Comparative analysis of seakeeping methods: numerical, software simulation and experimental study
Abstract
The current study case presents a comprehensive comparison of seakeeping analysis methods, utilizing the seakeeping numerical analysis based on Lewis’s form description of a hull, Ansys Aqwa, and experimental data obtained from the towing tank of the Faculty of Naval Architecture in Galati. The primary objective of this study is to assess the accuracy and reliability of two numerical approaches in predicting the seakeeping performance of a vessel under varying conditions. The experiment was carried out under two scenarios, one with the model at zero speed and another with the model towed at 1.28 m/s and 180o heading angle. The diverse set of conditions aimed to simulate real-world scenarios and capture the dynamic nature of ship motions in waves. The employing of Lewis forms numerical analysis, Ansys Aqwa simulation, and experimental data, the results were compared and evaluated in terms of their accuracy and agreement.
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References
[2]. Ansys Workbench, “Aqwa User Manual”, 2023.
[3]. Obreja, D., 2013, “Survey Vessel Caspica. Model Resistance Tests”, Report No. 617, “Dunarea de Jos” University and SDG Ship Design Group, Galati.
[4]. DNVGL, 2012, “Modeling and Analysis of Marine Operations”, Recommended Practice, DNV-RP-H103, https://rules.dnvgl.com.
[5]. ITTC, 2005, “Testing and Extrapolation Methods, Loads and Responses on Seakeeping Experiments”, Recommended Procedures and Guidelines, 7.5-02-07-02.1, International Towing Tank Conference, http://ittc.sname.org/.
[6]. ITTC, 2011, “Ship Models”, Recommended Procedures and Guidelines 7.5-01.01.01, International Towing Tank Conference, http://ittc.sname.org/.
[7]. Domnisoru, L., "Ship dynamics. Oscillations and vibrations”, Publishing House ETB, Bucharest 2021
[8]. Burlacu, E., Domnisoru, L., Obreja, D., "Seakeeping prediction of a survey vessel operating in the Caspian Sea", No. OMAE 2018-77126, ASME, Madrid, 2018.
[9]. Pacuraru, F., Domnisoru, L., Pacuraru, S., “On the comparative seakeeping analysis of the full-scale KCS by several hydrodynamic approaches”, JMSE, 8(12), 962, 2020.
