International Journal of Thermal Sciences最新文献_第4页

Graphene-modulated surface plasmon resonance thermal absorption for high-precision refractive index sensing 用于高精度折射率传感的石墨烯调制表面等离子体共振热吸收

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-05-20 DOI: 10.1016/j.ijthermalsci.2025.109996

Yongyuan Huang , Bo Wang , Zhengfa Hu , Jinyun Zhou , Wei Zheng

{"title":"Graphene-modulated surface plasmon resonance thermal absorption for high-precision refractive index sensing","authors":"Yongyuan Huang , Bo Wang , Zhengfa Hu , Jinyun Zhou , Wei Zheng","doi":"10.1016/j.ijthermalsci.2025.109996","DOIUrl":"10.1016/j.ijthermalsci.2025.109996","url":null,"abstract":"<div><div>This work presents the graphene-based surface plasmon resonance (SPR) thermal absorption for sensing, combining the SPR with a graphene-layered structure. Within a specific terahertz frequency range. Two thermal absorption peaks are formed by different resonance modes, and the corresponding electric field intensity distributions are analyzed to explain the observed phenomena. The sensor's performance for detecting analytes with varying refractive indices around it is investigated, demonstrating excellent sensing capabilities. The first resonance peak has a sensitivity (S) of 6 THz/RIU, a full-width at half maximum (FWHM) of 0.0146 THz, and a figure of merit (FOM) of 410.96 RIU<sup>−1</sup>. The second resonance peak exhibits a S of 6 THz/RIU, a FWHM of 0.0027 THz, and an FOM of 2222.22 RIU<sup>−1</sup>. The tuning of the sensor's peak position is achieved by adjusting the Fermi level of the graphene. To assess the performance deviations due to manufacturing errors, structural parameters of the sensor are also studied. This sensor demonstrates promising sensing performance and holds great potential for applications in sensing, environmental monitoring, and detection fields.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"215 ","pages":"Article 109996"},"PeriodicalIF":4.9,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089334","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

Ultralow thermal contact resistance for graphene composite films enabled by liquid metal gallium microcapsules 液态金属镓微胶囊实现石墨烯复合薄膜的超低热接触电阻

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-05-19 DOI: 10.1016/j.ijthermalsci.2025.110011

Wenrui Yuan , Hao Zhou , Liyin Feng , Degang Zhao , Ruiqiang Guo

{"title":"Ultralow thermal contact resistance for graphene composite films enabled by liquid metal gallium microcapsules","authors":"Wenrui Yuan , Hao Zhou , Liyin Feng , Degang Zhao , Ruiqiang Guo","doi":"10.1016/j.ijthermalsci.2025.110011","DOIUrl":"10.1016/j.ijthermalsci.2025.110011","url":null,"abstract":"<div><div>Liquid metals exhibit great potential in thermal management but suffer from leakage problems that seriously impact device safety and operation. To alleviate this issue, liquid metal microcapsules (LMMs) with gallium (Ga) as the core and silica as the shell are reported here. The Ga-microcapsules achieve significantly improved heat storage capacity (58.38 J g<sup>−1</sup>) and high thermal durability (only 3.6% decrease in latent heat after 100 thermal cycles), attributed to the reduced supercooling by adding nucleating agents. By coating the microcapsules onto a graphene film, an LMMs/graphene composite film with high thermal performance is prepared, combining the high deformability of liquid metals with the high thermal conductivity of graphene. Compared to the bare graphene film, this composite film with 3.6 wt% microcapsules reduces the operating temperature of LED chips by 4.1 °C because of the largely reduced interfacial thermal resistance. Specifically, the thermal contact resistance between the thermal interface material and heater/heatsink decreases from 16.84 to 1.38 mm<sup>2</sup> K W<sup>−1</sup> under a pressure of 229 kPa, more than one order of magnitude lower than the commercial values. These results demonstrate the remarkable capability of LMMs in enhancing heat transfer, offering a promising approach for efficient heat dissipation in thermal management applications.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"215 ","pages":"Article 110011"},"PeriodicalIF":4.9,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089332","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

Nusselt number predictive model for Taylor–Couette flow with circumferential grooves under different operating parameters 不同工况参数下带周向槽Taylor-Couette流动的Nusselt数预测模型

