A Theoretical Analysis of a Self-Propelled Backward-Bent Duct Wave Energy Conversion System

[+] Author and Article Information
M. E. McCormick

U.S. Naval Academy, Annapolis, MD 21401; The Johns Hopkins University, Baltimore, MD 21218

J. Energy Resour. Technol 113(2), 94-100 (Jun 01, 1991) (7 pages) doi:10.1115/1.2905793 History: Received March 13, 1990; Revised April 11, 1991; Online April 16, 2008


An analysis of a self-propelled Backward-Bent Duct Barge (BBDB) wave energy conversion system operating at an averaged forward speed is presented. The energy required to propel the system is a parasitic energy of the wave energy conversion subsystem. The analysis includes a feedback between the internal water motions and the floating body dynamics. The performance of the BBDB operating in a design (head) sea is shown to be far superior to both a BBDB in a following sea and a fixed BBDB in a following sea. For this comparison, a 35.6-m long system having a 9.91-m beam and displacing 500 metric tons is studied. The system is also shown to have a positive drift in head seas.

Copyright © 1991 by The American Society of Mechanical Engineers
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