Thermal Science and Engineering Progress最新文献_第8页

Comprehensive study on heat transfer characteristics and high-efficiency thermal control method of bearings on swivel duct nozzle 旋转导管喷嘴轴承传热特性及高效热控制方法的综合研究

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-08-14 DOI: 10.1016/j.tsep.2025.103981

Jing-yang Zhang , Zheng-xi Gong , Feng-na Cheng , Xin-zhu Mou , Jin-xin Geng , Zhen-xi Yang , Lei Yu , Hao Zhong

{"title":"Comprehensive study on heat transfer characteristics and high-efficiency thermal control method of bearings on swivel duct nozzle","authors":"Jing-yang Zhang , Zheng-xi Gong , Feng-na Cheng , Xin-zhu Mou , Jin-xin Geng , Zhen-xi Yang , Lei Yu , Hao Zhong","doi":"10.1016/j.tsep.2025.103981","DOIUrl":"10.1016/j.tsep.2025.103981","url":null,"abstract":"<div><div>Thrust vectoring technology is crucial for aircraft to achieve Vertical/Short Take-Off and Landing (V/STOL) and high-maneuverability flight. In swivel joint of 3-Bearing Swivel Duct Nozzle (3BSD), the large-size bearing is the core component, which is highly sensitive to its temperature level and uneven temperature distribution, and impacts flight safety. This study investigates the temperature distribution and heat transfer characteristics of 3BSD bearings in different states, identifying two key factors causing uneven temperature distributions: varying convection intensity and weak thermal conduction due to high contact resistance between bearing components. Especially at high altitudes, maximum temperature difference between the inner and outer raceway reaches 114.9 K. Based on these findings, a thermal control configuration named Configuration with Protruded Arc Connection Edge for 3BSD bearings is introduced, combining passive and active thermal control. Numerical analysis indicates that newly proposed configuration not only reduces the inner- and outer raceway temperature difference to within 1 K, but also saves up to 3 kg/s of bleed air for the aircraft’s power system compared to traditional active thermal control, offering a dependable solution for the thermal control of large-size bearings in thrust vectoring nozzles of future aircrafts.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"66 ","pages":"Article 103981"},"PeriodicalIF":5.4,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Research on heat conduction and performance optimization of electric heating ultra-high performance concrete pavement snow melting and ice removal systems in cold regions 寒区电加热超高性能混凝土路面融雪除冰系统热传导及性能优化研究

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-08-14 DOI: 10.1016/j.tsep.2025.103987

She Yu , Zhi Chen , Henglin Xiao , Qiang Ma , Shishen Du , Lihao Liu

{"title":"Research on heat conduction and performance optimization of electric heating ultra-high performance concrete pavement snow melting and ice removal systems in cold regions","authors":"She Yu , Zhi Chen , Henglin Xiao , Qiang Ma , Shishen Du , Lihao Liu","doi":"10.1016/j.tsep.2025.103987","DOIUrl":"10.1016/j.tsep.2025.103987","url":null,"abstract":"<div><div>The application of Ultra-High Performance Concrete (UHPC) in electrical heating snow-melting pavements in cold regions not only ensures the structural safety and durability of the pavement under freeze–thaw cycles due to the excellent mechanical properties of UHPC, but also enhances thermal efficiency with its high thermal conductivity. This paper conducts temperature rise and snow melting tests on electrical heating UHPC pavements and, combined with numerical simulations, studies the heat transfer performance of the electrical heating UHPC pavement. The research results indicate that a steel fiber volume content of 2.0 % represents the optimal dosage for UHPC, effectively balancing both thermal conductivity and mechanical performance. Moreover, reducing the spacing between heating wires enhances the surface temperature rise efficiency and snow-melting rate of the UHPC pavement. Compared to conventional concrete systems, the electrically heated UHPC pavement demonstrates significantly superior performance in terms of heating response speed and energy efficiency. Finally, a matching table for heating power and structural design parameters for environments ranging from −5 °C to −30 °C is established. Furthermore, a regression prediction model based on heat transfer mechanisms is proposed to enable rapid estimation of power density for UHPC heating systems. This study offers a solid theoretical foundation and practical reference for the development of active snow and ice removal technologies on roadways in severe cold regions.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"65 ","pages":"Article 103987"},"PeriodicalIF":5.4,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 heat transfer characteristics of ultra-thin vapor chamber manufactured by laser technology 激光制造超薄蒸汽室传热特性的实验研究

