International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
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An experimental study on the stern bottom pressure distribution of a high-speed planing vessel with and without interceptors

  • Seok, Woochan (Research Institute of Marine Systems Engineering, Seoul National University) ;
  • Park, Sae Yong (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Rhee, Shin Hyung (Research Institute of Marine Systems Engineering, Seoul National University)
  • Received : 2020.04.15
  • Accepted : 2020.08.04
  • Published : 2020.12.31
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Abstract

In this study, the effects of hydrodynamic interceptors on a high-speed vessel were investigated to identify the operating principle based on experiments. Model tests were performed using a high-speed towing carriage. The resistance, trim and rise of Center of Gravity (CG) of the high-speed vessel were measured for various ship speeds and interceptor heights. As the interceptor height increased, the trim and rise of CG were reduced. In order to quantitatively analyze these phenomena, the pressure at the stern bottom was measured using tactile sensors. The reliability of the measured results from the tactile sensors was verified through repeat tests. The pressure on the stern bottom increased in proportion to the interceptor height, as the interceptor partially blocked the flow there. Then, the trim was reduced. However, as the ship speed increases, the pressure at the location close to the interceptor decreases when the interceptor height is small, leading to increased trim. Therefore, the interceptor height for running attitude control should be carefully determined considering multiple factors in the operating condition of the high-speed planing hull.

Keywords

Acknowledgement

This research was supported by U.S. Office of Naval Research (ONR) and ONR Global as part of the Naval International Cooperative Opportunities in Science and Technology Program (NICOP, Grant No. 62090-16-1-2188) under the supervisions of Drs. Woei-Min Lin and Sung-Eun Kim, the National Research Foundation of Korea (NRF-2017K1A3A1A19071629, NRF-2020R1I1A2074369) and the Institute of Engineering Research at Seoul National University.

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