Stochastic Response of Tension Leg Platform to Wave and Current Forces

[+] Author and Article Information
A. Ertas, J.-H. Lee

Mechanical Engineering Department, Texas Tech University, Lubbock, TX 79409

J. Energy Resour. Technol 111(4), 221-230 (Dec 01, 1989) (10 pages) doi:10.1115/1.3231428 History: Received April 01, 1988; Revised June 26, 1989; Online October 22, 2009


The linear analysis in the frequency domain is presented for the surge motion of a tension leg platform (TLP) in the case of random waves only and random waves with constant current. A single-degree-of-freedom model of a TLP is employed for response. The superposition method, one of the simulation techniques, is applied to random sea wave, and the response analysis of TLP in time is developed with wave velocity and wave acceleration simulations. Wave-induced forces are calculated using the modified Morison equation, which takes into account relative motion. Computational methods for both analyses are developed, and the results of stochastic, dynamic response of the TLP, with and without the presence of current, are presented and compared.

Copyright © 1989 by ASME
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