Effect of Iceberg Shape on Wind-force Parameters

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.jc850

K. Kornishin, Yaroslav Efimov, D. V. Nikushchenko, Dmitriy S Khmara, N. Tryaskin, A. Andreev, A. A. Skutin, K. Smirnov

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引用次数: 1

Abstract

This article examines iceberg movement under the influence of wind-force, with detailed analysis of the influence of iceberg shape (both keel and sail) on the parameters of this movement. For four icebergs, studied during trials in 2016– 2017, hydrodynamic characteristics of keels and sails were determined by means of numerical and basin modeling. For these icebergs, orientation, direction, and speed of movement were calculated for different wind speeds and directions. Regression between the maximum value of the hydrodynamic drag coefficient and the geometric parameters is built based on the studied shape of sails of 10 icebergs. A formula for calculating the wind load on an iceberg depending on the parameters of its topside and a formula for calculating the drift speed of icebergs less than 75 meters long are proposed. The formulas are applied to icebergs of the southwestern part of the Kara Sea, which made it possible to estimate their drift speed and wind load under the influence of wind. The obtained results can be used in the modeling of the iceberg drift, as well as for assessing the wind impact during iceberg towing.

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冰山形状对风力参数的影响

本文考察了在风力作用下的冰山运动，并详细分析了冰山形状(龙骨和船帆)对这一运动参数的影响。在2016 - 2017年的试验中，对四个冰山进行了研究，通过数值模拟和盆地模拟确定了龙骨和船帆的水动力特性。对于这些冰山，根据不同的风速和方向计算了它们的方位、方向和移动速度。通过对10座冰山风帆形状的研究，建立了水动力阻力系数最大值与几何参数之间的回归关系。提出了根据冰山顶面参数计算冰山风荷载的公式和长度小于75米的冰山漂移速度的计算公式。将公式应用于喀拉海西南部的冰山，使其在风作用下的漂移速度和风荷载的估算成为可能。所得结果可用于冰山漂移的建模，以及冰山拖曳过程中风的影响评估。

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.