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No 1 (109) 2021 Vol. 28 INSTITUTE OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING No 1 (109) 2021 Vol. 28 ADDRESS OF PUBLISHER & EDITOR’S OFFICE: GDAŃSK UNIVERSITY OF TECHNOLOGY Institute 4 Hossein Tahmasvand, Hamid Zeraatgar of Naval Architecture A COMBINED METHOD TO PREDICT IMPACT PRESSURE ON PLANING CRAFT and Ocean Engineering 16 Sebastian Bielicki G. Narutowicza 11/12 PREDICTION OF SHIP MOTIONS IN IRREGULAR WAVES BASED ON RESPONSE 80-233 Gdańsk, POLAND AMPLITUDE OPERATORS EVALUATED EXPERIMENTALLY IN NOISE WAVES 28 Boyang Li, Rui Zhang, Yajing Li, Baoshou Zhang, Chao Guo STUDY OF A NEW TYPE OF FLETTNER ROTOR IN MERCHANT SHIPS 42 Ewelina Ciba HEAVE MOTION OF A VERTICAL CYLINDER WITH HEAVE PLATES EDITORIAL STAFF: 48 Wenbin Lai, Yonghe Xie, Detang Li NUMERICAL STUDY ON THE OPTIMIZATION OF HYDRODYNAMIC Wiesław Tarełko PERFORMANCE OF OSCILLATING BUOY WAVE ENERGY CONVERTER | Editor in Chief 59 Zhaoyi Zhu, Xiaowen Li, Qinglin Chen, Yingqiang Cai, Yunfeng Xiong Janusz Kozak Simulations and tests of composite marine structures under | Deputy Editors-in-Chief low-velocity impact Wojciech Litwin 72 Przemysław Król | Deputy Editors-in-Chief HYDRODYNAMIC STATE OF ART REVIEW: ROTOR – STATOR MARINE PROPULSOR SYSTEMS DESIGN 83 Fatih Okumuş, Araks Ekmekçioğlu, Selin Soner Kara MODELLING SHIPS MAIN AND AUXILIARY ENGINE POWERS WITH REGRESSION- BASED MACHINE LEARNING ALGORITHMS Price: 97 Valerii Kuznetsov, Boris Dymo, Svitlana Kuznetsova, Mykola Bondarenko, single issue: 25 PLN Andrii Voloshyn IMPROVEMENT OF THE CARGO FLEET VESSELS POWER PLANTs ECOLOGICAL Prices for abroad INDExeS BY development of the Exhaust GAS SYSTEMS single issue: 105 Mengqi Cui, Yingwei Lu, Jiahao He, Lei Ji, Hui Wang, Shaojun Liu - in Europe EURO 15 A COMPARATIVE LIFE CYCLE ASSESSMENT OF MARINE DESOX SYSTEMS - overseas USD 20 116 Jerzy Girtler, Jacek Rudnicki The matter of decision-making control over operation processes WEB: of marine power plant systems with the use of their models in pg.edu.pl/pmr the form of semi-Markov decision-making processes e-mail : pmr@pg.edu.pl 127 Ryszard Buczkowski, Bartłomiej Żyliński FINITE ELEMENT FATIGUE ANALYSIS OF UNSUPPORTED CRANE ISSN 1233-2585 ADDRESS OF PUBLISHER 136 Xiaofeng Xu, Deqaing Cui, Yun Li, Yingjie Xiao & EDITOR’S OFFICE: RESEARCH ON SHIP TRAJECTORY EXTRACTION BASED ON MULTI- ATTRIBUTE DBSCAN OPTIMISATION ALGORITHM GDAŃSK UNIVERSITY 149 Zaopeng Dong, Yang Liu, Hao Wang, Tao Qin OF TECHNOLOGY Method of Cooperative Formation Control for Underactuated USVs Based on Nonlinear Backstepping and Cascade System Theory Institute 163 Józef Lisowski of Naval Architecture COMPUTATIONAL INTELLIGENCE IN MARINE CONTROL ENGINEERING and Ocean Engineering EDUCATION G. Narutowicza 11/12 80-233 Gdańsk, POLAND Editorial POLISH MARITIME RESEARCH is the scientific journal with a worldwide circulation. This journal is published quarterly (four times a year) by Gdansk University of Technology (GUT). On September, 1994, the first issue of POLISH MARITIME RESEARCH was published. The main objective of this journal is to present original research, innovative scientific ideas, and significant findings and application in the field: of Naval Architecture, Ocean Engineering and Underwater Technology, The scope of the journal covers selected issues related to all phases of product lifecycle and corresponding technologies for offshore floating and fixed structures and their components. All researchers are invited to submit their original papers for peer review and publications related to methods of the design; production and manufacturing; maintenance and operational processes of such technical items as: t all types of vessels and their equipment, t fixed and floating offshore units and their components, t autonomous underwater vehicle (AUV) and remotely operated vehicle (ROV). We welcome submissions from these fields in the following technical topics: t ship hydrodynamics: buoyancy and stability; ship resistance and propulsion, etc., t structural integrity of ship and offshore unit structures: materials; welding; fatigue and fracture, etc., t marine equipment: ship and offshore unit power plants: overboarding equipment; etc. Scientific Board Chairman : Prof. JERZY GIRTLER - Gdańsk University of Technology, Poland Vice-chairman : Prof. CARLOS GUEDES SOARES, Universidade de Lisboa, Lisbon, Portugal Vice-chairman : Prof. MIROSŁAW L. WYSZYŃSKI - University of Birmingham, United Kingdom Prof. POUL ANDERSEN Prof. STOJCE DIMOV ILCEV Prof. JERZY MERKISZ Technical University of Denmark Durban University of Technology Poznan University of Technology Kongens Lyngby Durban Poznan Denmark South Africa Poland Prof. JIAHN-HORNG CHEN Prof. YORDAN GARBATOV Prof. VALERI NIEKRASOV National Taiwan Ocean University Universidade de Lisboa, Admiral Makarov National University