2DOF numerical investigation of a planing vessel in head sea waves in deep and shallow water conditions |
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| Affiliation: | 1. State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai, China;2. Shanghai Key Laboratory of Ship Engineering, Marine Design and Research Institute of China, Shanghai, China;1. State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China;2. School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China;3. Hubei Provincial Engineering Technology Research Center for Magnetic Suspension, Wuhan University of Technology, Wuhan 430070, China;4. Institute of Advanced Materials and Manufacturing Technology, Wuhan University of Technology, Wuhan 430070, China;1. School of Civil and Environmental Engineering, Cornell University, 220 Hollister Hall, Ithaca, NY 14853, United States;2. Center for Applied Mathematics, Cornell University, 657 Frank H.T. Rhodes Hall, Ithaca, NY 14853, United States;3. Asian School of the Environment, Nanyang Technological University, 62 Nanyang Dr, Singapore, 637459, Singapore;1. Department of Maritime Engineering, Amirkabir University of Technology, Tehran, Iran;2. Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran;3. Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran;4. Faculty of Engineering, Persian Gulf University, Bushehr, Iran |
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| Abstract: | Analysis of a craft with two degrees of freedom (2DOF) consumes time more than simulation of a craft with a fixed trim condition; therefore in most of the previous researches fixed trim condition is taken into account to analyze the flow field around a craft in shallow water and head sea wave conditions. In this paper numerical simulation of Reynolds Average Naiver Stokes (RANS) equations are used to analyze the motion of DTMB 62 model 4667-1 planing vessel in calm water and head sea waves in both deep and shallow water with two degrees of freedom (heave and pitch). For this purpose, a finite volume ANSYS-FLUENT code is used to solve the Navier-Stokes equations for the simulation of the flow field around the vessel. In addition, an explicit VOF scheme and SST k-ω model is used with dynamic mesh scheme to capture the interface of a two-phase flow and to model the turbulence respectively in the 2DOF model.Regarding the results, reducing the wavelength and also the depth of the water can increase the drag force. Also comparing the results of a fixed trim vessel with the results of a free to sink and trim one in calm water shows a difference of approximately 50% in the drag force in shallow water. |
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| Keywords: | Planing vessel 2DOF Head sea waves Calm water Shallow water |
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