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-08-14 DOI: 10.1016/j.tsep.2025.103984

Jiu Yu , Wenqi Fang , Jinqing Zhan , Min Liu , Zu’an Chen , Ying Liu , Feifei Liu , Yong Li

{"title":"Experimental study on heat transfer characteristics of ultra-thin vapor chamber manufactured by laser technology","authors":"Jiu Yu , Wenqi Fang , Jinqing Zhan , Min Liu , Zu’an Chen , Ying Liu , Feifei Liu , Yong Li","doi":"10.1016/j.tsep.2025.103984","DOIUrl":"10.1016/j.tsep.2025.103984","url":null,"abstract":"<div><div>Laser technology offers the advantages of high efficiency, processing speeds and controllable parameter, which making it increasingly popular in the material processing and manufacturing industry. However, the application of laser technology in the design and manufacturing process of ultra-thin vapor chamber (UTVC) was still in its infancy. In particular, systematic investigations into the application of laser technology for UTVC with thickness below 1.0 mm remain limited. To address this gap, this paper proposes an UTVC with thickness of 0.6 mm fabricated by laser processing technology. The laser technology applied include two aspects: the first involves welding the UTVC using laser welding; and the second focuses controlling the surface morphology of the wick structure through laser etching. The effect of laser welding parameter (such as power, pulse width, speed and frequency) on the forming quality of the UTVC were investigated, and the influence of laser etching on the surface morphology and capillary performance of the wick structure was compared. The results indicate that the optimal laser welding parameters were 2.5 kW, 1.0 ms, 1.0 mm/s and 12 Hz, and laser etching increases the capillary rising height of the single-layer copper mesh and three-layer copper mesh wicks by 13.72 % and 6.56 %, respectively. In addition, the maximum heat transfer capacity of the UTVC increase from 10 W to 12 W when laser etching was applied. The findings of this paper offer valuable insights and guidance for incorporating laser technology into the design and fabrication of UTVCs.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"66 ","pages":"Article 103984"},"PeriodicalIF":5.4,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Self-cooled 15 kW-scale radial inflow turbine of organic Rankine cycle system: Development and experiment 有机朗肯循环系统自冷15kw级径向流入涡轮的研制与试验

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-08-13 DOI: 10.1016/j.tsep.2025.103975

Qiyao Zuo , Pengcheng Liu , Weijia Meng , Xianyu Zeng , Jinwen Cai , Xuan Wang , Hua Li , Hua Tian , Gequn Shu

{"title":"Self-cooled 15 kW-scale radial inflow turbine of organic Rankine cycle system: Development and experiment","authors":"Qiyao Zuo , Pengcheng Liu , Weijia Meng , Xianyu Zeng , Jinwen Cai , Xuan Wang , Hua Li , Hua Tian , Gequn Shu","doi":"10.1016/j.tsep.2025.103975","DOIUrl":"10.1016/j.tsep.2025.103975","url":null,"abstract":"<div><div>Amidst growing global concerns over energy sustainability, organic Rankine cycle (ORC) systems have emerged as a pivotal technology for waste heat recovery (WHR), with radial-inflow turbines (RITs) playing a critical role in the performance of 5–50 kW-scale systems. To address the engineering challenges of RIT miniaturization, weight reduction, effective cooling, and efficiency enhancement, this study presents an integrated development framework for a 15 kW self-cooling ORC RIT-generator, encompassing a three-phase methodology: (1) one-dimensional aerodynamic design, (2) three-dimensional computational fluid dynamics (CFD) simulation, and (3) prototype validation through experimental testing. The framework’s validity was systematically verified by theoretical predictions, numerical simulations, and empirical data. Experimental results demonstrated a peak electricity output of 12.14 kW with a turbine-generator efficiency of 78.5 %, and a maximum electricity generation efficiency of 84.12 % at 41,919 rpm. The 15 kW-scale RIT-generator designed in this paper has the characteristics of high efficiency, small size, light weight and effective self-cooling capability, and demonstrates significant potential for practical application.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"66 ","pages":"Article 103975"},"PeriodicalIF":5.4,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144860731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 effects of alkaline flux dissolution in blast furnace tuyere cinder slag 高炉风口煤渣碱性熔剂溶解的热效应