Keelung Lisbon of Shipbuilding Taiwan Portugal Mikolaiv Ukraine Prof. VINCENZO CRUPI Prof. STANISLAW GUCMA University of Messina Maritime University of Szczecin Prof. SERHIY SERBIN Messina Szczecin Admiral Makarov National Italy Poland University of Shipbuilding Mikolaiv Prof. MAREK DZIDA Prof. ANTONI ISKRA Ukraine Gdansk University of Technology Poznan University of Technology Gdansk Poznan Prof. JOZEF SZALA Poland Poland UTP University of Science and Technology Dr. KATRIEN ELOOT, Prof. JAN KICINSKI Bydgoszcz Flanders Hydraulics Research, Institute of Fluid-Flow Machinery - Poland Antwerpen Polish Academy of Sciences Belgium Gdansk Prof. HOANG ANH TUAN Poland Ho Chi Minh City Prof. ODD MAGNUS FALTINSEN University of Technology Norwegian University of Science and Prof. ZBIGNIEW KORCZEWSKI (HUTECH) Technology Gdansk University of Technology Ho Chi Minh Trondheim Gdansk Vietnam Norway Poland Prof. TADEUSZ SZELANGIEWICZ Prof. MASSIMO FIGARI Prof. JOZEF LISOWSKI Maritime University of Szczecin University of Genova Gdynia Maritime University Szczecin Genova Gdynia Poland Italy Poland Prof. DRACOS VASSALOS Prof. HASSAN GHASSEMI Prof. JERZY EDWARD MATUSIAK University of Strathclyde Amirkabir University of Technology Aalto University Glasgow Tehran Espoo United Kingdom Iran Finland POLISH MARITIME RESEARCH 1 (109) 2021 Vol. 28; pp. 4-15 10.2478/pomr-2021-0001 A COMBINED METHOD TO PREDICT IMPACT PRESSURE ON PLANING CRAFT Hossein Tahmasvand Amirkabir University of Technology, Iran Hamid Zeraatgar* Amirkabir University of Technology, Iran * Corresponding author: hamidz@aut.ac.ir (H. Zeraatgar) ABSTRACT Prediction of the pressure distribution on a planing craft in waves deeply affects its structural design and safe operation. In this paper, the possibility of pressure prediction for the planing craft in waves is studied. A combined method is formulated by which craft motions in waves are computed using a 2.5D method, and the impact pressure is anticipated by the equivalent wedge method. Experiments are conducted to record the vertical acceleration and pressure time trends on a model. Comparing the results of the combined method with the experiments indicates that this approach successfully predicts the heave and pitch motions and the time evolution of the acceleration and pressure. The method presents good estimations for the peaks of the acceleration and pressure. Using the combined method, a parametric study on maximum peak acceleration and pressure is also conducted for various forward velocities and wave heights. It has been shown that the combined method is a fast and reliable tool for maximum peak pressure prediction. The method may be employed for structural design and optimization. Keywords: impact pressure; acceleration; 2.5D method; equivalent wedge method; planing craft. INTRODUCTION have been employed to analyse the dynamics of planing craft in waves. Fridsma [1] experimentally examined the motions of Accurate prediction of the pressure distribution on different prismatic planing models in regular waves. Savitsky a planing craft plays a major role in the design of a safe et al. [2] presented relations for added resistance, vertical structure. Both instantaneous impact pressure and mean acceleration, and buoyancy force in the wave, using the results force are important for a structure exposed to the impact of Fridsma [1]. Martin [3] introduced a linear model for the of water. A very sharp peak of short duration is the most dynamics of planing craft in the frequency domain. The linear important feature of the impact pressure and acceleration. model presented by Martin was the first model utilised for The impact totally disappears in heave and pitch motions. the dynamics of planing craft. Zarnick [4], based on Martin’s Therefore, when a method correctly predicts the motions, it model, developed a nonlinear mathematical model for the does not guarantee that the pressure distribution, especially planar motion of planing craft in the time domain. Many the peak pressure, has been evaluated properly. researchers, including Hicks et al. [5], Akers [6], Van Deyzen Various methods such as experimental, semi-empirical, [7], Sayeed [8], Ruscelli [9], and Pennino [10], have attempted numerical and computational fluid dynamics (CFD) methods to improve the Zarnick model. 4 POLISH MARITIME RESEARCH, No 1/2021 Based on the reviewed literature, the 2.5D method mean a good estimation of the pressure distribution on the (developed by Zarnick [4]) is a fast and reliable means for structure. On the other hand, the equivalent wedge method the prediction of the heave and pitch motions and the vertical is a robust method to estimate the pressure distribution, acceleration of planing craft in waves [7]. The 2.5D method if motion as input is appropriately
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