Cold Regions Science and Technology最新文献_第2页

Movement characteristics of rock-ice avalanches: Insights from flume tests 岩冰雪崩的运动特征：水槽试验的启示

IF 3.8 2区工程技术

Cold Regions Science and Technology Pub Date : 2025-05-02 DOI: 10.1016/j.coldregions.2025.104538

Zhiyu Zhang , Darui Liu , Gang Fan , Congjiang Li , Yuxiang Hu , Jiawen Zhou

{"title":"Movement characteristics of rock-ice avalanches: Insights from flume tests","authors":"Zhiyu Zhang , Darui Liu , Gang Fan , Congjiang Li , Yuxiang Hu , Jiawen Zhou","doi":"10.1016/j.coldregions.2025.104538","DOIUrl":"10.1016/j.coldregions.2025.104538","url":null,"abstract":"<div><div>Rock-ice avalanches, changing temperature, ice melting, entrainment and flow transformation, often lead to secondary disasters, such as landslide dams, in cold mountainous regions. The low friction, flow transformation, and freezing effects of ice debris affect the mobility of rock-ice avalanches. This study employed large-scale flume tests. The results demonstrate a distinct anti-grain order accumulation phenomenon during the deposition of rock avalanches, characterized by larger particles accumulating at the top and finer particles settling at the bottom. Furthermore, the surface of the landslide dam formed by the rock avalanche is entirely composed of ice debris, which depends on the physical properties of the composite. As the ice content in the rock-ice avalanches increases from 0 % to 50 %, both the normal stress and shear stress on the sliding surface exhibit a continuous increase, thereby enhancing their scraping capability. In addition, the friction coefficient of rock-ice avalanches decreases with increasing ice content, where the effectively reduced frictional force during erosion equates to momentum generation. Consequently, more material flows into the riverbed and form a landslide dam. The freezing effect of ice debris effectively reduces particle collisions inside rock-ice avalanches, decreasing energy dissipation and thereby enhancing its mobility. This study provides fundamental insights into the mobility of rock-ice avalanches by investigating the effects of ice content and spatial distribution of rock-ice materials on various physical properties.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"237 ","pages":"Article 104538"},"PeriodicalIF":3.8,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A predictive model for ice lens width considering freezing rate in artificial ground freezing for tunnel construction 隧道人工冻结中考虑冻结速率的冰透镜宽度预测模型

IF 3.8 2区工程技术

Cold Regions Science and Technology Pub Date : 2025-05-02 DOI: 10.1016/j.coldregions.2025.104532

Zhen Wang , Zhen-de Zhu , Shu Zhu , Ming Wu

{"title":"A predictive model for ice lens width considering freezing rate in artificial ground freezing for tunnel construction","authors":"Zhen Wang , Zhen-de Zhu , Shu Zhu , Ming Wu","doi":"10.1016/j.coldregions.2025.104532","DOIUrl":"10.1016/j.coldregions.2025.104532","url":null,"abstract":"<div><div>In artificial ground freezing (AGF) for tunnel construction, adjusting the freezing patterns can significantly mitigate frost heave and thawing settlements. However, current research on open freezing has not thoroughly explored how different freezing patterns affect frost. This gap in knowledge makes it difficult to provide clear guidance for adjusting freezing patterns in AGF engineering. To address this issue, this paper proposes a predictive model for ice lens width, which can serve as a valuable reference for real-time adjustments of freezing patterns. The model is based on experimental investigations into the freezing rate at the cold side of open freezing under different patterns. Experiment results reveal a correlation between the movement velocity of the freezing front and the ice lens width: a higher velocity results in a narrower ice lens. Based on the second theory of frost heave, a theoretical model for predicting ice lens width under varying freezing rates has been developed, explaining the observed correlation. However, this theoretical model involves many parameters that are difficult to obtain in practical engineering. For the convenience of engineering applications, a simplified model based on the theoretical model was proposed. Validation of this simplified model shows that it has good predictive performance. When combined with a custom temperature sensor, this simplified model offers a solution for real-time monitoring and continuous prediction of tunnel frost heave deformation in AGF engineering.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"237 ","pages":"Article 104532"},"PeriodicalIF":3.8,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental characterization and hysteresis modeling of unfrozen water in soil during freezing-thawing cycle 冻融循环过程中土壤中未冻水的实验表征及滞回模型

