A Novel Method to Determine the Hydrodynamic Coefficients of an Eyeball ROV

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  2. Dr Michael Lau
  3. Dr Cheng Chin
Author(s)Eng YH, Lau MS, Low E, Seet GL, Chin CS
Publication type Conference Proceedings (inc. Abstract)
Conference NameIaeng Transactions on Engineering Technologies Volume I: Special Edition of the International MultiConference of Engineers and Computer Scientists
Conference LocationHong Kong
Year of Conference2009
Date19–21 March 2008
Series TitleAIP Conference Proceedings
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A good dynamics model is essential and critical for the successful design of navigation and control system of an underwater vehicle. However, it is difficult to determine from the hydrodynamic forces, the inertial added mass terms and the drag coefficients. In this paper, a new experimental method has been used to find the hydrodynamic forces for the ROV II, a remotely operated underwater vehicle. The proposed method is based on the classical free decay test, but with the spring oscillation replaced by a pendulum motion. The experiment results determined from the free decay test of a scaled model compared well with the simulation results obtained from well-established computational fluid dynamics (CFD) program. Thus, the proposed approach can be used to find the added mass and drag coefficients for other underwater vehicles.
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