This is a Joint Industry Project (JIP) with the Naval Civil Engineering Laboratory. The purpose of this project is to isolate some of the uncertainties in the force coefficients, D and C used in the Morrison (MOJS) equation and to extend the data from an oscillating water tunnel to a harmonic free-surface wave. The logical first extension would be a large unidirectional wave in a wave flume. The test cylinder used will be capable of measuring both local pressure forces and total forces and moments on the cylinder. The data will be analyzed to determine the force coefficients for the two-term and the Sarpkaya multiple-term MOJS equation with both measured and stream function wave theory kinematics.
Complete. Wave tank tests were conducted and the data was analyzed. From this tank data, it was found that maximum wave forces were more inertia dominant than would have been predicted by available theories prior to the testing. The project was extended to review some of this evidence and introduce a new direction for analysis.