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Abstract In the design process of hull form, several candidates of hull forms are generated, and CFD (Computational Fluid Dynamics) analysis is typically used to evaluate the hydrodynamic performance of the candidates. If the performance of the evaluated hull form is not good, it is improved through the iterative process of redesigning or fairing the hull form. However, there is a problem that CFD analysis takes a long time to calculate. As the design period of the ship is limited, the iteration is not sufficient to find the optimal hull form. To solve this problem, in this study, we proposed a method to evaluate the performance within a short time by skipping CFD analysis using a deep learning model. To train a deep learning model for evaluating the performance of hull forms, it takes a long time to generate data and train the model, but once the model is trained well, the performance of the hull form can be estimated quickly using the trained model. The hull forms used for training the model are generated by deforming the reference hull form using FFD (Free Form Deformation). The performances derived from the CFD analysis are used as a ground truth. For the better precision of estimation, various structures of the deep learning model were compared, and we selected an appropriate model to predict performances of the hull forms. By using the proposed model, many candidates can be evaluated when designing the hull form. In addition, the efficiency of the design process of the hull form can be increased by selecting only a few good alternatives and performing CFD. In this study, from data generation for the deep learning model, a prediction model’s structure and learning process were proposed and applied to evaluate the performance of various hull forms.
Publication Date 2022-10-09

Jin-Hyeok Kim, Myung-Il Roh, In-Chang Yeo, Ki-Su Kim, Min-Jae Oh, Sejin Oh, "Estimation Model of Hydrodynamic Performance Using Hull Form Variation and Deep Learning", Proceedings of International Symposium on PRADS(Practical Design of Ships and Other Floating Structures) 2022, Dubrovnik, Croatia, pp. 82, 2022.10.09-13


List of Articles
번호 분류 제목 Publication Date
50 International Conference Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, "Lifting Design for Ships and Offshore Structures Using Non-interpenetration Constraints and Flexible Multibody System Dynamics", Proceedings of ISOPE 2018, Sapporo, Japan, pp. 910-913, 2018.06.10-15 file 2018-06-11
49 International Conference Sung-Jun Lee, Myung-Il Roh, Hye-Won Lee, Jisang Ha, Il-Guk Woo, "Image-based Ship Detection and Classification for Unmanned Surface Vehicle Using Real-Time Object Detection Neural Networks", Proceedings of ISOPE 2018, Sapporo, Japan, 2018.06.10-15 file 2018-06-13
48 International Conference Sung-Woo Park, Myung-Il Roh, Min-Jae Oh, Seong-Hoon Kim, Won-Joon Lee, In-Il Kim, Chang-Yong Kim, "Estimation Model of Energy Efficiency Operational Indicator Using Public Data Based on Big Data Technology", Proceedings of ISOPE 2018, Sapporo, Japan file 2018-06-14
47 International Conference Ki-Su Kim, Myung-Il Roh, Seung-Min Lee, "Flooding Analysis Based on PBD (Position Based Dynamics) for Ships and Offshore Structures", Proceedings of ISOPE 2018, Sapporo, Japan, pp. 955-957, 2018.06.10-15 file 2018-06-14
46 International Conference Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, "Collision Detection and Response between an LPG Tank and a Hull Structure Using Non-Interpenetration Constraints", Proceedings of the 9th ACMD 2018, Xian, China, 2018.08.19-23 file 2018-08-20
45 International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Modeling of a Mooring System Based on Flexible Multibody Dynamics Considering Contact with Seabed", Proceedings of the 9th ACMD 2018, Xian, China, 2018.08.19-23 file 2018-08-20
44 International Conference Seong-Yeob Jeong, Kuk-Jin Kang, Hyun-Soo Kim, Jung-Joong Kim, Myung-Il Roh, "A Study of Ship Safe Voyage Planning in the Northern Sea Route", Proceedings of PACOMS 2018, Jeju, Korea, 2018.10.14-17 file 2018-10-15
43 International Conference Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, "Integrated Simulation Methods Based on Multibody Dynamics in Ships and Offshore Structures", Proceedings of the 32nd Asian-Pacific TEAM 2018, Wuhan, China, pp. 592-596, 2018.10.15-18 file 2018-10-17
42 International Conference Min-Jae Oh, Myung-Il Roh, Sung-Woo Park, Do-Hyun Chun, In-Il Kim, Chang-Yong Kim, Won-Joon Lee, "Estimation of Ship Energy Efficiency from Big Data Analysis", Proceedings of the 32nd Asian-Pacific TEAM 2018, Wuhan, China, pp. 262-264, 2018.10.15-18 file 2018-10-17
41 International Conference Seung-Ho Ham, Myung-Il Roh, Jong-Hyuk Lee, Sung-Jun Lee, "Multi-purpose Simulator for Ships and Offshore Structure", Proceedings of ACDDE 2018, Okinawa, Japan, 2018.11.1-3 file 2018-11-01
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