Mooring Model Coefficients for Barge Tows in a Navigation Lock
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 129, Issue 5
Abstract
The equations of motion of a spring-mass system are used to describe a vessel’s mooring system. These equations employ added mass and hydrodynamic damping coefficients, which depend on vessel shape and the proximity of free-surface and solid boundaries. The present study has experimentally determined these coefficients for barge tows moored in the chamber of navigation locks. Seven lock chamber configurations were tested in which the width, depth, and length of the chamber and the beam width and length of the tow were varied. Values of the added mass coefficient and a nondimensional form of the damping coefficient are presented. Subsequent to modeling flow in a lock chamber, these coefficients can be used in conjunction with hawser properties (spring constants) to estimate hawser forces generated during locking operations.
Get full access to this article
View all available purchase options and get full access to this article.
References
Kalkwijk, J. P. T. (1973). “Hydrodynamic forces and ship motions induced by surges in a navigation lock.” Rep. No. 73-1, Dept. of Civil Engineering, Delft Univ. of Technology, Delft, The Netherlands.
Natale, L., and Savi, F. (1994). “Dynamics of barges in navigation locks.” Proc., IASTED Int. Conf. on Modelling and Simulation, M. H. Hamza, ed., International Association of Science and Technology for Development, Anaheim, Calif., 237–240.
Natale, L., and Savi, F.(2000). “Minimization of filling and emptying time for navigation locks.” J. Waterw., Port, Coastal, Ocean Eng., 126(6), 274–280.
Naval Facilities Engineering Command. (1986a). “Fixed moorings.” Design Manual 26.4, Alexandria, Va.
Naval Facilities Engineering Command. (1986b). “Mooring design, physical and empirical data.” Design Manual 26.6, Alexandria, Va.
O’Brien, J. T. (1954). “Forces on moored ships due to wave action.” Proc., 1st Conf. on Ships and Waves, J. W. Johnson, ed., Council on Wave Research and Society of Naval Architects and Marine Engineers, Hoboken, N.J.
Permanent International Association of Navigation Congresses (PIANC). (1995). “Criteria for movements of moored ships in harbours, a practical guide.” Rep. of Working Group No. 24, Supplement to Bulletin No. 88, Brussels, Belgium.
Schohl, G. A. (1999). “User’s manual for LOCKSIM: Hydraulic simulation of navigation lock filling and emptying systems.” Contract Rep. CHL-99-1, U.S. Army Engineers Waterways Experiment Station, Vicksburg, Miss.
Society of Naval Architects and Marine Engineers. (1983). Principles of naval architecture, J. P. Comstock, ed., Revised Ed., New York.
Steidel, R. F., Jr. (1989). An introduction to mechanical vibrations, Wiley, New York.
Information & Authors
Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 129 • Issue 5 • September 2003
Pages: 233 - 236
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Oct 11, 2002
Accepted: Feb 25, 2003
Published online: Aug 15, 2003
Published in print: Sep 2003
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.