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-05-19 DOI: 10.1016/j.ijthermalsci.2025.110009

Kun Tang , Bin Yin , Yizhu Yang , Xiyuan Cao , Liang Zhao , Wei Fu , Hui Dong

{"title":"Nusselt number predictive model for Taylor–Couette flow with circumferential grooves under different operating parameters","authors":"Kun Tang , Bin Yin , Yizhu Yang , Xiyuan Cao , Liang Zhao , Wei Fu , Hui Dong","doi":"10.1016/j.ijthermalsci.2025.110009","DOIUrl":"10.1016/j.ijthermalsci.2025.110009","url":null,"abstract":"<div><div>Taylor–Couette flow (TCF) is crucial for rotating machinery in chemical processing, energy systems, and other fields. Previous studies have mainly focused on fluid dynamics characteristics, while the heat transfer mechanism has been insufficiently explored, especially in TCF systems with circumferential grooves. A systematic investigation of the thermal performance with circumferential grooves was conducted through a combination of numerical simulation and machine learning (ML). Key operating parameters (angular velocity, inlet flow rate, and inlet temperature) were selected for a three-factor, five-level experimental design, providing training data for using Polynomial regression, Random forest, and XGBoost models. The comprehensive evaluation results indicate that the Polynomial regression heat transfer predictive model on the test set not only has the highest coefficient of determination (<em>R</em><sup>2</sup> = 99.2 %) but also has the lowest mean absolute error (MAE = 6.5) and root mean square error (RMSE = 8.8), demonstrating strong predictive fidelity. The 95 % confidence intervals of the results were determined based on bootstrap sampling, and nine combinations of features, such as angular velocity, significantly affect heat transfer performance based on the Student's <em>t</em>-test. The findings establish a reliable machine learning framework for optimizing TCF heat exchangers while providing a basis for elucidating coupled thermal fluid phenomena in modified Taylor–Couette systems.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"215 ","pages":"Article 110009"},"PeriodicalIF":4.9,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089333","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

CFD simulation with detailed chemical reaction mechanism of ultra-lean methane explosion at elevated temperatures 超贫甲烷高温爆炸化学反应机理的CFD模拟

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-05-19 DOI: 10.1016/j.ijthermalsci.2025.109977

Jing Luo , Wei Gao , Kai Zhang , Zichao Huang , Haipeng Jiang , Guoliang Li , Songling Jin , Rongjun Si , Guangcai Wen

{"title":"CFD simulation with detailed chemical reaction mechanism of ultra-lean methane explosion at elevated temperatures","authors":"Jing Luo , Wei Gao , Kai Zhang , Zichao Huang , Haipeng Jiang , Guoliang Li , Songling Jin , Rongjun Si , Guangcai Wen","doi":"10.1016/j.ijthermalsci.2025.109977","DOIUrl":"10.1016/j.ijthermalsci.2025.109977","url":null,"abstract":"<div><div>Ventilation air methane (VAM) in coal mines is characterized by ultra-lean, and regenerative thermal oxidation (RTO) represents an effective approach for the utilization of VAM. However, elevated temperatures will vary the reaction kinetics and lower explosion limits (LEL) of methane, and then affect the safety of the utilization process. To address this safety concern, the critical parameters and mechanisms of transition from oxidation to explosion are identified in this study via experiment and CFD simulations. Results indicate that incorporating heat transfer boundary conditions and coupling wall-flame heat exchange in the GRTO-based CFD model results in LEL predictions that closely match experimental data from a custom-built apparatus, with an accuracy of 97.5 %. Furthermore, the CFD model is employed to investigate the mechanism of transition from oxidation to explosion. This study analyzes the heat transfer process between the flame and the wall, and quantitatively evaluates the effect of flame curvature on heat transfer. The coupled effects of temperature and concentration at the LEL are also identified and characterized. The essential parameters and mechanisms of the critical process of methane from oxidation to explosion are associated with the concentrations of free radicals, with ·OH serving as a primary carrier in the explosion process.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"215 ","pages":"Article 109977"},"PeriodicalIF":4.9,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084260","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