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-08-13 DOI: 10.1016/j.tsep.2025.103979

Ziyu Guo, Yanbing Zong, Jianliang Zhang, Huangyu Shi, Yanxiang Liu, Kexin Jiao

{"title":"Thermal effects of alkaline flux dissolution in blast furnace tuyere cinder slag","authors":"Ziyu Guo, Yanbing Zong, Jianliang Zhang, Huangyu Shi, Yanxiang Liu, Kexin Jiao","doi":"10.1016/j.tsep.2025.103979","DOIUrl":"10.1016/j.tsep.2025.103979","url":null,"abstract":"<div><div>Clarifying the thermal effects of alkaline flux dissolution in the cinder slag of the bird’s nest area at the blast furnace tuyere is essential for further reducing carbon consumption in ironmaking. In this study, the effects of individual and combined additions of CaO, MgO, and FeO on the viscosity of cinder slag under heat fluctuations of ±5 % were systematically investigated. It was found that CaO promoted a strong thermo-chemical synergistic effect, whereas MgO and FeO induced antagonistic interactions, resulting in distinct changes in slag viscosity. The synergistic effects of Ca-Mg and Ca-Fe combinations were shown to enhance thermo-chemical coupling, significantly reduce slag viscosity, and maintain high thermal stability under reduced heat. When the heat was decreased by 2.5 %–5.0 %, the average viscosity of the Ca-Mg and Ca-Fe systems decreased by 57.37 % and 29.83 %, respectively, while thermal stability increased by 35.24 % and 31.75 %. Differential scanning calorimetry further revealed that flux dissolution was accompanied by a sequence of thermal reactions: dissolution endothermic, slag formation exothermic, and melting endothermic processes. Endothermic effects were found to be more pronounced at higher temperatures. The dissolution of a small amount of CaO exhibited low heat absorption and minimal impact on heat fluctuation. Based on these thermal effects, a slag composition optimization strategy was proposed, in which the basicity is increased from 0.70 to 0.90. This study provides important theoretical support for developing a high-efficiency, low-consumption smelting model for blast furnace operations.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"65 ","pages":"Article 103979"},"PeriodicalIF":5.4,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 impact of the dynamic relationship among three types of scrap steel on long-term forecasting of scrap recycling: A method introducing steel flow allocation matrix into dynamic material flow analysis 三种类型废钢之间的动态关系对废钢回收长期预测的影响——一种将钢流分配矩阵引入动态物料流分析的方法

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-08-11 DOI: 10.1016/j.tsep.2025.103971

Xingyuan Yang , Honghua Yang , Yuezhang He , Linwei Ma , Zheng Li , Weidou Ni

{"title":"The impact of the dynamic relationship among three types of scrap steel on long-term forecasting of scrap recycling: A method introducing steel flow allocation matrix into dynamic material flow analysis","authors":"Xingyuan Yang , Honghua Yang , Yuezhang He , Linwei Ma , Zheng Li , Weidou Ni","doi":"10.1016/j.tsep.2025.103971","DOIUrl":"10.1016/j.tsep.2025.103971","url":null,"abstract":"<div><div>The long-term forecasting of scrap recycling is a key issue in policy discussions of the low-carbon transition of the iron and steel industry, and the dynamic material flow analysis (DMFA) are popularly applied. However, most previous DMFA only focused on a detailed analysis of end-of-life scrap, and simply assumed that home scrap and fabrication scrap have a fixed ratio relative to crude steel production. This simplification fails to capture the impact of uncertainties arising from changes in the final steel consumption structure on scrap steel forecasting, due to the dynamic relationships within the steel industry chain. This study aims to introduce the steel flow allocation matrix (SFAM) into DMFA to unveil the dynamic relationship by establishing the relationships among three types of scrap, and verify the effectiveness of this SFAM-DMFA method by the case of China with a time line of 1949–2050. Based on the scrap steel forecasting, our model also estimated the future trend of electric arc furnace (EAF) steel production and traced the circulation of iron elements in 2050. Moreover, we discussed the impact of different policies and external factors on scrap steel forecasting by scenario analysis.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"66 ","pages":"Article 103971"},"PeriodicalIF":5.4,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144866436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 combustion characteristics and instability oscillations of NH3/H2/Air premixed flame in a pipe 管道内NH3/H2/空气预混火焰燃烧特性及不稳定振荡实验研究

