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Haichao Chang, Chengjun Wang, Zuyuan Liu, Baiwei Feng, Chengsheng Zhan and Xide Cheng
Hull form optimization becomes prone to the curse of dimensionality as the number of design variables increases. The traditional sensitivity analysis method requires massive computational fluid dynamics (CFD) computations and analyzing the effects of all...
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Min-Kyung Lee and Inwon Lee
In this study, deep neural network (DNN) and transfer learning (TL) techniques were employed to predict the viscous resistance and wake distribution based on the positions of flow control fins (FCFs) applied to containerships of various sizes. Both metho...
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Shenglong Zhang
A high-accuracy objective function evaluation method is crucial in ship hull form optimization. This study proposes a novel approximate ship hull form optimization framework using the deep learning technology, deep belief network algorithm. To illustrate...
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Baiwei Feng, Chengsheng Zhan, Zuyuan Liu, Xide Cheng and Haichao Chang
Basis functions are key in constructing interpolation equations in hull surface modification based on radial basis functions (RBF) interpolation. However, few have studied the selection of basis functions in depth. By comparing several typical basis func...
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Jin-Won Yu, Min-Kyung Lee, Yang-Ik Kim, Sung-Bu Suh and Inwon Lee
Energy saving hull-form design for a fishing vessel.
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Rui Deng, Shigang Wang, Yuxiao Hu, Yuquan Wang and Tiecheng Wu
In this study, the effect of joint optimization of the principal dimensions and hull form on the hydrodynamic performance of a bulk carrier was studied. In the first part of the joint optimization process, fast principal-dimension optimization of the ori...
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Gregory J. Grigoropoulos, Christos Bakirtzoglou, George Papadakis and Dimitrios Ntouras
The present paper proposes a new mixed-fidelity method to optimize the shape of ships using genetic algorithms (GA) and potential flow codes to evaluate the hydrodynamics of variant hull forms, enhanced by a surrogate model based on an Artificial Neural ...
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Qiang Zheng, Bai-Wei Feng, Zu-Yuan Liu and Hai-Chao Chang
The particle swarm optimisation (PSO) algorithm has been widely used in hull form optimisation owing to its feasibility and fast convergence. However, similar to other intelligent algorithms, PSO also has the disadvantages of local premature convergence ...
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Marco Polo Espinoza Haro, Jong-Chun Park, Dong-Hyun Kim and Sung-Bum Lee
In the present study, a 2-ton class seaweed harvesting boat was optimized by employing a W-shape hull form to reduce roll motion due to wake-wash from passing boats. A series of numerical simulations were conducted using Star-CCM+, a commercial CFD (comp...
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Apostolos Papanikolaou, Yan Xing-Kaeding, Johannes Strobel, Aphrodite Kanellopoulou, George Zaraphonitis and Edmund Tolo
The present study focuses on the hydrodynamic hull form optimization of a zero emission, battery driven, fast catamaran vessel. A two-stage optimization procedure was implemented to identify in the first stage (global optimization) the optimum combinatio...
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