Numerical study on the flow and heat transfer in a novel fractal gradient porous material (FGPM) 新型分形梯度多孔材料（FGPM）内部流动与传热的数值研究

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-05-17 DOI: 10.1016/j.ijthermalsci.2025.110001

Xinyu Shi , Xinyi Zhang , Lianlian Xu , Mingxiu Zhan , Xu Xu , Shuxia Qiu , Peng Xu

{"title":"Numerical study on the flow and heat transfer in a novel fractal gradient porous material (FGPM)","authors":"Xinyu Shi , Xinyi Zhang , Lianlian Xu , Mingxiu Zhan , Xu Xu , Shuxia Qiu , Peng Xu","doi":"10.1016/j.ijthermalsci.2025.110001","DOIUrl":"10.1016/j.ijthermalsci.2025.110001","url":null,"abstract":"<div><div>The gradient porous material (GPM) has been widely applied in enhanced heat transfer applications due to its flexibly designable structure, higher thermal conductivity and better stability. Therefore, a rectangular heat sink is designed by using a fractal gradient porous material (FPGM) based on the bionic principle in order to improve its thermal performance. Four porosity gradient-increasing and four porosity gradient-decreasing configurations with the same pore size and average porosity are proposed. And the flow and heat transfer properties of the FGPM are numerically studied by using the Forchheimer-Brinkman extended Darcy equation and local thermal equilibrium model, which has been validated by comparing with experimental data. The results indicate that the FGPM with decreasing porosity gradient along the flow direction has better performance compared with that of uniform porous material (UPM) and porosity gradient-increasing FGPM. A maximum comprehensive performance improvement of 0.7 % is achieved by the FGPM with decreasing porosity gradient at Reynolds number of 730. And it allows for a flexible structural design tailored to different temperature regions within various heat sink systems. The present results provide useful guidelines for enhancing heat transfer performance and improving temperature uniformity of heat sinks.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"215 ","pages":"Article 110001"},"PeriodicalIF":4.9,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070925","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 investigations on the strength, acoustic emission and failure characteristics of thermally cycled flawed granite under biaxial compression 双轴压缩条件下热循环缺陷花岗岩强度、声发射及破坏特性试验研究

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-05-17 DOI: 10.1016/j.ijthermalsci.2025.110012

Bing-Lei Li , Tian Sun , Jian-Zhi Zhang , Yi Long , Liang Fu , Fei Wang

{"title":"Experimental investigations on the strength, acoustic emission and failure characteristics of thermally cycled flawed granite under biaxial compression","authors":"Bing-Lei Li , Tian Sun , Jian-Zhi Zhang , Yi Long , Liang Fu , Fei Wang","doi":"10.1016/j.ijthermalsci.2025.110012","DOIUrl":"10.1016/j.ijthermalsci.2025.110012","url":null,"abstract":"<div><div>In deep underground engineering projects, such as tunnel excavation and geothermal resource development, flawed rock masses frequently experience high-temperature (HT) and high-pressure environments. Understanding how intermediate principal stress (<em>σ</em><sub>2</sub>) affects the mechanical behaviors and failure characteristics of thermally cycled flawed granite is intrinsically crucial. This study explores the correlations among the strength, acoustic emission and failure characteristics in thermally cycled flawed granite under biaxial compression with varying <em>σ</em><sub>2</sub>. Results show that for a given temperature, the rock strength gradually increases as <em>σ</em><sub>2</sub> increases, but the <em>σ</em><sub>2</sub>-dependency of strength approaches a critical state when <em>σ</em><sub>2</sub> attains a threshold. Notably, flawed granite subjected to 600 °C cyclic high temperature (CHT) shows the greatest sensitivity to <em>σ</em><sub>2</sub>. Moreover, CHT and <em>σ</em><sub>2</sub> have a significant impact on the rock energy release efficiency. This study documents the breakage of rock bridges by thermally induced macrocracks at the flaw tips, which link with the pre-existing flaws to collectively dominate the cracking paths and failure mechanisms. Additionally, increased <em>σ</em><sub>2</sub> enhances shear mechanisms under room temperature (RT) and CHT400 °C conditions, while it diminishes shear mechanisms under CHT600 °C conditions.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"215 ","pages":"Article 110012"},"PeriodicalIF":4.9,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072748","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