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-08-11 DOI: 10.1016/j.tsep.2025.103974

Zhenghui Zhou , Sumei Zhang , Xiaoping Wen , Mingzhao Wang , Abiodun Oluwaleke OJO , Zhihan Yuan , Zhidong Guo , Rongkun Pan

{"title":"Experimental study on combustion characteristics and instability oscillations of NH3/H2/Air premixed flame in a pipe","authors":"Zhenghui Zhou , Sumei Zhang , Xiaoping Wen , Mingzhao Wang , Abiodun Oluwaleke OJO , Zhihan Yuan , Zhidong Guo , Rongkun Pan","doi":"10.1016/j.tsep.2025.103974","DOIUrl":"10.1016/j.tsep.2025.103974","url":null,"abstract":"<div><div>Ammonia (NH<sub>3</sub>) and hydrogen (H<sub>2</sub>) have garnered significant interest as promising carbon-free fuels. However, their combustion can induce unstable oscillations, potentially causing irreversible damage to combustion equipment. This study investigates the explosion characteristics and instability oscillations of NH<sub>3</sub>/H<sub>2</sub>/Air premixed flames in a pipe under varying equivalence ratio (Φ) and hydrogen volume fractions (<span><math><msub><mi>α</mi><msub><mi>H</mi><mn>2</mn></msub></msub></math></span>). Results indicate that the pressure curve closely follows the trend of the flame front position (FFP). Notably, when <span><math><msub><mi>α</mi><msub><mi>H</mi><mn>2</mn></msub></msub></math></span> increases from 50 % to 60 %, the flame propagation time (t<sub>p</sub>) is significantly reduced by 318 ms. Primary instability oscillations (PIOs) are present across all conditions, while secondary instability oscillations (SIOs) appear only under specific conditions, with frequencies varying by case. Increasing in <span><math><msub><mi>α</mi><msub><mi>H</mi><mn>2</mn></msub></msub></math></span> and Φ suppresses the occurrence of SIOs and high-frequency oscillations at the tail end. In addition, the flat structure of the flame front is a significant feature of the instability oscillatory transition. At laminar burning velocity (<em>S<sub>L</sub></em>) exceeds 10 cm/s, the smaller effective Lewis number (<em>Le<sub>eff</sub></em>) and <em>S<sub>L</sub></em> value, the greater the number of SIOs. This study provides critical theoretical insights for the design and optimization of industrial combustion systems, including burners and gas transportation infrastructure.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"66 ","pages":"Article 103974"},"PeriodicalIF":5.4,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144866282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Numerical study on thermal protection of turbofan engine exhaust system 涡扇发动机排气系统热防护数值研究

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-08-10 DOI: 10.1016/j.tsep.2025.103970

Shengwen Hou, Qiang Wang, Haiyang Hu

{"title":"Numerical study on thermal protection of turbofan engine exhaust system","authors":"Shengwen Hou, Qiang Wang, Haiyang Hu","doi":"10.1016/j.tsep.2025.103970","DOIUrl":"10.1016/j.tsep.2025.103970","url":null,"abstract":"<div><div>The optimized thermal protection structure can effectively reduce the nozzle wall temperature under high-temperature conditions, thereby improving thermal fatigue resistance and service life. This study investigates the cooling performance of the flanging structure on an axisymmetric nozzle under afterburning conditions, as well as its impact on infrared radiation intensity within a detection angle range of 55°–90°. During the research, the multiscale multigroup full-spectrum k-distribution (MSMGFSK) and multiscale multigroup wideband k-distribution (MSMGWB) models were employed to evaluate radiative heat transfer and infrared intensity. Numerical results demonstrate that a rationally designed flanging structure can effectively redirect cooling airflow from the convergent section channel to the divergent section wall, significantly reducing temperatures. Specifically, the maximum and average temperatures of the divergent section decreased by 164.4 K (14.6 %) and 222 K (23.5 %), respectively, with a negligible thrust coefficient loss of only 0.21 %. Additionally, the infrared radiation intensity (3–5 µm band) was reduced by 13 %, while the flanging structure also contributed to slight cooling of the heat shield and convergent section wall.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"65 ","pages":"Article 103970"},"PeriodicalIF":5.4,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