IF 3.8 2区工程技术

Cold Regions Science and Technology Pub Date : 2025-05-02 DOI: 10.1016/j.coldregions.2025.104537

Manqiu Zhong , Zhongqun Guo , Ruiqiang Bai , Mingyi Zhang , Xiao Jin , Zheng Wang

{"title":"Experimental characterization and hysteresis modeling of unfrozen water in soil during freezing-thawing cycle","authors":"Manqiu Zhong , Zhongqun Guo , Ruiqiang Bai , Mingyi Zhang , Xiao Jin , Zheng Wang","doi":"10.1016/j.coldregions.2025.104537","DOIUrl":"10.1016/j.coldregions.2025.104537","url":null,"abstract":"<div><div>The hysteresis effect of unfrozen water during freeze-thaw cycles greatly influences the hydrothermal properties of soil. To better understand the hysteresis behavior of unfrozen water in the soil, this study utilized frequency domain reflectometry to measure the unfrozen water content variations in silty clay under both stepwise and rapid temperature change modes. The hysteresis effect of unfrozen water in soil was analyzed, also the underlying mechanism was revealed. The results indicate that unfrozen water content variations are consistent across the two temperature change modes, with hysteresis observed in both scenarios. This effect was more noticeable during the rapid temperature change mode, and soil samples with higher initial moisture content froze earlier and thawed more slowly in this mode. The hysteresis phenomena are mainly influenced by the ice crystal metastable nucleation, the blockage effect of pore ice crystallization, and the pore water pressure changes during phase transition. The main cause of unfrozen water hysteresis in soil during the initial freezing phase is the metastable nucleation process. In the later stages of freezing, the hysteresis effect is primarily driven by changes in capillary water curvature, induced by the blockage effect of pore ice crystallization, and shifts in pore water pressure during the ice-water phase transition. Also, a hysteresis model was proposed and validated against experimental data and existing models, demonstrating good performance and accurately predicting unfrozen water content under varying temperature conditions. This research enhances the understanding of the mechanism responsible for the hysteresis effect of unfrozen water content in frozen soil.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"238 ","pages":"Article 104537"},"PeriodicalIF":3.8,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143936708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Micromechanics-based strength criterion for tailings silty clay considering the influence of freeze-thaw cycles 考虑冻融循环影响的尾矿粉质粘土细观力学强度准则

IF 3.8 2区工程技术

Cold Regions Science and Technology Pub Date : 2025-05-02 DOI: 10.1016/j.coldregions.2025.104536

Lu Sun , Enlong Liu , Fei Luo

{"title":"Micromechanics-based strength criterion for tailings silty clay considering the influence of freeze-thaw cycles","authors":"Lu Sun , Enlong Liu , Fei Luo","doi":"10.1016/j.coldregions.2025.104536","DOIUrl":"10.1016/j.coldregions.2025.104536","url":null,"abstract":"<div><div>Based on triaxial compression test results and scanning electron microscopy (SEM) analysis of tailings silty clay subjected to different freeze-thaw cycles, a new strength criterion is proposed that accounts for the influence of bonding structure, particle arrangement, and pore distribution. The changes in strength of tailings powdery clay under different freeze-thaw cycles (0, 1, 5, 10, and 15) were studied by examining the changes in microporous structure and strength curves obtained from triaxial tests. In formulating the strength criterion, tailings soil is modeled as a binary-material system consisting of bonding elements (matrix) and frictional elements (inclusion). The bonding elements are characterized by the Mohr-Coulomb strength criterion, while the frictional elements are described by the Drucker-Prager strength criterion. Microscopic strength data are derived from the material dissipation function. The differences between the dissipation function and elastic strain energy are used to reveal the material's nonlinear behavior. By incorporating freeze-thaw cycle parameters into the volume fraction of frictional elements, strain energy expressions are constructed using the homogenization method. This allows for the determination of the macroscopic dissipation function of the composite material, which leads to the derivation of a strength criterion for two-phase linear cemented- frictional composite materials under freeze-thaw cycle conditions. The effectiveness of the proposed criterion was validated using triaxial test data. The results demonstrate that the criterion accurately predicts the strength characteristics of tailings silty clay under freeze-thaw cycles. However, it should be noted that the proposed model has certain limitations. Its performance under extreme conditions requires further research.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"237 ","pages":"Article 104536"},"PeriodicalIF":3.8,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Subsea pipeline design against ice gouging: Influence of trenching techniques and trench geometry 防冰凿的海底管道设计：堑壕技术和堑壕几何形状的影响

