Ice Mass Motions Near an Offshore Structure

Author:

Isaacson M.1

Affiliation:

1. University of British Columbia, Vancouver, B.C., Canada

Abstract

The present paper treats the motions of an ice mass up to the instant of impact with a large fixed offshore structure, and describes a numerical method for predicting these motions taking account of the interaction between the ice mass and structure. In general an ice mass will undergo wave-induced oscillatory motions as well as drift motion. The former are calculated by linear diffraction theory applied to bodies of arbitrary shape so that interaction effects are fully accounted for. The drift motion is calculated by a time-stepping procedure applied to the drift equations of motion which involve zero frequency added masses, drag forces and wave drift forces. As an example of the methods application, results are presented for a typical design situation which illustrate the nature of the hydrodynamic interaction between the ice mass and structure.

Publisher

ASME International

Subject

Mechanical Engineering,Ocean Engineering

Cited by 7 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Fluid Effects During Iceberg-Structure Interactions;Encyclopedia of Ocean Engineering;2022

2. Fluid Effects During Iceberg-Structure Interactions;Encyclopedia of Ocean Engineering;2019-12-14

3. Combined wave – iceberg loading on offshore structures;Canadian Journal of Civil Engineering;1996-10-01

4. Wave-induced iceberg motion;Cold Regions Science and Technology;1991-11

5. Modelling of iceberg drift motions near a large offshore structure;Cold Regions Science and Technology;1990-12

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