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Study on Coning Motion Test for Submerged Body

몰수체의 원추형시험에 관한 연구

  • Received : 2015.10.05
  • Accepted : 2015.12.17
  • Published : 2015.12.31

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.

Keywords

Submerged body;Coning motion test;Hydrodynamic coefficient;6-DOF equation of motion;Regression analysis

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