IF 3.8 2区工程技术

Cold Regions Science and Technology Pub Date : 2025-04-29 DOI: 10.1016/j.coldregions.2025.104535

Alireza Ghorbanzadeh , Hodjat Shiri , Xiaoyu Dong

{"title":"Subsea pipeline design against ice gouging: Influence of trenching techniques and trench geometry","authors":"Alireza Ghorbanzadeh , Hodjat Shiri , Xiaoyu Dong","doi":"10.1016/j.coldregions.2025.104535","DOIUrl":"10.1016/j.coldregions.2025.104535","url":null,"abstract":"<div><div>Subsea pipelines in Arctic environments face the risk of damage from ice gouging, where drifting ice keels scour the seabed. To ensure pipeline integrity, burial using methods like ploughs, mechanical trenchers, jetting, or hydraulic dredging is the conventional protection method. Each method has capabilities and limitations, resulting in different trench profiles and backfill characteristics. This study investigates the influence of these trenching methods and their associated trench geometries on pipeline response and seabed failure mechanisms during ice gouging events. Using advanced large deformation finite element (LDFE) analyses with a Coupled Eulerian-Lagrangian (CEL) algorithm, the complex soil behavior, including strain-rate dependency and strain-softening effects, is modeled. The simulations explicitly incorporate the pipeline, enabling a detailed analysis of its behavior under ice gouging loads. The simulations analyze subgouge soil displacement, pipeline displacement, strains, and ovalization. The findings reveal a direct correlation between increasing trench wall angle and width and the intensification of the backfill removal mechanism. Trench geometry significantly influences the pipeline's horizontal and vertical displacement, while axial displacement and ovalization are less affected. This study emphasizes the crucial role of trenching technique selection and trench shape design in mitigating the risks of ice gouging, highlighting the value of numerical modeling in optimizing pipeline protection strategies in these challenging environments.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"237 ","pages":"Article 104535"},"PeriodicalIF":3.8,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating emerging boulder impacts on snowpack ablation 研究新出现的巨石对积雪消融的影响

IF 3.8 2区工程技术

Cold Regions Science and Technology Pub Date : 2025-04-28 DOI: 10.1016/j.coldregions.2025.104534

Eole Valence , Bastien Charonnat , Michel Baraër , Kaiyuan Wang , Jeffrey M. McKenzie

{"title":"Investigating emerging boulder impacts on snowpack ablation","authors":"Eole Valence , Bastien Charonnat , Michel Baraër , Kaiyuan Wang , Jeffrey M. McKenzie","doi":"10.1016/j.coldregions.2025.104534","DOIUrl":"10.1016/j.coldregions.2025.104534","url":null,"abstract":"<div><div>The impact of emergent boulders within a thinning and melting snowpack remains poorly understood. Our research examines how boulders, exposed by melting snowpack influence the spatial and temporal patterns of snow ablation in the Shár Shaw Tagà Valley, Yukon, Canada. A multimethod approach, combining thermal infrared time-lapse imaging, drone-based photogrammetry, and terrestrial laser scanning, was used to monitor snow surface temperature, elevation changes, and melt variability. This approach underscores the importance of comprehensive techniques in assessing the spatial and temporal variability of snow surface temperature and topography. Results indicate that boulders accelerate snowmelt in their vicinity during the ablation season, with snow surface thermal characteristics shaped by local terrain and meteorological conditions. The fastest rates of ablation occur during periods of mild weather with no precipitation. These findings highlight the role of boulders as micro-scale heat sources that can modify energy fluxes and influence broader melt patterns in subarctic alpine environments. Understanding these processes is essential for improving snowmelt modelling and predicting hydrological changes in mountain regions affected by climate change.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"237 ","pages":"Article 104534"},"PeriodicalIF":3.8,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pot-cover effect in permafrost embankment: Laboratory experimental reproduction and prevention measures simulation 多年冻土路基壶盖效应：实验室实验再现及预防措施模拟

IF 3.8 2区工程技术

Cold Regions Science and Technology Pub Date : 2025-04-27 DOI: 10.1016/j.coldregions.2025.104529

