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Flow through and around fish farming...

Patursson, Oystein.

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Flow through and around fish farming nets.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Flow through and around fish farming nets./
Author:	Patursson, Oystein.
Description:	144 p.
Notes:	Adviser: M. Robinson Swift.
Contained By:	Dissertation Abstracts International69-03B.
Subject:	Agriculture, Fisheries and Aquaculture. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3308384
ISBN:	9780549548812

Flow through and around fish farming nets.
Patursson, Oystein.

Flow through and around fish farming nets. - 144 p.

Adviser: M. Robinson Swift.

Thesis (Ph.D.)--University of New Hampshire, 2008.

Computational fluid dynamics (CFD) modeling, tow tank and field measurements were used to investigate current flow through and around net panels and cages. For the numerical computations a porous media model was used to represent the net allowing efficient computation of both exterior and interior flow fields. The model was calibrated using tow tank measurements on a net panel at different velocities and angles of attack. The CFD method was able to reproduce the drag- and lift coefficients of the net panel and the velocity reduction behind the net panel with satisfactory accuracy.

ISBN: 9780549548812Subjects--Topical Terms:

1020913
Agriculture, Fisheries and Aquaculture.

Flow through and around fish farming nets.
LDR:02318nam 2200301 a 45 001 953862
005 20110621
008 110622s2008 ||||||||||||||||| ||eng d
020 $a 9780549548812
035 $a (UMI)AAI3308384
035 $a AAI3308384
040 $a UMI $c UMI
100 1 $a Patursson, Oystein. $3 1277336
245 1 0 $a Flow through and around fish farming nets.
300 $a 144 p.
500 $a Adviser: M. Robinson Swift.
500 $a Source: Dissertation Abstracts International, Volume: 69-03, Section: B, page: 1878.
502 $a Thesis (Ph.D.)--University of New Hampshire, 2008.
520 $a Computational fluid dynamics (CFD) modeling, tow tank and field measurements were used to investigate current flow through and around net panels and cages. For the numerical computations a porous media model was used to represent the net allowing efficient computation of both exterior and interior flow fields. The model was calibrated using tow tank measurements on a net panel at different velocities and angles of attack. The CFD method was able to reproduce the drag- and lift coefficients of the net panel and the velocity reduction behind the net panel with satisfactory accuracy.
520 $a The approach was validated for a small size gravity cage by comparing CFD predictions with tow tank measurements of drag force on the cage and velocity reduction inside the cage and in the wake region. The modeled drag force was higher than the measured drag force. The modeled current compared well with the measured current inside the cage, but the reduction was underpredicted in the wake of the cage.
520 $a Full scale simulations were performed for a cage with a clean net and a biofouled net and compared with field measurements of a cage fouled with jellyfish. The measured data compared well with model predictions for the biofouled net. Flushing rates were calculated for both the clean and the biofouled net cases. When the net was changed from clean to biofouled, flushing time increased by up to 44% and drag force increased by up to 80%.
590 $a School code: 0141.
650 4 $a Agriculture, Fisheries and Aquaculture. $3 1020913
650 4 $a Engineering, Marine and Ocean. $3 1019064
690 $a 0547
690 $a 0792
710 2 $a University of New Hampshire. $3 1017788
773 0 $t Dissertation Abstracts International $g 69-03B.
790 $a 0141
790 1 0 $a Swift, M. Robinson, $e advisor
791 $a Ph.D.
792 $a 2008
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3308384