAM solvers are used to solve the conservation equations for tank hydrodynamics with an implicit unsteady second-order Eulerian (finite volume) technique on unstructured hybrid meshes. The model is validated by the velocity measurements at discrete locations in the tank using acoustic doppler velocimetry. To understand the dispersion of biosolids in the tank, 500 particles with a uniform size of 200 µm are tracked in the Lagrangian frame. While the tank's Reynolds number varies between 2E6 - 3.5E6 depending on the flow exchange rate, the local Reynolds number at the inlet pipe is about 2E5 which discovers the drag-crisis phenomenon. The effect of inlet and outlet placement on the velocity, vorticity and turbulence is addressed. The existing tank design could be improved using the bottom-drain and corner-inlet options, which strengthens rotational flow with better uniformity. Such design change is also proved to provide better particle removal and thus ensure the improved self-cleaning ability of the tank. publishedVersion Article in Journal/Newspaper Atlantic salmon Nofima Knowledge Archive (Brage) International Journal of Mechanical Sciences 188 105944 |
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Nofima Knowledge Archive (Brage) |
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ftnofima |
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English |
description |
The salmon farming industry has recently shifted to larger culture tanks with greater water flows to optimize the land-based production, but tanks approaching 1000 m3 in volume create challenging hydrodynamics. This paper presents a computational study of four combinations of inlet and outlet designs of a commercial land-based aquaculture tank. Windows-based OpenFOAM solvers are used to solve the conservation equations for tank hydrodynamics with an implicit unsteady second-order Eulerian (finite volume) technique on unstructured hybrid meshes. The model is validated by the velocity measurements at discrete locations in the tank using acoustic doppler velocimetry. To understand the dispersion of biosolids in the tank, 500 particles with a uniform size of 200 µm are tracked in the Lagrangian frame. While the tank's Reynolds number varies between 2E6 - 3.5E6 depending on the flow exchange rate, the local Reynolds number at the inlet pipe is about 2E5 which discovers the drag-crisis phenomenon. The effect of inlet and outlet placement on the velocity, vorticity and turbulence is addressed. The existing tank design could be improved using the bottom-drain and corner-inlet options, which strengthens rotational flow with better uniformity. Such design change is also proved to provide better particle removal and thus ensure the improved self-cleaning ability of the tank. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Gorle, Jagan Terjesen, Bendik Fyhn Summerfelt, Steven T. |
spellingShingle |
Gorle, Jagan Terjesen, Bendik Fyhn Summerfelt, Steven T. Influence of inlet and outlet placement on the hydrodynamics of culture tanks for Atlantic salmon |
author_facet |
Gorle, Jagan Terjesen, Bendik Fyhn Summerfelt, Steven T. |
author_sort |
Gorle, Jagan |
title |
Influence of inlet and outlet placement on the hydrodynamics of culture tanks for Atlantic salmon |
title_short |
Influence of inlet and outlet placement on the hydrodynamics of culture tanks for Atlantic salmon |
title_full |
Influence of inlet and outlet placement on the hydrodynamics of culture tanks for Atlantic salmon |
title_fullStr |
Influence of inlet and outlet placement on the hydrodynamics of culture tanks for Atlantic salmon |
title_full_unstemmed |
Influence of inlet and outlet placement on the hydrodynamics of culture tanks for Atlantic salmon |
title_sort |
influence of inlet and outlet placement on the hydrodynamics of culture tanks for atlantic salmon |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2673496 https://doi.org/10.1016/j.ijmecsci.2020.105944 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
188 International Journal of Mechanical Sciences |
op_relation |
Norges forskningsråd: 237856 urn:issn:0020-7403 https://hdl.handle.net/11250/2673496 https://doi.org/10.1016/j.ijmecsci.2020.105944 cristin:1822902 |
op_doi |
https://doi.org/10.1016/j.ijmecsci.2020.105944 |
container_title |
International Journal of Mechanical Sciences |
container_volume |
188 |
container_start_page |
105944 |
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1766362992097624064 |