International Journal of Thermal Sciences最新文献_第5页

Mechanism of transition between oscillating and pulsating–circulating flows in bottom-heated pulsating heat pipe based on simple simulation model 基于简单仿真模型的底加热脉动热管振荡流与脉动循环流转换机理

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-06-11 DOI: 10.1016/j.ijthermalsci.2025.110035

Shota Ouchi , Kizuku Kurose , Kazushi Miyata

{"title":"Mechanism of transition between oscillating and pulsating–circulating flows in bottom-heated pulsating heat pipe based on simple simulation model","authors":"Shota Ouchi , Kizuku Kurose , Kazushi Miyata","doi":"10.1016/j.ijthermalsci.2025.110035","DOIUrl":"10.1016/j.ijthermalsci.2025.110035","url":null,"abstract":"<div><div>Pulsating heat pipes (PHPs) have potential for use in compact cooling technology. However, the self-excited oscillation phenomena are extremely complex. In this study, to clarify the essential mechanism of the transition between oscillating flow and pulsating–circulating flow in bottom-heated PHPs, a simple simulation model was developed. The characteristics of the model include treating gas–liquid two-phase flow as homogeneous flow and combining Lagrangian and Eulerian discretization. Because PHPs have many parameters that affect their flow behavior, we intentionally limited some physical dynamics and attempted to elucidate the essential transition mechanisms. Focusing on a two-turn bottom-heated PHP with an inner diameter of 0.8 mm, simulations with varying heat fluxes were conducted. The results reveal that oscillating flow predominates at low heat fluxes, whereas pulsating–circulating flow occurs at high heat fluxes. Based on the simulation results, it is revealed that the dominant driving force determining the flow pattern is the mass difference between the adjacent channels. With a high heat transfer rate, a significant quality change is realized in the heating and cooling sections, resulting in a consistent mass difference that maintains fluid circulation. A pulsation in the circulating flow is also predicted to be caused by mass differences. Conversely, when the heat transfer rate is low, the mass change during passage through the heat transfer section diminishes, leading to oscillations caused by a smaller mass difference between adjacent channels. Furthermore, the effect of PHP specifications on the transition between pulsating–circulating and oscillating flows was investigated.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110035"},"PeriodicalIF":4.9,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264031","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

Mechanism of anisotropic in-plane thermal conductivity in two-dimensional nanoribbons 二维纳米带平面内各向异性导热机理研究

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-06-11 DOI: 10.1016/j.ijthermalsci.2025.110072

Yun Dong , Mengping Huang , Yi Tao , Rong Deng , Hao Cheng , Yuxin Zhang , Xin Zhang

{"title":"Mechanism of anisotropic in-plane thermal conductivity in two-dimensional nanoribbons","authors":"Yun Dong , Mengping Huang , Yi Tao , Rong Deng , Hao Cheng , Yuxin Zhang , Xin Zhang","doi":"10.1016/j.ijthermalsci.2025.110072","DOIUrl":"10.1016/j.ijthermalsci.2025.110072","url":null,"abstract":"<div><div>The growing demand for two-dimensional (2D) nanodevices with long-term stability and optimal performance has brought in-plane thermal conductivities (IPTCs) of 2D materials into focus. This is due to their strong potential for efficient thermal management. In this study, we systematically investigate the IPTCs of graphene nanoribbons (GNRs) and black phosphorus nanoribbons (BPNRs) using non-equilibrium molecular dynamics simulations. The IPTCs of both nanoribbons exhibit a considerable anisotropy, with the highest IPTCs observed in the zigzag direction and the lowest in the armchair direction. This anisotropy is characterized by substantial differences, with values of 38.3 % for GNR and 72.8 % for BPNR, attributed to the oriented phonon group velocity derived from phonon dispersion analysis. Both zigzag and armchair IPTCs increase with system size, and the infinite-size IPTCs are obtained through inverse fitting. Additionally, we observe a decrease in IPTC with increasing temperature, attributed to enhanced phonon-phonon scattering. Notably, the anisotropic IPTC difference diminishes at higher temperatures. Finally, the disparate structural symmetries between GNR and BPNR underpin the discrepancies in their heat flux distributions, with the orthogonal lattice of BP amplifying the directional variations in phonon velocities. This study provides significant theoretical insights into the anisotropic thermal properties, facilitating the design of efficient heat transport channels in 2D nanoribbon-based nanodevices.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110072"},"PeriodicalIF":4.9,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264030","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

