An experimental study on water entry of asymmetric wedges |
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| Institution: | 1. Australian Maritime College, University of Tasmania, TAS 7248, Australia;2. Arab Academy for Science, Technology and Maritime Transport, Alexandria 1029, Egypt;3. University College London, London WC1E 7JE, UK;4. Centre for Advanced Composite Materials, University of Auckland, Auckland 1023, New Zealand;1. DEIM - School of Engineering, University of Tuscia, 01100 Viterbo, Italy;2. Department of Mechanical and Aerospace Engineering, New York University Tandon School of Engineering, Brooklyn, NY 11201, USA;1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, PR China;2. Department of Mechanical Engineering, University College London, London WC1E 7JE, UK;1. Università Niccolò Cusano, Via Don Carlo Gnocchi 3, 00166, Rome, Italy;2. Department of Mechanical and Aerospace Engineering, New York University Polytechnic School of Engineering, 6 MetroTech Center, Brooklyn, NY 11201, USA;1. Department of Marine Engineering Operations, Yildiz Technical University, Istanbul 34349, Turkey;2. Department of Naval Architecture and Marine Engineering, Yildiz Technical University, Istanbul 34349, Turkey |
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| Abstract: | The aim of the paper is to provide an experimental reference for investigation of asymmetric water entry of wedges. Parameters of the study include initial deadrise angle, inclination angle and impact speed. Initial deadrise angles of the wedges were 20° and 30° with inclination angles ranging from 0° to 15° in 5° increments. Wedges were freely fallen from three different heights. Time histories of impact pressure and body acceleration were recorded. Sampling rate of measurements were set to 25 KHz. Main configuration of each test including mass of the wedge and water level were kept unchanged during all experiments. Additionally, several calibration tests were conducted to assess the repeatability and accuracy of the recorded data. The experimental results are compared with different entry theories and other available experiments. The comparison shows a reasonable agreement and indicates that the inclination angle can dramatically affect the impact pressure experienced by the wedges. Finally, the results show that the traditional asymmetric theories are not appropriate for all inclination angles. |
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| Keywords: | Asymmetric water entry Asymmetric impact Free falling Wedge Inclination angle |
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