Inversion of complex refractive index of natural kapok fibers based on BRDF scattering experiments and FDTD-QPSO method 基于BRDF散射实验和FDTD-QPSO方法的天然木棉复折射率反演

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-05-17 DOI: 10.1016/j.ijthermalsci.2025.110010

Zhengwei Tao, Guoliang Chen, Junming Zhao, Jun Qiu

{"title":"Inversion of complex refractive index of natural kapok fibers based on BRDF scattering experiments and FDTD-QPSO method","authors":"Zhengwei Tao, Guoliang Chen, Junming Zhao, Jun Qiu","doi":"10.1016/j.ijthermalsci.2025.110010","DOIUrl":"10.1016/j.ijthermalsci.2025.110010","url":null,"abstract":"<div><div>The systematic research and development of fiber materials in the field of radiative regulation depends on the complex refractive index of the base material. However, there are some problems in the complex refractive index measurement of fiber materials based on ellipsometry, which makes the complex refractive index difficult to obtain and the measurement results may be problematic. Based on the first-principles calculations of electromagnetic scattering, an FDTD-QPSO method is proposed to invert the complex refractive index of the fiber by using the scattering characteristics. In this paper, the inversion of the complex refractive index of hollow fiber is studied and the appropriate inversion error interval is given. The results show that the method has good convergence effect and accuracy in the inversion calculation. Finally, the complex refractive index of natural kapok fiber is retrieved, and the inversion results are analyzed by combining K-K relations and the visible light color of actual kapok fiber. This work improves the complex refractive index inversion model of fiber materials and provides a certain numerical basis for studying the complex refractive index or radiative regulation mechanism of fiber materials.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"215 ","pages":"Article 110010"},"PeriodicalIF":4.9,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070927","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

Enhanced heat transfer study of solid lithium target for BNCT based on Gyroid structure function regulation 基于陀螺结构功能调节的BNCT固体锂靶强化传热研究

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-05-17 DOI: 10.1016/j.ijthermalsci.2025.110000

Kaiwen Qin , Nailiang Zhuang , Chong Shao , Hangbin Zhao , Xiaobin Tang

{"title":"Enhanced heat transfer study of solid lithium target for BNCT based on Gyroid structure function regulation","authors":"Kaiwen Qin , Nailiang Zhuang , Chong Shao , Hangbin Zhao , Xiaobin Tang","doi":"10.1016/j.ijthermalsci.2025.110000","DOIUrl":"10.1016/j.ijthermalsci.2025.110000","url":null,"abstract":"<div><div>Accelerator-driven neutron target stations generate a considerable amount of deposited heat that requiring timely and efficient removal to maintain safe operation. In this study, a Gyroid structure substrate was proposed to improve the heat removal capability of the BNCT neutron target stations, and the “through-hole” factor (<em>α</em>) was introduced to optimize the standard Gyroid structure, aiming to enhance its convective heat transfer performance. The flow and heat transfer characteristics of the improved Gyroid structure was analyzed using numerical simulations and experimental measurements. The results show that as the value of <em>α</em> increases, Gyroid structure peak temperature (<em>T</em><sub>max</sub>) decreases by 4.9–7.4 K, the convective heat transfer coefficient (<em>h</em>) increases by 4.3 %–8.2 %, and the Nusselt number (<em>Nu</em>) increases by 0.7 %–3.5 %. Taking the comprehensive performance evaluation criterion (<em>PEC</em>) as the evaluation index, it is recommended to select <em>α</em> = 2.0 to achieve optimal results. This study provides the theoretical support and technical guidance for the design and development of new neutron target stations.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"215 ","pages":"Article 110000"},"PeriodicalIF":4.9,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070926","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

Overall cooling effectiveness of blade leading edge with double swirl chamber: effect of turbulence intensity and wall thickness 双旋流室叶片前缘整体冷却效果：湍流强度和壁厚的影响

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-05-17 DOI: 10.1016/j.ijthermalsci.2025.110008

