Underwater Hydrodynamics of Dolphin Craft

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Namdar, Hamid | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40628 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Sayadi, Hassan; Malaek, Mohammad Bagher
Abstract:
This dissertation accounts hydrodynamic coefficients for the hull form of Dolphine Craft using an Experimental-Numerical method. First, a short preface is mentionded about Dolphine craft and its charcterstics. Then, different methods for determining the hydrodynamic coeeficient are reviewed and the method used in this dissertation is introduced. After that, the selected methods will numerically be modeled. For accurate modeling, virtual labarotory is organizing for performing these tests During modeling, six degree freedom equation including the kinematic and Dynamics of body element are extractred and consequently, they are expressed for the rigid body and control volume of fluid. The writing method of these equations is so that can be used for programming and computational-fluid-dynamic softwares. Using the resulted equations and also the programming software, the modeling circumstance is investigated for determining the hydrodynamic coefficient of Dolphine craft in the status of underwater and infinite depth fluid. Finally, Static and Dynamic stability of craft is investigated
Keywords:
Hydrodynamic Coefficients ; Motion Simulation ; Stability ; Computational Fluid Dynamics (CFD) ; Six Degree of Freedom Robot ; Dolphine Craft

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