Bow shape modification through multi-objective hydrodynamic optimization: Methodology comparison between CAD-based FreeForm Deformation and Mesh-based Radial Basis Function approach
Marine industrial engineering face crucial challenges because of environmental footprint of vehicles, global recession, construction, and operation cost. Meanwhile, Shape optimization is the key feature to improve ship efficiency and ascertain better design. Accordingly, the present paper proposes an automated optimization framework for ship hullform modification to reduce total resistance at two cruise and sprint speeds. The case study is a bow shape of a wave-piercing bow trimaran hull. To this end, a multi-objective hydrodynamic problem needs to be solved. A combined optimization strategy using CFD hullform optimization is presented using the software tools STAR-CCM+ and SHERPA algorithm as optimizer. Furthermore, a comparison is made between CAD-based and Mesh-based parametrization techniques. Comparison between geometry regeneration methods is performed to present a practical and efficient parametrization tool. Design variables are control points of FreeForm Deformation (FFD) for CAD-based method and Radial Basis Function (RBF) for Mesh-based method. The optimization results show a 4.77% and 2.47% reduction in the total resistance at cruise and sprint speed, respectively.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/14750902
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Supplemental Notes:
- © IMechE 2022.
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Authors:
- Ghadimi, Parviz
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0000-0002-9315-5428
- Nazemian, Amin
- Publication Date: 2022-8
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 658-675
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Serial:
- Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment
- Volume: 236
- Issue Number: 3
- Publisher: Sage Publications, Incorporated
- ISSN: 1475-0902
- EISSN: 2041-3084
- Serial URL: http://pim.sagepub.com/
Subject/Index Terms
- TRT Terms: Bows; Design; Hydrodynamics; Marine engineering; Multi hulled ships; Ships; Water waves
- Subject Areas: Design; Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;
Filing Info
- Accession Number: 01855715
- Record Type: Publication
- Files: TRIS
- Created Date: Aug 24 2022 3:02PM