Yuefeng Liu , Mingli Zhang , Dongmiao Hao , Zhi Wen , Ruiling Zhang , Wei Feng

{"title":"Pot-cover effect in permafrost embankment: Laboratory experimental reproduction and prevention measures simulation","authors":"Yuefeng Liu , Mingli Zhang , Dongmiao Hao , Zhi Wen , Ruiling Zhang , Wei Feng","doi":"10.1016/j.coldregions.2025.104529","DOIUrl":"10.1016/j.coldregions.2025.104529","url":null,"abstract":"<div><div>Under the influence of large temperature differences in permafrost regions, liquid water and vapor in the soil accumulate at the bottom of the impermeable layer, forming a pot-cover effect. The phenomenon leads to increased embankment filler porosity, reduces bearing capacity, and exacerbated frost heave and thaw settlement issues. However, the pot-cover effect in embankment in permafrost regions has not yet been verified. This study conducted hydro-thermal transfer experiments using a moisture migration tester and combined numerical simulations to study the migration and accumulation processes of moisture within embankment in permafrost regions, aiming to verify the existence of the pot-cover effect in embankments. Furthermore, based on the water-vapor-heat coupling model, this study explores prevention measures for the pot-cover effect through numerical simulation. The results indicate that: (1) the volumetric liquid water content within the soil sample depth range of 0 cm to 30 cm increased by 2.2 % to 4.9 %, confirming the presence of the pot-cover effect in permafrost regions. (2) both liquid water and vapor migrate upwards during the freezing period and downwards during the thawing period. The vapor flux exceeds that of liquid water during freezing, indicating that the moisture accumulation is mainly related to the vapor migration within the soil. (3) when an impermeable layer is placed at a depth of 0.5 m in embankment, the average volumetric liquid water content between 2.5 m and 0.5 m is 15.1 %, closely matching the initial value of 15 %. Thus, installing an impermeable layer at 0.5 m effectively mitigates the pot-cover effect in embankments</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"237 ","pages":"Article 104529"},"PeriodicalIF":3.8,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heat transfer characteristics resembling thermal semiconductor of expressway embankment with ventilation and open-block layer in warm and high-altitude permafrost regions 暖高原多年冻土区带通风敞挡层高速公路路堤类似热半导体的换热特性

IF 3.8 2区工程技术

Cold Regions Science and Technology Pub Date : 2025-04-26 DOI: 10.1016/j.coldregions.2025.104531

Chang Yuan , Qihao Yu , Dongwei Li , Lei Guo , Lele Lei , Zhenhua Wang , Yuanming Lai

{"title":"Heat transfer characteristics resembling thermal semiconductor of expressway embankment with ventilation and open-block layer in warm and high-altitude permafrost regions","authors":"Chang Yuan , Qihao Yu , Dongwei Li , Lei Guo , Lele Lei , Zhenhua Wang , Yuanming Lai","doi":"10.1016/j.coldregions.2025.104531","DOIUrl":"10.1016/j.coldregions.2025.104531","url":null,"abstract":"<div><div>Active cooling methods have been widely used to protect the underlying permafrost and maintain subgrade thermal stability. Based on the monitoring data of test expressway embankment in Beiluhe area on the Qinghai-Tibet Plateau, the thermal controlling mechanism of expressway embankment with ventilation duct and open block layer has been revealed by analyzing the heat transfer processes and ground temperature responses. The heat is mainly transferred by forced convection in the horizontal direction and weakly by natural convection in the vertical direction, and the horizontally and vertically equivalent thermal conductivity in cold period is approximately 6.25 and 3 times of that in warm season, respectively, exhibiting thermal semiconductor effect in both directions. The net heat released state is provided for the underlying frozen soil foundation, and the total heat release is approximately 1.2 times of the total heat absorption. A thick and wide cold permafrost layer (T < -1.0 °C) has been generated gradually with its permafrost table rising and ground temperature decreasing. Otherwise, it has been found that the decline of wind speed from shady side to sunny side in the block layer contributes to the asymmetrical temperature field of subgrade like the “sunny-shady slope effect”. This achievement has deepened the understanding of the cooling methods, and it will contribute to developing the cooling efficiency and optimizing the embankment structure to protect the underlying frozen soil foundation in the warm and high-altitude permafrost regions.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"237 ","pages":"Article 104531"},"PeriodicalIF":3.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution characterization of moisture migration and pressure-melting of artificially frozen soft soil based on low-temperature triaxial seepage MRI system 基于低温三轴渗流MRI系统的人工冻结软土水分迁移与压力融化演化特征

