Features of Tabular Iceberg Towing

IF 0.9 4区工程技术 Q4 ENGINEERING, CIVIL

International Journal of Offshore and Polar Engineering Pub Date : 2022-06-01 DOI:10.17736/ijope.2022.ik09

N. Tryaskin, E. Ermolaeva, K. D. Ovchinnikov, D. V. Nikushchenko, Dmitriy S Khmara, K. Kornishin, Yaroslav Efimov, A. V. Nesterov, A. A. Skutin

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引用次数: 1

Abstract

Some features of the movement of tabular icebergs during their towing are examined. A tabular iceberg towed in the Barents Sea in 2017, for which surveys of the underwater and surface parts were carried out, was selected for the analysis. As a result of numerical and physical modeling, the hydrodynamic characteristics of the iceberg were obtained for different motion courses; good convergence of the results of these methods was achieved. To determine each component, the numerical simulation, based on the equations of a viscous ﬂuid motion, was carried out. Turbulent ﬂuid ﬂow is described by the Reynolds-averaged Navier–Stokes and continuity equations. The k – (cid:151) SST turbulence model is used to simulate turbulence. Numerical differentiation of the equations was performed in the open-source computational ﬂuid dynamics software Open-FOAM. It is shown that the iceberg has several positions of stable and unstable equilibria in terms of the rotation around a vertical axis, and the inﬂuence of an iceberg’s orientation on additional resistance during rough seas is considered. Obtained results may be used in planning tabular iceberg towing in different regions of the world, as well as in further studies of iceberg behavior under load.

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表格冰山拖曳的特点

考察了板状冰山在拖曳过程中的一些运动特征。2017年在巴伦支海拖曳的一座板状冰山被选中进行分析，该冰山对水下和水面部分进行了调查。通过数值模拟和物理模拟，得到了冰山在不同运动过程中的水动力特性；这些方法的结果具有良好的收敛性。为了确定每个分量，基于粘性流体运动方程进行了数值模拟。湍流流动由雷诺平均Navier-Stokes方程和连续性方程描述。k–（cid:151）SST湍流模型用于模拟湍流。方程的数值微分是在开源计算流体动力学软件open FOAM中进行的。研究表明，就围绕垂直轴的旋转而言，冰山有几个稳定和不稳定平衡的位置，并考虑了在波涛汹涌的海面上冰山的方向对额外阻力的影响。所获得的结果可用于规划世界不同地区的表格冰山拖曳，以及进一步研究负载下的冰山行为。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Offshore and Polar Engineering ENGINEERING, CIVIL-ENGINEERING, OCEAN

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The primary aim of the IJOPE is to serve engineers and researchers worldwide by disseminating technical information of permanent interest in the fields of offshore, ocean, polar energy/resources and materials engineering. The IJOPE is the principal periodical of The International Society of Offshore and Polar Engineers (ISOPE), which is very active in the dissemination of technical information and organization of symposia and conferences in these fields throughout the world. Theoretical, experimental and engineering research papers are welcome. Brief reports of research results or outstanding engineering achievements of likely interest to readers will be published in the Technical Notes format.