An improved ramp events forecasting of wind generating resources using ensemble learning of numerical weather prediction: The case of Jeju Island’s wind farms 利用数值天气预报的集成学习改进的风力发电资源斜坡事件预报：济州岛风电场的案例

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-08-10 DOI: 10.1016/j.tsep.2025.103936

Yujung Jo, Jin Hur

{"title":"An improved ramp events forecasting of wind generating resources using ensemble learning of numerical weather prediction: The case of Jeju Island’s wind farms","authors":"Yujung Jo, Jin Hur","doi":"10.1016/j.tsep.2025.103936","DOIUrl":"10.1016/j.tsep.2025.103936","url":null,"abstract":"<div><div>Wind energy is an extensively used renewable energy resource. However, its variability and intermittency challenge grid reliability and stability. Grid stability issues caused by ramp events can be mitigated using accurate ramp forecasting methods. In this study, focusing wind farms in Jeju Island, we developed a ramp event forecasting model based on a Light Gradient Boosting Machine (LGBM) and incorporated the output of an ensemble numerical weather prediction (NWP) model to account for prediction uncertainties. Ensemble NWP is a specialized forecasting method that considers the uncertainties inherent in weather prediction. Multiple wind speed scenarios from the ensemble NWP were applied to the wind power forecasting model as input data. The proposed model provided probabilistic ramp event forecasts. To validate the effectiveness of the proposed methodology, the model results were applied to the empirical system of Jeju Island. The results of the model can aid stakeholders in deciding ramp rate control methods, such as storage-system usage, and thus, contributing to the increasing the integration of wind energy.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"66 ","pages":"Article 103936"},"PeriodicalIF":5.4,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Rayleigh-Bénard performance effect on battery cooling using CPCM with novel fin configuration 新型散热片结构CPCM对电池散热性能的影响

IF 5.4 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2025-08-10 DOI: 10.1016/j.tsep.2025.103929

Nilesh Krishnadhari Singh, Rashmi Rekha Sahoo

{"title":"Rayleigh-Bénard performance effect on battery cooling using CPCM with novel fin configuration","authors":"Nilesh Krishnadhari Singh, Rashmi Rekha Sahoo","doi":"10.1016/j.tsep.2025.103929","DOIUrl":"10.1016/j.tsep.2025.103929","url":null,"abstract":"<div><div>Effective thermal management is crucial for lithium-ion batteries to prevent thermal runaway and ensure safe and efficient operation. This study investigates the impact of a novel N-shaped longitudinal fin configuration on the melting behavior and cooling performance of both conventional phase change material (n-octadecane) and nano-enhanced carbon-based PCMs (CPCMs) such as multi-walled carbon nanotubes (MWCNTs), graphene, and carbon fiber (3 % v/v). Using a multi-scale multi-dimensional (MSMD) battery model, the study focuses on developing Rayleigh–Bénard convection cells during the melting process and how these influence heat transfer. The significance of the present study lies in gaining a deep and practical understanding of battery thermal management systems enhanced by innovative fin designs. Initially, PCM/CPCM melting was analyzed without fins to establish a baseline, followed by simulations incorporating the N-shaped fin structure. Results show that adding fins induces vertical convective loops in the liquid PCM/CPCM region, enhancing heat dissipation and shifting the melting front horizontally outward. For carbon-based PCM with fins, a maximum x/δ value of 0.212 was observed at a dimensionless time (St*Fo) of 0.002, while a 246 % increase in δ/(ro–ri) confirmed dominant convection over conduction. Compared to pure PCM, carbon-based PCM with fins achieved a 4.73 % higher heat dissipation at 540 s, and reduced cell temperature by 409 % and 165 % compared to n-octadecane PCM and its finned variant, respectively, at 665 s. The liquid fraction was also 5.02 % higher with fins at St*Fo = 1.20. The findings demonstrate that integrating carbon nanoparticles with optimized fin geometry significantly improves thermal regulation, offering a promising pathway for enhanced battery safety, reliability, and longevity.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"65 ","pages":"Article 103929"},"PeriodicalIF":5.4,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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