Zhi Tao, Boyang Yu, Xuebin Liu, Liming Song, Jun Li

{"title":"Overall cooling effectiveness of blade leading edge with double swirl chamber: effect of turbulence intensity and wall thickness","authors":"Zhi Tao, Boyang Yu, Xuebin Liu, Liming Song, Jun Li","doi":"10.1016/j.ijthermalsci.2025.110008","DOIUrl":"10.1016/j.ijthermalsci.2025.110008","url":null,"abstract":"<div><div>This paper experimentally studied the film cooling characteristics of the leading edge with a double swirl chamber under different crossflow conditions. The experiment matching the Biot number (<em>BI</em>) of actual blades, and the effects of aerodynamic and structural parameters, such as turbulence intensity and leading edge wall thickness, on the overall cooling performance were comprehensively considered. An infrared thermal imager photographed the observed wall temperature, and the leading edge surface's overall cooling effectiveness distribution law was obtained. The results show that the blowing ratio redistribution due to the crossflow in the double swirl chamber dramatically improves the cooling protection under small blowing ratio conditions and avoids the risk of the mainstream backflow at the stagnation line. The Biot number significantly affects the overall cooling performance, and the effect of material thermal conductivity leads to a significant enhancement in the area-averaged overall cooling effectiveness at all conditions. The coolant with a small blowing ratio under crossflow conditions significantly improves the overall cooling performance near the stagnation line under the effect of material thermal conductivity, especially at the large crossflow intensities and low blowing ratio condition, where thermal conductivity cases are elevated by 88.78 % and 191.5 %, respectively, compared with adiabatic case. Under each condition, area-averaged overall cooling effectiveness gradually decreases with the wall thickness increase. The heat transfer of the thick wall in the tangential direction within the solid domain is insufficient, and a clear low overall cooling effectiveness region appears in the contours.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"215 ","pages":"Article 110008"},"PeriodicalIF":4.9,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070928","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

Study on the thermal performance of three-dimensional oscillating heat pipe with super-hydrophobic/super-hydrophilic surface for thermal management application 热管理用超疏/超亲水性三维振荡热管热性能研究

IF 4.9 2区工程技术

International Journal of Thermal Sciences Pub Date : 2025-05-16 DOI: 10.1016/j.ijthermalsci.2025.110007

Kaibao Liu, Haolin Gan, Zeyu Xu, Wenhua He, Yikai Wen, Changhui Liu, Jiateng Zhao

{"title":"Study on the thermal performance of three-dimensional oscillating heat pipe with super-hydrophobic/super-hydrophilic surface for thermal management application","authors":"Kaibao Liu, Haolin Gan, Zeyu Xu, Wenhua He, Yikai Wen, Changhui Liu, Jiateng Zhao","doi":"10.1016/j.ijthermalsci.2025.110007","DOIUrl":"10.1016/j.ijthermalsci.2025.110007","url":null,"abstract":"<div><div>The current trend of miniaturization and integration of power chips poses significant challenges to existing thermal management systems, and traditional cooling methods are not capable of meeting their heat dissipation needs. To enhance the heat dissipation efficiency of chip thermal management systems, a novel three-dimensional oscillating heat pipe (3D-OHP) with a flat structure at the bottom of the evaporation section was designed, which facilitates better contact with the heat source. Additionally, to further enhance the operational performance of the 3D-OHP, this work use chemical etching and self-assembly methods to alter the wettability of the internal surface of the 3D-OHP, examining its start-up and heat transfer performance under both vertical and horizontal installation conditions. The results indicate that regardless of vertical or horizontal installation, the 3D-OHP with super-hydrophilic/super-hydrophobic combination surfaces exhibit the best start-up and heat transfer performance. The start-up temperatures of the 3D-OHP are reduced by 22.29 % and 13.50 %, and the thermal conductivities are improved by 15.33 % and 62.45 % compared to the untreated 3D-OHP. Additionally, under the same heating power and wettability conditions, its performance in vertical installation is superior to that in horizontal installation, indicating that this heat pipe is more suitable for vertical installation. The above research provides valuable insights for scholars seeking to enhance the operational performance of 3D-OHPs by altering the wettability of the inner surface, thereby improving the heat dissipation efficiency of power chip thermal management systems.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"215 ","pages":"Article 110007"},"PeriodicalIF":4.9,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070007","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