Dynamic analysis for the design of C.A.L.M. system in shallow and deep waters

Conference · Mon Dec 30 23:00:00 EST 1996

OSTI ID:449735

Hwang, Y L ^[1]

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1. IMODCO, Inc., Calabasas Hills, CA (United States)

This paper presents a time domain analysis approach to evaluate the dynamic behavior of the Catenary Anchor Leg Mooring (CALM) system under the maximum operational condition when a tanker is moored to the terminal, and in the survival condition when the terminal is not occupied by a tanker. An analytical model, integrating tanker, hawser, buoy, and mooring lines is developed to dynamically predict the extreme mooring loads and buoy orbital motions, when responding to the effect of wind, current, wave frequency and wave drift response. Numerical results describing the dynamic behaviors of the CALM system in both shallow and deep water situations are presented and discussed. The importance of the line dynamics and hawser coupled buoy-tanker dynamics is demonstrated by comparing the present dynamic analysis with catenary calculation approach. Results of the analysis are compared with model test data to validate the mathematical model presented.

• OSTI ID: 449735
• Report Number(s): CONF-9606279--; ISBN 0-7918-1490-4
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CALCULATION METHODS
DEPTH
DESIGN
MATHEMATICAL MODELS
MOORINGS
RESPONSE FUNCTIONS
STRESS ANALYSIS
TANKER SHIPS