How phonon coherence develops and contributes to heat conduction in periodic and aperiodic superlattices 声子相干是如何在周期和非周期超晶格中发展和促进热传导的

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-06-10 DOI: 10.1016/j.ijthermalsci.2025.110018

Theodore Maranets, Yan Wang

{"title":"How phonon coherence develops and contributes to heat conduction in periodic and aperiodic superlattices","authors":"Theodore Maranets, Yan Wang","doi":"10.1016/j.ijthermalsci.2025.110018","DOIUrl":"10.1016/j.ijthermalsci.2025.110018","url":null,"abstract":"<div><div>This work investigates the impact of device length on thermal conductivity in periodic and aperiodic superlattices (SLs). While it is well known that thermal conductivity in aperiodic SLs exhibits a weaker dependence on device length compared to periodic SLs, existing literature attributes this behavior to the scattering of coherent phonons by aperiodically arranged interfaces. Through atomistic wave-packet simulations, we show that coherent phonons in aperiodic SLs have spatial extensions limited to a certain number of SL layers, which prevents transmission if the extension is shorter than the device length. Specifically, the disordered interface spacing in aperiodic SLs causes coherent phonons to behave as non-propagative vibrational modes, resulting in diffuse energy transmission. In periodic SLs, however, coherent phonons can propagate across the entire structure, enabling high transmission. The difference between ballistic transport in periodic SLs and diffuse transport in aperiodic SLs is captured in the length-dependence of phonon transmission. These findings provide new insights into phonon coherence and its implications for heat conduction in superlattices, with potential applications in the thermal design of nanostructures.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110018"},"PeriodicalIF":4.9,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243463","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

Optimizing symmetric-sinusoidal microchannel heat sinks with butterfly prisms for high temperature superconducting applications: An ANN-based approach 用于高温超导应用的蝶棱镜对称正弦微通道散热器优化：一种基于人工神经网络的方法

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-06-10 DOI: 10.1016/j.ijthermalsci.2025.110030

Jiacheng Zhang , Baojun Ge , Zhide Gou , Jiancheng Zhang , Abdullah Saeed , Khalid Faisal , Karthikeyan Ramanathan

{"title":"Optimizing symmetric-sinusoidal microchannel heat sinks with butterfly prisms for high temperature superconducting applications: An ANN-based approach","authors":"Jiacheng Zhang , Baojun Ge , Zhide Gou , Jiancheng Zhang , Abdullah Saeed , Khalid Faisal , Karthikeyan Ramanathan","doi":"10.1016/j.ijthermalsci.2025.110030","DOIUrl":"10.1016/j.ijthermalsci.2025.110030","url":null,"abstract":"<div><div>As electrical devices (EDs) advance in power density and miniaturization, microchannel heat sinks (MCHSs) gain extensive attention for efficient heat dissipation. Among these, the symmetric-sinusoidal microchannel heat sink (SMHS), which balances thermal and hydraulic performance, is emerging as one of the most promising cooling solution for EDs. Yet its performance breakthroughs are often constrained by high pressure drop (ΔP) losses and suboptimal heat transfer efficiency. This study proposes a SMHS integrated with butterfly prisms (SMHS-BP). By optimizing the structural and arrangement parameters of the BP (wing distance D<sub>u</sub>, tail distance D<sub>v</sub>, and flow direction distance D<sub>h</sub>), an artificial neural network (ANN) was employed to predict the Nusselt number and ΔP for different designs. The predictions, compared with simulation results, explore the heat transfer mechanisms of SMHS-BP and determine specific parameters for the overall ideal framework (OIF) and thermal ideal framework (TIF). Results demonstrate that the incorporation of BP significantly reduces fluid momentum decay at microchannel wave crests, promoting multidirectional fluid mixing and enhancing heat transfer. Furthermore, numerical simulations of the thermal behavior of the latest-generation high temperature superconducting synchronous condenser (HT-SSC) equipped with SMHS-BP demonstrated the promising application prospects of microchannels in superconducting power systems.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110030"},"PeriodicalIF":4.9,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255300","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

