Large eddy simulation and laboratory experiments of ice melting in steady currents and surface waves

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2025-09-26 DOI:10.1016/j.coldregions.2025.104705

Chia-Ren Chu , Cheng-Han Yu , Fang-Yu Fan , Hwa Chien , Tso-Ren Wu

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引用次数: 0

Abstract

It is well-known that global warming has accelerated ice melting in the Arctic and Antarctic regions, contributing to the rise of sea level. This study employs laboratory experiments to investigate the melting process of a rectangular ice floe in current flows and periodic waves. In addition, a Large Eddy Simulation (LES) model combined with the enthalpy method is used to compute the melt rates of an isolated ice floe in steady currents over a wide range of velocities (0.02–0.30 m/s). The simulation results are validated against laboratory data. Experimental findings indicate that melt rates in current flows are proportional to the flow velocity but are lower than those observed in periodic waves. The front melt rate of the ice floe is greater than the thickness and rear melt rates under the same velocity. The unstably stratified flow in the wake region of the ice floe enhances the turbulent mixing between the meltwater and ambient water, dissipating the temperature stratification at a distance of about three times the floe's length. Furthermore, the mass change rate and basal melt rate of ice floe can be predicted using a bulk parameterization model for a wide range of current velocities.

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稳定流和表面波中冰融化的大涡模拟和室内实验

众所周知，全球变暖加速了北极和南极地区的冰融化，导致海平面上升。本文采用室内实验的方法，研究了矩形浮冰在水流和周期波作用下的融化过程。此外，采用大涡模拟（LES）模型结合焓法计算了稳定流在大范围速度（0.02 ~ 0.30 m/s）下孤立浮冰的融化速率。仿真结果与实验数据进行了对比验证。实验结果表明，电流流中的熔体速率与流速成正比，但低于周期波中的熔体速率。在相同速度下，浮冰的前部融化速率大于厚度和后部融化速率。浮冰尾迹区的不稳定分层流动增强了融水与周围水之间的湍流混合，在大约三倍浮冰长度的距离上消散了温度分层。此外，在较宽的流速范围内，利用体积参数化模型可以预测浮冰的质量变化率和基本融化速率。

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

Cold Regions Science and Technology 工程技术-地球科学综合

CiteScore

7.40

自引率

12.20%

发文量

209

审稿时长

4.9 months

期刊介绍： Cold Regions Science and Technology is an international journal dealing with the science and technical problems of cold environments in both the polar regions and more temperate locations. It includes fundamental aspects of cryospheric sciences which have applications for cold regions problems as well as engineering topics which relate to the cryosphere. Emphasis is given to applied science with broad coverage of the physical and mechanical aspects of ice (including glaciers and sea ice), snow and snow avalanches, ice-water systems, ice-bonded soils and permafrost. Relevant aspects of Earth science, materials science, offshore and river ice engineering are also of primary interest. These include icing of ships and structures as well as trafficability in cold environments. Technological advances for cold regions in research, development, and engineering practice are relevant to the journal. Theoretical papers must include a detailed discussion of the potential application of the theory to address cold regions problems. The journal serves a wide range of specialists, providing a medium for interdisciplinary communication and a convenient source of reference.