IF 3.8 2区工程技术

Cold Regions Science and Technology Pub Date : 2025-04-26 DOI: 10.1016/j.coldregions.2025.104533

Jie Zhou , Huade Zhou , Chao Ban , Zhenming Shi , Chengjun Liu , Lujia Chen

{"title":"Evolution characterization of moisture migration and pressure-melting of artificially frozen soft soil based on low-temperature triaxial seepage MRI system","authors":"Jie Zhou , Huade Zhou , Chao Ban , Zhenming Shi , Chengjun Liu , Lujia Chen","doi":"10.1016/j.coldregions.2025.104533","DOIUrl":"10.1016/j.coldregions.2025.104533","url":null,"abstract":"<div><div>The artificial ground freezing method has been increasingly applied in complex construction environments, including coastal seepage and ground stress environments. To investigate the water migration and pressure-melting characteristics of artificially frozen clay and sandy silt under seepage boundary conditions, a self-developed low-temperature triaxial multiphase seepage Magnetic Resonance Imaging (MRI) test system was used to analyze the seepage channel development, water migration and pore structure changes of soft soil under the coupling effects of freezing and seepage. Additionally, the evolution of ice during pressure melting and the pore size distribution of frozen soft soils were obtained. The results revealed that seepage action created non-uniform seepage channels in frozen clay, which were concentrated near the seepage outlet, while sandy silt formed more uniform seepage channels. Under the coupling effects of freezing and seepage, at −30 °C, the unfrozen water content inside the soil gradually decreased by 40 % and 94 %, respectively, compared to that at room temperature, and the sandy silt was almost completely frozen. The pressure melting facilitated the gradual conversion of ice into water and increased the unfrozen water content within the clay. Under the coupling effects of freezing and seepage, micropores were predominantly observed in both clay and sandy silt. The percentage of micropores in clay remained at 100 % under different pressures, demonstrating the high stability of the microporous structure under high-stress conditions. This study can promote the development of frozen soil testing technology and provides a scientific theoretical basis for infrastructure construction in artificial freezing projects.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"237 ","pages":"Article 104533"},"PeriodicalIF":3.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ice crystal structure melting: insights from molecular dynamics simulations 冰晶结构融化：从分子动力学模拟的见解

IF 3.8 2区工程技术

Cold Regions Science and Technology Pub Date : 2025-04-25 DOI: 10.1016/j.coldregions.2025.104528

Ran Wang , Shaohong Cheng , David S.-K. Ting , Arash Raeesi , Sean McTavish , Annick D'Auteuil

{"title":"Ice crystal structure melting: insights from molecular dynamics simulations","authors":"Ran Wang , Shaohong Cheng , David S.-K. Ting , Arash Raeesi , Sean McTavish , Annick D'Auteuil","doi":"10.1016/j.coldregions.2025.104528","DOIUrl":"10.1016/j.coldregions.2025.104528","url":null,"abstract":"<div><div>Climate change poses many new engineering challenges, such as the increasing number of ice falling incidents on cables of cable-supported bridges. This presents a significant risk to bridge users and society. A thorough understanding of the ice melting process and the impact of weather conditions on its progression is pivotal to elucidate the mechanisms of ice detachment from bridge stay cables and predict its occurrence to prevent any potential ice falling events. The current paper presents a numerical investigation of the transition process from ice to water based on molecular dynamics (MD) simulations using three water models of SPC/E, TIP3P and TIP4P. The water phase change in a piece of pure ice crystal consisting of 3072 atoms is tracked via the tetrahedral order parameter. The performance of these three water models is evaluated based on the predicted ice melting process, melting temperature, numerical stability and computational cost. The impact of thermal conditions, cut-off distance, and ice crystal structure size on the simulated ice melting process are assessed. Ice melting characteristics are revealed by examining the ice cube's internal structure at the molecular level. In addition, the computational efficiency of various CPUs and GPUs in performing MD simulations are compared. The findings from this study not only enhance the understanding of ice melting process at the molecular level, but also provide valuable guidance for optimizing practices in simulations prior to conducting more complex simulations of ice detachment from stay cables.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"237 ","pages":"Article 104528"},"PeriodicalIF":3.8,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0