Pore-scale simulation of boiling in biporous media incorporating capillary effects 考虑毛细效应的双孔介质中沸腾的孔隙尺度模拟

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-06-10 DOI: 10.1016/j.ijthermalsci.2025.110056

M.E. Nimvari , T. Persoons , M.J. Gibbons

{"title":"Pore-scale simulation of boiling in biporous media incorporating capillary effects","authors":"M.E. Nimvari , T. Persoons , M.J. Gibbons","doi":"10.1016/j.ijthermalsci.2025.110056","DOIUrl":"10.1016/j.ijthermalsci.2025.110056","url":null,"abstract":"<div><div>Biporous media, characterized by the coexistence of small pores for enhanced capillarity and large pores for improved permeability, offer promising performance in cooling applications. However, understanding the detailed boiling and capillary dynamics within such complex porous structures remains limited due to experimental challenges and the lack of pore-scale modeling. To address this gap, the present study conducts a pore-scale numerical simulation of boiling capillary-pumping flow in biporous media, using a novel, simplified geometric model composed of solid particle clusters. For comparison, a conventional monoporous structure with an in-line particle arrangement is also analyzed. Simulations are performed across a wide range of heat fluxes (0.1–250 W/cm<sup>2</sup>), revealing three distinct boiling regimes: natural convection, bubbly and bubble-column flow, and film boiling. A key finding is that while monoporous structures perform better at lower heat fluxes due to reduced vapor trapping, biporous media demonstrate superior thermal performance at high heat fluxes, achieving a peak evaporator conductance of approximately 3.4 W/cm<sup>2</sup>K, about 55 % higher than the maximum value observed in the monoporous case. Additionally, the biporous media exhibit greater resilience to dry-out compared to the monoporous case. The results align well with previous experimental literature and provide valuable insights into the complex pore-scale interactions among capillarity, boiling behavior, and pore geometry–insights that are challenging to investigate experimentally. This simulation framework can inform the design of next-generation biporous structures for practical applications such as heat pipes, battery thermal management systems and solar stills, among many others.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110056"},"PeriodicalIF":4.9,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255299","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

Optimization of film cooling hole configuration on leading edge plate of jet impingement/effusion cooling system 射流冲击/射流冷却系统前缘板气膜冷却孔结构优化

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-06-10 DOI: 10.1016/j.ijthermalsci.2025.110036

Sungji Youn , Suhwan Lee , Mohammad Nazemi Babadi , Mirae Kim , Eunseop Yeom

{"title":"Optimization of film cooling hole configuration on leading edge plate of jet impingement/effusion cooling system","authors":"Sungji Youn , Suhwan Lee , Mohammad Nazemi Babadi , Mirae Kim , Eunseop Yeom","doi":"10.1016/j.ijthermalsci.2025.110036","DOIUrl":"10.1016/j.ijthermalsci.2025.110036","url":null,"abstract":"<div><div>This study proposes an approach to enhance film cooling efficiency by optimizing the arrangement of film cooling holes using computational fluid dynamics (CFD), and artificial intelligence (AI)-based methods. Both adiabatic and conjugate heat transfer (CHT) numerical simulations were performed on the curved surface of the leading edge of a turbine blade vane. A feed-forward neural network (FFNN) was employed to evaluate and improve the cooling performance using a performance index that assigned equal weights to the area-averaged cooling effectiveness and its standard deviation. Experimental validation using non-contact phosphor thermometry was performed to assess heat transfer performance and to select an appropriate turbulence model by comparing temperature fields and Nusselt number distributions. The optimization process treated the hole positions as design variables and identified configurations that outperformed the original layout. The optimized adiabatic geometry demonstrated a 4.8 % improvement in performance, while an elliptical-hole configuration derived from the CHT-optimized design achieved a 6.9 % performance gain. These findings highlight the effectiveness of combining CFD, AI, and experimental methods to improve film cooling designs in turbine applications.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110036"},"PeriodicalIF":4.9,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243009","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

