MORISON EQUATION COEFFICIENTS AND DATA CONDITION

R.T. Hudspeth

Abstract


Identification of the Morison equation force coefficients Cm & C<j depends on the condition of the wave force/ kinematic data. For simple harmonic kinematics, the data are equally conditioned for identifyinq Cm & C<j at the critical value of the period parameter (K = UmT/D) defined by Keuleqan and Carpenter (1958). Critical values for K are = 11.4 from geometric interpretations and = 13.16 from numerical interpretations. Stable transverse lift forces may also be shown to correlate with the critical values of K from the physical interpretation of the period parameter qiven by Keulegan and Carpenter (1958). Data from three different types of physical experiments are used to demonstrate the importance of the condition of the data.

Keywords


data condition; Morison Equation; Morison coefficients

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