CFD-based multi-objective optimization of a waterjet-propelled trimaran

Guo, J.; Zhang, Yan; Chen, Zuogang; Feng, Yanhui

doi:10.1016/j.oceaneng.2019.106755

Cited by 30 publications

(5 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lately, a huge potential of accurate and reliable methods based on Computational Fluid Dynamics (CFD), as an alternative to towing tank experiments, has been proven for the prediction of ship resistance and eff ective power [18]. There are numerous studies in the literature based on the application of CFD for various problems in ship hydrodynamics [19,20,21].…”

Section: Introduction / Uvod *mentioning

confidence: 99%

Reconstruction of Hull Form of Traditional Croatian Fishing Vessel and Prediction of Eff ective Power

Degiuli¹,

Farkaš²,

Martić³

et al. 2023

Naše more

View full text Add to dashboard Cite

Recently, an increasing attention is given to preservation and popularization of Croatian traditional boat building, which plays an important role in Croatian cultural and national heritage. Reconstruction and revitalization projects of individual historical vessels are key factors within preservation process, where the lack of technical documentation is one of the main issues. In this paper, a simple and efficient procedure for taking offsets of a traditional fishing vessel guc is presented to document and preserve the traditional Croatian vessel form. A 3D model of a guc is generated using the points on the hull surface obtained by the manual measurement and a fairing process. Numerical simulations of the resistance test for a fishing vessel are carried out for a wide range of speeds, and the curve of effective power as a function of vessel speed is provided.

show abstract

Section: Introduction / Uvod *mentioning

confidence: 99%

Reconstruction of Hull Form of Traditional Croatian Fishing Vessel and Prediction of Eff ective Power

Degiuli¹,

Farkaš²,

Martić³

et al. 2023

Naše more

View full text Add to dashboard Cite

show abstract

“…The self-blending method was combined with CFD solver and MIGA optimizer algorithm for ship hull modification. Another recent research about optimization of ship and propulsion system and their interactions has been conducted by Guo et al 20 An optimization study of a waterjet-propelled trimaran was performed by using surrogate model and direct NSGA-II optimization algorithm. Total resistance, thrust, and torque of propulsion system, and the power consumption are the objectives of Guo et al investigation that presents a true optimization.…”

Section: Introductionmentioning

confidence: 99%

Bow shape modification through multi-objective hydrodynamic optimization: Methodology comparison between CAD-based FreeForm Deformation and Mesh-based Radial Basis Function approach

Ghadimi

Nazemian

2022

Proceedings of the Institution of Mechanical Engineers, Part M:

View full text Add to dashboard Cite

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.

show abstract

“…The Free Form Deformation (FFD) method is a good geometry reconstruction method for deforming the 3D geometry model. It has been widely used in the different optimization fields (Guo et al, 2020;Xu et al, 2019;Yu et al, 2016;Zhang, Zhang, Yang, et al, 2018). Garg et al (2017) used the FFD method to change the hydrofoil surface with 200 control points.…”

Section: Introductionmentioning

confidence: 99%