High porosity net drag at a low angle of attack in application to a representative prawn trawl

The presented work investigated the extent by which Reynolds number determines the drag coefficient for high porosity nets at a low angle of attack. A simple prawn trawl model that incorporates the main design features of prawn trawls employed in Australia was developed. Four trawl models of various...

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Published in:Volume 7: Ocean Space Utilization; Ocean Renewable Energy
Main Authors: Balash, C, Bose, N, Binns, J, Sterling, D
Format: Conference Object
Language:English
Published: American Society for Mechanical Engineers (ASME) 2012
Subjects:
Engineering
Maritime Engineering
Ocean Engineering
Arctic
Online Access:https://doi.org/10.1115/OMAE2012-83083
http://ecite.utas.edu.au/79059
id ftunivtasecite:oai:ecite.utas.edu.au:79059
record_format openpolar
spelling ftunivtasecite:oai:ecite.utas.edu.au:79059 2023-05-15T14:27:02+02:00 High porosity net drag at a low angle of attack in application to a representative prawn trawl Balash, C Bose, N Binns, J Sterling, D 2012 https://doi.org/10.1115/OMAE2012-83083 http://ecite.utas.edu.au/79059 en eng American Society for Mechanical Engineers (ASME) Balash, C and Bose, N and Binns, J and Sterling, D, High porosity net drag at a low angle of attack in application to a representative prawn trawl, Proceedings of the 31st International Conference on Ocean, Offshore and Arctic Engineering, 1-6 July 2012, Rio de Janeiro, Brazil, pp. 1-6. ISBN 978-0-7918-4494-6 (2012) [Refereed Conference Paper] http://ecite.utas.edu.au/79059 Engineering Maritime Engineering Ocean Engineering Refereed Conference Paper PeerReviewed 2012 ftunivtasecite https://doi.org/10.1115/OMAE2012-83083 2019-12-13T21:44:44Z The presented work investigated the extent by which Reynolds number determines the drag coefficient for high porosity nets at a low angle of attack. A simple prawn trawl model that incorporates the main design features of prawn trawls employed in Australia was developed. Four trawl models of various high porosities were tested in a flume tank with respect to drag and shape over a range of flow velocities. The physical trawl model was analysed as a system of independent plane net sheets, each with an orientation to the flow estimated from analysis of stereo-vision data. The main finding was that the drag coefficient was weakly dependent on the Reynolds number in the range typical for prawn trawl operations, 1000 < Re < 1700 . These combined findings imply that trawler operators can approximately estimate prawn net drag from a function containing trawl twine area, towing speed and spread ratio. Conference Object Arctic eCite UTAS (University of Tasmania) Volume 7: Ocean Space Utilization; Ocean Renewable Energy 1 6
institution Open Polar
collection eCite UTAS (University of Tasmania)
op_collection_id ftunivtasecite
language English
topic Engineering
Maritime Engineering
Ocean Engineering
spellingShingle Engineering
Maritime Engineering
Ocean Engineering
Balash, C
Bose, N
Binns, J
Sterling, D
High porosity net drag at a low angle of attack in application to a representative prawn trawl
topic_facet Engineering
Maritime Engineering
Ocean Engineering
description The presented work investigated the extent by which Reynolds number determines the drag coefficient for high porosity nets at a low angle of attack. A simple prawn trawl model that incorporates the main design features of prawn trawls employed in Australia was developed. Four trawl models of various high porosities were tested in a flume tank with respect to drag and shape over a range of flow velocities. The physical trawl model was analysed as a system of independent plane net sheets, each with an orientation to the flow estimated from analysis of stereo-vision data. The main finding was that the drag coefficient was weakly dependent on the Reynolds number in the range typical for prawn trawl operations, 1000 < Re < 1700 . These combined findings imply that trawler operators can approximately estimate prawn net drag from a function containing trawl twine area, towing speed and spread ratio.
format Conference Object
author Balash, C
Bose, N
Binns, J
Sterling, D
author_facet Balash, C
Bose, N
Binns, J
Sterling, D
author_sort Balash, C
title High porosity net drag at a low angle of attack in application to a representative prawn trawl
title_short High porosity net drag at a low angle of attack in application to a representative prawn trawl
title_full High porosity net drag at a low angle of attack in application to a representative prawn trawl
title_fullStr High porosity net drag at a low angle of attack in application to a representative prawn trawl
title_full_unstemmed High porosity net drag at a low angle of attack in application to a representative prawn trawl
title_sort high porosity net drag at a low angle of attack in application to a representative prawn trawl
publisher American Society for Mechanical Engineers (ASME)
publishDate 2012
url https://doi.org/10.1115/OMAE2012-83083
http://ecite.utas.edu.au/79059
genre Arctic
genre_facet Arctic
op_relation Balash, C and Bose, N and Binns, J and Sterling, D, High porosity net drag at a low angle of attack in application to a representative prawn trawl, Proceedings of the 31st International Conference on Ocean, Offshore and Arctic Engineering, 1-6 July 2012, Rio de Janeiro, Brazil, pp. 1-6. ISBN 978-0-7918-4494-6 (2012) [Refereed Conference Paper]
http://ecite.utas.edu.au/79059
op_doi https://doi.org/10.1115/OMAE2012-83083
container_title Volume 7: Ocean Space Utilization; Ocean Renewable Energy
container_start_page 1
op_container_end_page 6
_version_ 1766300581026070528

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