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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 Nam-Kug Ku, Se-Yong Jeong, Myung-Il Roh, Hyun-Kyoung Shin, Sol Ha, Jung-Woo Hong, "Layout Method of a FPSO Using the Optimization Technique", Proceedings of OMAE 2014, San Francisco, USA, pp. 1-11, 2014.06.08-13 file 2014-06-10
49 International Conference Nam-Kug Ku, Sol Ha, Ho-Jin Hwang, Ki-Su Kim, Kyu-Yeul Lee, Myung-Il Roh, "Program of Scenario Management for Simulation of Lifting Block Using Crane", Proceedings of ISOPE(International Society of Offshore and Polar Engineers) 2014, Busan, Korea, pp. 838-846, 2014.06.15-20 file 2014-06-17
48 International Conference Nam-Kug Ku, Sol Ha, Myung-Il Roh, "Crane Modeling and Simulation in Offshore Structure Building Industry", Proceedings of ICCMS(International Conference on Computer Modeling and Simulation) 2014, Barcelona, Spain, pp. 1-7, 2014.02.20-21 file 2014-02-20
47 International Conference Nam-Kug Ku, Sol Ha, Myung-Il Roh, Kyu-Yeul Lee, "Development of a Kernel for Dynamic Analysis of Various Types of Multi-Crane in Shipyard", Proceedings of ISOPE(International Society of Offshore and Polar Engineers) 2013, Alaska, USA, pp. 693-701, 2013.06.30-07.05 file 2013-06-30
46 International Conference Nam-kug Ku, Sol Ha, Myung-Il Roh, Kyu-Yeul Lee, "Dynamic Response Analysis of Multibody System in Discrete Event Simulation", Proceedings of ICORES(International Conference on Operations Research and Enterprise Systems) 2012, Algarve, Portugal, pp. 447-453, 2012.02.04-06 file 2012-02-04
45 International Conference Sang-Hyun Lee, Myung-Il Roh, Seung-Min Lee, Ki-Su Kim, "Optimization Method for the Arrangement of LNG FPSO Considering Stability, Safety, Operability, and Maintainability", Proceedings of IMDC 2018, Helsinki, Finland, 2018.06.10-14 file 2018-06-11
44 International Conference Sang-Rai Cho, Jong-Min Kim, Young-Hun Kim, Joo-Sung Lee, Myung-Il Roh, "Towards More Rational Design of Ship Structures against Collisions", Proceedings of ICCGS(International Conference on Collision and Grounding of Ships) 2013, Trondheim, Norway, pp. 187-195, 2013.06.17-19 file 2013-06-17
43 International Conference Se-Yong Jeong, Seong-Ho Seo, Myung-Il Roh, "A Method for Determining a Ship Economic Route for Fuel Saving", Proceedings of ISGMA(International Symposium on Green Manufacturing and Applications) 2012, Jeju, Korea, pp. 1-5, 2012.08.27-29 file 2012-08-27
42 International Conference Seong-Ho Seo, Myung-Il Roh, Nam-Kug Ku, Kyu-Yeul Lee, "Dynamic Response Simulation of an Offshore Wind Turbine Suspended by a Floating Crane", Proceedings of ISGMA(International Symposium on Green Manufacturing and Applications) 2012, Jeju, Korea, pp. 1-7, 2012.08.27-29 file 2012-08-27
41 International Conference Seong-Hoon Kim, Myung-Il Roh, Min-Jae Oh, Namkug Ku, Sehyun Myung, "Big Data Platform for PLM (Product Lifecycle Management) Systems in Shipbuilding and Offshore Industry", Proceedings of ICCAS 2017, Singapore, Singapore, 2017.09.26-28 file 2017-09-27
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