International Journal of Heat and Mass Transfer最新文献_第3页

Enhanced indirect liquid cooling for cylindrical Lithium-ion battery module using microtubes and housing system 采用微管和外壳系统的圆柱形锂离子电池模块的间接液体冷却

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-24 DOI: 10.1016/j.ijheatmasstransfer.2025.127588

Mohammad Sadegh Sadeghian , Vahid Esfahanian , Mohammad Akrami , Hosein Shokouhmand , Reza Pasandeh , Erfan Zand , Mohammad Reza Afshar

{"title":"Enhanced indirect liquid cooling for cylindrical Lithium-ion battery module using microtubes and housing system","authors":"Mohammad Sadegh Sadeghian , Vahid Esfahanian , Mohammad Akrami , Hosein Shokouhmand , Reza Pasandeh , Erfan Zand , Mohammad Reza Afshar","doi":"10.1016/j.ijheatmasstransfer.2025.127588","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127588","url":null,"abstract":"<div><div>Effective thermal management is essential for ensuring the safety and performance of lithium-ion batteries (LIBs) in electric vehicles (EVs). This study introduces an innovative liquid-cooled battery thermal management system (BTMS) for 18650-type cylindrical batteries, featuring microtubes (MCTs) embedded in a heat conduction block (HCB) combined with an aluminum housing structure. Through comprehensive numerical analysis, the effects of MCT quantity (2–16), housing thickness (0.5–2.5 mm), coolant mass flow rate (2.8 × 10<sup>-4</sup> kg/s), and tube diameter (0.75–1.75 mm) on thermal performance are investigated. The system demonstrates exceptional cooling capability, maintaining the maximum temperature in the module (<span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>max</mi></mrow></msub></math></span>) below 35°C at 3C discharge with just four MCTs and a low flow rate of 2.8 × 10<sup>-4</sup>     <!-->% while maintaining compactness. This BTMS design outperforms conventional approaches by simultaneously optimizing thermal uniformity, energy efficiency, and manufacturability, offering a practical solution for next-generation EVs.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127588"},"PeriodicalIF":5.8,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155120","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

Interaction between inverted flags: Application in heat transfer enhancement 倒旗间的相互作用：在强化传热中的应用

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-24 DOI: 10.1016/j.ijheatmasstransfer.2025.127868

Sahand Najafpour, Majid Bahrami

{"title":"Interaction between inverted flags: Application in heat transfer enhancement","authors":"Sahand Najafpour, Majid Bahrami","doi":"10.1016/j.ijheatmasstransfer.2025.127868","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127868","url":null,"abstract":"<div><div>This paper investigates the dynamics of inverted flags and their effectiveness in enhancing heat transfer in a tube bank heat exchanger. Fluid-structure interaction and the interaction between two flags in one row lead to fascinating oscillatory behavior. Two inverted flags demonstrate a preferred flapping mode at different air speeds, with occasional switching between in-phase and out-of-phase vibrations. In-phase vibrations are favored at the onset of large-amplitude flapping, but the lock-in behavior weakens as the gap distance increases or the airflow speed rises. In terms of flapping frequency, constructive interference between the flags results in a 9 % enhancement, while out-of-phase flapping reduces the frequency by up to 13.5 %. The application of inverted flags placed in front of tubes in a tube bank was studied experimentally. The strong tip vortices generated by the free ends improve convective heat transfer by approximately 12 % for a single flag and for dual-flag and four-flag systems 20 % and 13 %, respectively. However, heat transfer enhancement diminishes in the fully deflected mode, approaching the performance of a tube bank without flags. Pressure drop measurements show <8 % increases for a single flag and almost 12 % and 16 % for dual-flag and four-flag systems, respectively. The volume goodness factor, assessing the hydrothermal performance of the heat exchanger, shows a 16.6 % improvement for longer flags and 13.7 % for shorter ones.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127868"},"PeriodicalIF":5.8,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118628","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

Effects of diameter ratio between fibers and grains for gas diffusion layer on transport properties via the Shan-Chen method 用Shan-Chen法研究纤维与颗粒直径比对气体扩散层输运特性的影响

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-23 DOI: 10.1016/j.ijheatmasstransfer.2025.127839

Jaeyeon Kim , Muhammad Aziz

{"title":"Effects of diameter ratio between fibers and grains for gas diffusion layer on transport properties via the Shan-Chen method","authors":"Jaeyeon Kim , Muhammad Aziz","doi":"10.1016/j.ijheatmasstransfer.2025.127839","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127839","url":null,"abstract":"<div><div>This study characterizes dual porous layers with fibrous and granular structures with hydrophobic agents, resembling gas diffusion substrate (GDS) and microporous layer (MPL) in polymer electrolyte fuel cell (PEFC). The ratio of characteristic lengths between fiber (GDS) and grain (MPL) diameters was varied from 0.04 to 1.00, creating 150 models that were analyzed in this study. The fiber diameter was fixed at 7.00 µm, yielding grain diameters from 0.31 to 7.00 µm. Effective conduction and diffusion coefficients, absolute permeability, corresponding homogeneity of temperature, concentration, and fluid density distribution were examined in both dry and saturated conditions using the Shan-Chen method based on the lattice Boltzmann equation. Results show that smaller diameter ratios (0.04 and 0.10) lead to decreased permeability and diffusivity at lower saturation (<span><math><mrow><msub><mi>S</mi><mtext>nw</mtext></msub><mrow><mo><</mo><mn>0.7</mn><mo>)</mo></mrow></mrow></math></span>. However, these values converge at higher saturation regardless of the diameter ratio. Due to the fine pore network and hydrophobicity at lower diameter ratios, the homogeneity index (Geary’s coefficient) at highly saturated conditions (<span><math><mrow><msub><mi>S</mi><mtext>nw</mtext></msub><mrow><mo>></mo><mn>0.9</mn><mo>)</mo></mrow></mrow></math></span> was boosted significantly—up to 22.2-fold for permeability and 0.079 from almost 0 (strong clustering) for diffusivity—compared to the coarsest structure (diameter ratio of 1.00). These findings indicate that employing a finer MPL network near reaction sites with catalyst and a coarser network near flow channels may enhance PEFC performance, offering a theoretical basis for designing gas diffusion layers with graded pore or porosity structures.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127839"},"PeriodicalIF":5.8,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118625","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

