Analysis of Moorings for Subsurface Buoy System

Author

Sundaravadivelu, R. ; Prasad, K. S S R Ch Vara ; Gopu, P.R.

Author_Institution

Indian Institute of Technology, Madras, India

fYear

1987

fDate

Sept. 28 1987-Oct. 1 1987

Firstpage

244

Lastpage

247

Abstract

The analysis of moorings for subsurface buoy system is complex because of large changes in configuration, load dependence on the position, shape and orientation of the system, nonlinear load behaviour of cable, mooring boundary etc. This paper presents the details of the parametric study carried out on mooring using an indigenously developed finite element program \´MOOR\´. Incremental method and Newton Raphson iterative schemes were used to develop the program. The effect of various parameters such as current velocity (v), water depth (H), net buoyancy (pretension) of the buoy (T), specific weight of fluid ( $\\gamma$ ) on horizontal deflection ( $\\Delta$ ) are studied. Dimensional analysis using Buckingham Pi method gives $\\Delta /H, T/\\gamma H^{3}, \\mu v/\\gamma H^{2}$ as nondimensional variables. Using the above nondimensional terms, design charts have been prepared. The above charts can be used for analysis and design of moorings for subsurface buoy system. The influence of different parameters on the design is also discussed.

Keywords

Cables; Drag; Fluid dynamics; Geometry; Gravity; Linear matrix inequalities; Nonlinear dynamical systems; Parametric study; Performance analysis; Sea surface;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS '87

Conference_Location

Halifax, NS, Canada

Type

conf

DOI

10.1109/OCEANS.1987.1160873

Filename

1160873