This study was a Joint Industry Project (JIP) and is an adjunct investigation to Project No. 147. The objective was to examine the important combined motion and damping problems involved in the hydrodynamic analysis of deep-water risers and compliant structures. The specific aims were:
(1) to improve present practice through the use of an alternative to the Morison equation called the Inertial Pressure Method (IPM); and
(2) to explore improvements to the Morison methodology by analyzing the IPM damping force time series for each test.
The time series data was partitioned into low frequency patterns, indicative of patterns previously observed with simple periodic motion and the IPM, and high frequency time series indicative of the damping forces. During the performance period, the contractor explored improvements of the Morison methodology which are indicated by these damping force coefficient
Completed. A proposed continuation of the project will not be funded.