Numerical Modeling and Optimization of Open-Ocean Aeration Systems
The coastal regions of Nova Scotia are prone to warmer ocean temperatures resulting in lower dissolved oxygen (DO) levels during the summer months. DO levels below 6 mg/L lead to reduced feed conversion, growth, and welfare of Atlantic salmon in open-ocean pens. An aeration system that allows for th...
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ftdalhouse:oai:DalSpace.library.dal.ca:10222/73901 2023-05-15T15:30:49+02:00 Numerical Modeling and Optimization of Open-Ocean Aeration Systems Totten, Jonathan Department of Process Engineering and Applied Science Master of Applied Science n/a Suzanne Budge Stephen Kuzak Dominic Groulx Jan Haelssig Adam Donaldson Not Applicable 2018-04-30T12:42:49Z http://hdl.handle.net/10222/73901 en eng http://hdl.handle.net/10222/73901 2018 ftdalhouse 2022-03-06T00:10:30Z The coastal regions of Nova Scotia are prone to warmer ocean temperatures resulting in lower dissolved oxygen (DO) levels during the summer months. DO levels below 6 mg/L lead to reduced feed conversion, growth, and welfare of Atlantic salmon in open-ocean pens. An aeration system that allows for the delivery of supplemental oxygen to open-ocean aquaculture pens during conditions of low DO has the potential to improve key performance indicators of Atlantic salmon. A transient one-dimensional bubble plume model coupled with an ambient environment model was developed and validated using hydrodynamic and mass transfer case studies. The model was used to develop heuristics for the number of diffusers, spacing of diffusers, and the volume of air and oxygen-enriched air to maintain DO levels above the recommended minimum of 6 mg/L. Six trilobed diffusers using air are required to maintain the DO in an open-ocean pen above 6 mg/L. Other/Unknown Material Atlantic salmon Dalhousie University: DalSpace Institutional Repository |
institution |
Open Polar |
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Dalhousie University: DalSpace Institutional Repository |
op_collection_id |
ftdalhouse |
language |
English |
description |
The coastal regions of Nova Scotia are prone to warmer ocean temperatures resulting in lower dissolved oxygen (DO) levels during the summer months. DO levels below 6 mg/L lead to reduced feed conversion, growth, and welfare of Atlantic salmon in open-ocean pens. An aeration system that allows for the delivery of supplemental oxygen to open-ocean aquaculture pens during conditions of low DO has the potential to improve key performance indicators of Atlantic salmon. A transient one-dimensional bubble plume model coupled with an ambient environment model was developed and validated using hydrodynamic and mass transfer case studies. The model was used to develop heuristics for the number of diffusers, spacing of diffusers, and the volume of air and oxygen-enriched air to maintain DO levels above the recommended minimum of 6 mg/L. Six trilobed diffusers using air are required to maintain the DO in an open-ocean pen above 6 mg/L. |
author2 |
Department of Process Engineering and Applied Science Master of Applied Science n/a Suzanne Budge Stephen Kuzak Dominic Groulx Jan Haelssig Adam Donaldson Not Applicable |
author |
Totten, Jonathan |
spellingShingle |
Totten, Jonathan Numerical Modeling and Optimization of Open-Ocean Aeration Systems |
author_facet |
Totten, Jonathan |
author_sort |
Totten, Jonathan |
title |
Numerical Modeling and Optimization of Open-Ocean Aeration Systems |
title_short |
Numerical Modeling and Optimization of Open-Ocean Aeration Systems |
title_full |
Numerical Modeling and Optimization of Open-Ocean Aeration Systems |
title_fullStr |
Numerical Modeling and Optimization of Open-Ocean Aeration Systems |
title_full_unstemmed |
Numerical Modeling and Optimization of Open-Ocean Aeration Systems |
title_sort |
numerical modeling and optimization of open-ocean aeration systems |
publishDate |
2018 |
url |
http://hdl.handle.net/10222/73901 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
http://hdl.handle.net/10222/73901 |
_version_ |
1766361274882457600 |