The effect of porous lattice structures on jet impingement heat dissipation performance 多孔晶格结构对射流冲击散热性能的影响

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-06-09 DOI: 10.1016/j.ijthermalsci.2025.110071

Miao Qian , Shaoyu Huang , Zhong Xiang , Le Liu , Yatong Yu , Jianxin Zhang

{"title":"The effect of porous lattice structures on jet impingement heat dissipation performance","authors":"Miao Qian , Shaoyu Huang , Zhong Xiang , Le Liu , Yatong Yu , Jianxin Zhang","doi":"10.1016/j.ijthermalsci.2025.110071","DOIUrl":"10.1016/j.ijthermalsci.2025.110071","url":null,"abstract":"<div><div>Porous lattice structures can enhance heat transfer performance due to their large specific surface area. In this study we investigate the thermal characteristics of four lattice porous structures under jet impingement conditions: Body-Centered Cubic (BCC), Diamond, Face-Centered Cubic (FCC), and Three-Periodic Minimal Surface (TPMS). Through computational fluid dynamics (CFD) simulations and experimental validations, we analyze the effects of structural parameters, including unit cell size and porosity, on the heat transfer performance and pressure drop. The results demonstrate that the Diamond lattice structure exhibits superior heat dissipation performance, with an optimal porosity of 0.83 and unit cell size of 2 mm. The Diamond structure not only exhibits the highest Nusselt number (up to 1626) but also the lowest pressure drop (12 Pa) among the four configurations. The comprehensive evaluation factor also confirms that the Diamond structure is the optimal choice for heat transfer applications. Additionally, we validate the numerical simulation results with an experimental platform, demonstrating the accuracy of the computational model. The findings of this study may aid design and optimization of lattice porous structures for enhancing heat transfer in high-power electronic devices.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110071"},"PeriodicalIF":4.9,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243462","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

Preliminary design and assessment of the residual heat removal system in a nuclear silent heat pipe-cooled reactor 核静声热管冷却堆余热排出系统初步设计与评价

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-06-09 DOI: 10.1016/j.ijthermalsci.2025.110049

Zeqin Zhang, Chenglong Wang, Jinlu Huang, Kailun Guo, Wenxi Tian, Guanghui Su, Suizheng Qiu

{"title":"Preliminary design and assessment of the residual heat removal system in a nuclear silent heat pipe-cooled reactor","authors":"Zeqin Zhang, Chenglong Wang, Jinlu Huang, Kailun Guo, Wenxi Tian, Guanghui Su, Suizheng Qiu","doi":"10.1016/j.ijthermalsci.2025.110049","DOIUrl":"10.1016/j.ijthermalsci.2025.110049","url":null,"abstract":"<div><div>Heat pipe-cooled reactors (HPRs) have gained significant attention due to their compact design, passive heat transfer capability, and enhanced inherent safety features. Although numerous HPR designs have demonstrated passive operational characteristics, the design of the residual heat removal system (RHRS) remains a key technical challenge, as it serves as the ultimate heat sink for the entire system, ensuring core safety. This study presents the preliminary design and assessment of the RHRS in NUSTER, a 100 kWe-level HPR optimized for underwater deployment. First, the NUSTER-RHRS is designed as two independent heat removal systems to enhance system safety and redundancy. Then, a comprehensive HPR simulation framework is developed, validated, and utilized to analyze the complete heat transfer pathway from the core to the final heat sink. Steady-state and transient simulations demonstrate that natural circulation alone can sustain core cooling following a single-sided RHRS failure while preserving over 60 % of nominal electrical power output. Additionally, the results reveal that core-matrix temperature feedback mitigates the negative reactivity introduced by fuel temperature reduction, further enhancing the self-regulating safety of HPRs. These findings provide valuable insights for refining RHRS designs in future next-generation HPR applications.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110049"},"PeriodicalIF":4.9,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243008","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 study on turbulent drag-reducing performance of a long-term stable, high-temperature-resistant surfactant additive 一种长期稳定、耐高温表面活性剂添加剂湍流减阻性能的实验研究

