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Study on Coning Motion Test for Submerged Body
Study on Coning Motion Test for Submerged Body
Journal of Ocean Engineering and Technology. 2015. Dec, 29(6): 436-444
  • Published : December 31, 2015
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Park Jong-Yong
Kim Nakwan
Rhee Key-Pyo
Yoon Hyeon Kyu
Kim Chanki
Jung Chulmin
Ahn Kyoungsoo
Lee Sungkyun

Abstract
A submerged body is sensitive to changes in the roll moment because of the small restoring moment and moment of inertia. Thus, a method for predicting the roll-related hydrodynamic coefficients is important. This paper describes a deduction method for the hydrodynamic coefficients based on the results of a coning motion test. A resistance test, static drift test, and coning motion test were performed to obtain the coefficients in the towing tank of Seoul National University. The sum of the hydrodynamic force, inertial force, gravity, and buoyancy was measured in the coning motion test. The hydrodynamic force was deduced by subtracting the inertial force, gravity, and buoyancy from the measured force. The hydrodynamic coefficients were deduced using the regression method.
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