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Authors: Eirikur Jonsson ; Leifur Leifsson and Slawomir Koziel

Affiliation: Reykjavik University, Iceland

Keyword(s): Trawl-doors, CFD, Design Optimization, Space Mapping, Surrogate-based Optimization, Variable-resolution Modeling, Simulation-driven Design.

Abstract: Rising fuel prices and inefficient fishing gear are hampering the fishing industry. In this paper, we present a computational fluid dynamic (CFD) model to analyse the hydrodynamic performance of trawl-doors, which are a major contributor to the high fuel consumption of fishing vessels. Furthermore, we couple the CFD model with an efficient design optimization technique and demonstrate how to redesign the trawl-door shapes for minimum drag at a given lift. The optimization techinique is surrogate-based and employs a coarse discritization CFD model with relaxed convergence criteria. The surrogate model is constructed using the physics based low-fidelity model and space mapping. The CFD model is applied to the analysis of current trawl-door shapes and reveals that they are operated at low efficiency (with lift-to-drag ratios lower than 1), mainly due to massively separated flow. An example design optimization case study reveals that the angle of attack can be reduced significantly by re -positioning and tilting the leading-edge slats. The performance can be improved by as much as 24 times (attaining lift-ro-drag ratios around 24). (More)

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Paper citation in several formats:
Jonsson, E.; Leifsson, L. and Koziel, S. (2012). Trawl-door Performance Analysis and Design Optimization with CFD. In Proceedings of the 2nd International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2012) - SDDOM; ISBN 978-989-8565-20-4; ISSN 2184-2841, SciTePress, pages 479-488. DOI: 10.5220/0004163904790488

@conference{sddom12,
author={Eirikur Jonsson. and Leifur Leifsson. and Slawomir Koziel.},
title={Trawl-door Performance Analysis and Design Optimization with CFD},
booktitle={Proceedings of the 2nd International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2012) - SDDOM},
year={2012},
pages={479-488},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004163904790488},
isbn={978-989-8565-20-4},
issn={2184-2841},
}

TY - CONF

JO - Proceedings of the 2nd International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2012) - SDDOM
TI - Trawl-door Performance Analysis and Design Optimization with CFD
SN - 978-989-8565-20-4
IS - 2184-2841
AU - Jonsson, E.
AU - Leifsson, L.
AU - Koziel, S.
PY - 2012
SP - 479
EP - 488
DO - 10.5220/0004163904790488
PB - SciTePress

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