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-06-07 DOI: 10.1016/j.ijthermalsci.2025.110058

Kai-Ting Wang , Zeng-Kun Zhan , Hong-Na Zhang , Xiao-Bin Li , Kai-Yang Qu , Feng-Chen Li

{"title":"Experimental study on turbulent drag-reducing performance of a long-term stable, high-temperature-resistant surfactant additive","authors":"Kai-Ting Wang , Zeng-Kun Zhan , Hong-Na Zhang , Xiao-Bin Li , Kai-Yang Qu , Feng-Chen Li","doi":"10.1016/j.ijthermalsci.2025.110058","DOIUrl":"10.1016/j.ijthermalsci.2025.110058","url":null,"abstract":"<div><div>Adding drag reduction additives (DRAs) to district heating systems can effectively reduce pressure losses during the heat and fluid transport. However, there are remarkably limited choices on DRAs that can be stably applied under high-temperature conditions (≥100 °C) over extended periods. To achieve effective drag reduction (DR) at high temperature, this paper reports a long-term stable, high-temperature-resistant surfactant additive (Erucamide Propyl Trimethylammonium Chloride/Sodium Salicylate, EPTAC/NaSal), which shows efficient drag-reducing performance in a wide range of temperature. The detailed characteristics of EPTAC/NaSal solutions including their rheological properties, DR performance, efficiency in reducing pump power requirements and lifetime were experimentally evaluated under varying concentrations, temperatures, and counterion ratios. The effective DR temperature of EPTAC/NaSal and the starting drag-reducing Reynolds number (<em>Re</em><sub>1</sub>) both increase with the concentration. More counterions can increase the solution viscosity, extend its relaxation time, promote the formation of drag-reducing microstructures, and significantly raise the upper temperature limit for DR. EPTAC/NaSal solution exhibits excellent DR effects within the temperature range of 20∼110 °C, achieving DR rate of approximately 78 % at Reynolds number (<em>Re</em>) around 280,000, and reducing pump power consumption by 28 %. After continuous operation more than 3 months, the solution retains good DR efficiency with a decline of no more than 16 % compared to the initial value. In sum, the detailed experimental results imply the significant potential of EPTAC/NaSal in the long-distance transportation system under high-temperature.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110058"},"PeriodicalIF":4.9,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231089","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

Thermal runaway avoidance via liquid-immersion for cylindrical lithium-ion batteries: Experimental characterizations 圆柱形锂离子电池通过液体浸泡避免热失控：实验表征

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-06-07 DOI: 10.1016/j.ijthermalsci.2025.110047

Zhendong Zhang, Lei Sheng, Houji Zhang, Linxiang Fu

{"title":"Thermal runaway avoidance via liquid-immersion for cylindrical lithium-ion batteries: Experimental characterizations","authors":"Zhendong Zhang, Lei Sheng, Houji Zhang, Linxiang Fu","doi":"10.1016/j.ijthermalsci.2025.110047","DOIUrl":"10.1016/j.ijthermalsci.2025.110047","url":null,"abstract":"<div><div>Effective control of the thermal runaway behavior of lithium-ion batteries is of paramount importance for enhancing the safety of electric vehicles. This study examines the thermal runaway behavior of cylindrical 21700 batteries through experimental tests and puts forward a regulation method for thermal runaway behavior as per liquid-immersion. Influence of state of charge and immersion ratio on the battery's thermal runaway behavior is investigated. It is shown that when the state of charge in the battery is lower than 50 % and high-temperature thermal runaway is initiated at the upper part of the battery, the initiation speed is relatively fast. With the increase of battery power, the triggering time of thermal runaway is significantly shortened. The minimum thermal safety distance of the battery pack in the non-immersion state is 5.0 mm, and the immersion temperature control system can reduce the safety distance to 3.0 mm and lower the peak temperature of adjacent batteries by nearly 60 %. This study would provide a reference for the characterization of thermal runaway behavior and thermal safety management of cylindrical batteries.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110047"},"PeriodicalIF":4.9,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231088","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