Skip Navigation Minerals Management Service Minerals Management Service MMS Home pagesSearchMMS Topic IndexAbout MMSWhat’s NewTechnology Assessment & Research -- Offshore Minerals Management United States Department of the Interior
TA&R Home PageTA&R International Home PagesTA&R Oil Spill Research HomeTA&R Research Projects HomeTA&R Workshops HomeTA&R Safety Home
Project Number 186
Date of Summary March 31, 1995
Subject Hydrodynamic Damping and Combined Motion Loading (HYDAMP II)
Performing Activity University of Mississippi
Principal Investigator Dr. Thomas E. Horton
Contracting Agency Minerals Management Service
Estimated Completion Completed
Description 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

Progress Completed. A proposed continuation of the project will not be funded.

Reports
AA (copyrighted material) Horton, T. E., Feifarek, M. J. and H. Golestanian, Wave Force Coefficient Correlation Based on Wake Volume Scaling, in Journal of Offshore Mechanics and Arctic Engineering, Vol. 116, pp. 97-101, May 1994.
AB  File in Adobe's Portable Document Format (PDF). (8308 KB; 198 pages) Horton, T. E., HYDAMP II: A Joint Industry Program on Hydrodynamic Damping and Combined Motion, Final technical report submitted by T. E. Horton, February 1995.

 

Privacy | Disclaimers | Accessibility | Topic Index | FOIA

Last Updated: 10/24/2007, 12:01 PM

PDF.