Development of large fish farm numerical modeling techniques with in situ mooring tension comparisons

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Date
2006-07-02Author
Fredriksson, David W.
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DeCew, Judson C.
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Tsukrov, Igor
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Swift, M. R.
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Irish, James D.
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https://hdl.handle.net/1912/1595As published
https://doi.org/10.1016/j.aquaeng.2006.10.001Keyword
Mooring analysis; Finite elements; Flow reduction; Fouled netsAbstract
A study is conducted to validate a numerical model for calculating mooring system
tensions of a large fish farm containing 20 net pens in the absence of waves. The model is
forced using measured current velocity values obtained outside of the farm. Mooring line
tensions calculated with the numerical model are compared with load cell field data sets.
The approach considers current velocity reduction and load characteristics that occur
through the net pen system for both clean and fouled net conditions. Without accounting
for the reduction, the numerical model produces excessively conservative results. With
reduction, a substantial improvement occurs. Understanding these differences will help
to establish appropriate safety factors when designing large marine fish farms using the
model. Additional validation studies should be conducted with wave and current forcing
to investigate the modeling large fish farms for exposed or open ocean sites.
Description
Author Posting. © Elsevier B.V., 2006. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Aquacultural Engineering 36 (2007): 137-148, doi:10.1016/j.aquaeng.2006.10.001.