Axisymmetric numerical simulation of self-propelled three-phase Janus droplets under thermocapillary effects 热毛细效应下自走三相Janus液滴的轴对称数值模拟

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-23 DOI: 10.1016/j.ijheatmasstransfer.2025.127853

Yao Xiao , Liangqi Zhang , Zhong Zeng , Liming Chen , Yujian Wan , Tong Meng

{"title":"Axisymmetric numerical simulation of self-propelled three-phase Janus droplets under thermocapillary effects","authors":"Yao Xiao , Liangqi Zhang , Zhong Zeng , Liming Chen , Yujian Wan , Tong Meng","doi":"10.1016/j.ijheatmasstransfer.2025.127853","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127853","url":null,"abstract":"<div><div>Janus droplets, characterized by their asymmetric internal structure, exhibit unique self-propulsion behaviors due to interfacial phenomena. While extensively studied in binary systems, the thermocapillary-driven dynamics of three-phase Janus droplets remain largely unexplored. In this work, we employ a high-fidelity axisymmetric multiphase flow model based on a thermodynamically consistent phase-field formulation to investigate the self-propelled motion of three-phase Janus droplets under imposed temperature gradients. Our results reveal that the morphology of the Janus droplet significantly alters the surrounding thermal field, reducing the effective temperature gradient along the fluid–fluid interface and thereby modulating the migration velocity. When only one droplet component exhibits temperature-dependent surface tension, the migration velocity decreases monotonically with increasing radius ratio, due to asymmetrical drag and reduced thermocapillary force. In contrast, when thermocapillary forces act on both droplet interfaces, nonlinear coupling between the two hemispheres generates synergistic propulsion, leading to enhanced migration. These findings provide fundamental insights into the interplay between droplet geometry, interfacial tension gradients, and thermal fields in multiphase systems.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127853"},"PeriodicalIF":5.8,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105319","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

Detailed thermal desalination analysis of a falling film on a horizontal tube using a sharp-interface elliptic numerical model 采用尖界面椭圆数值模型对水平管内落膜进行了详细的热脱盐分析

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-23 DOI: 10.1016/j.ijheatmasstransfer.2025.127786

Yasaman Tohidi, Scott J. Ormiston

{"title":"Detailed thermal desalination analysis of a falling film on a horizontal tube using a sharp-interface elliptic numerical model","authors":"Yasaman Tohidi, Scott J. Ormiston","doi":"10.1016/j.ijheatmasstransfer.2025.127786","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127786","url":null,"abstract":"<div><div>An in-house code is utilized to simulate the evaporation from falling films of fresh water and salt water over an isothermal horizontal tube. Full elliptic governing equations for the liquid and gas phases are solved employing a two-dimensional, two-phase model. This modelling represents a significant advancement in the simulation of the evaporation phenomenon that employs innovative methods to precisely determine the location of the liquid and gas interface, the mass transfer in the system, and address the occurrence of the supersaturation phenomenon in the mixture phase. It is also capable of capturing reverse flow and recirculation zones. A sharp interface model is used that determines the evaporation rate using an energy balance at the interface. The accuracy of the model is verified by comparing the present results with relevant experimental and numerical data available in the literature. New numerical results are provided for a parametric study examining how variations in inlet salt mass fraction, inlet pressure, inlet mixture Reynolds number, wall temperature, and inlet liquid mass flow rate affect the falling film development, heat transfer, and evaporation rate around the tube.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127786"},"PeriodicalIF":5.8,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105320","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

Rapid cooling using electrodeposited porous copper material in liquid nitrogen 利用电沉积多孔铜材料在液氮中快速冷却

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-23 DOI: 10.1016/j.ijheatmasstransfer.2025.127814

Yutaro Umehara , Rintaro Sadaishi , Atsuro Etoh , Shoji Mori

{"title":"Rapid cooling using electrodeposited porous copper material in liquid nitrogen","authors":"Yutaro Umehara , Rintaro Sadaishi , Atsuro Etoh , Shoji Mori","doi":"10.1016/j.ijheatmasstransfer.2025.127814","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127814","url":null,"abstract":"<div><div>When cryogenic liquids are used in various fields and applications, e.g., space rockets, freezing food, and superconducting magnets, all of the components that contact the cryogenic liquid should be cooled to below the saturation temperature of the cryogenic liquid. However, the latent heat of the cryogenic liquid is low; thus, the required precooling time is long. A highly efficient cooling method is required to reduce the precooling time. Adding a frost layer to the heat transfer surface is a useful method to rapidly cool an object in a cryogenic liquid. However, with this technique, it is difficult to control the formation of the frost layer at room temperature conditions. This paper proposes an ultra rapid cooling method in cryogenic liquid using a porous copper material made by the electrodeposition method. The proposed method is based on a plating technique that is widely used in industrial fields, thereby making it easy to production of layers with frost layer-like geometry. Experimental results demonstrate that the porous copper material reduced the cooling time by 90 % compared bare surface. In addition, the rapid cooling mechanism was investigated through observations using a high-speed camera. Initially, the early boiling transition on the porous copper surface was confirmed. Following the quenching on the surface of the porous copper material, the local collapse of the film boiling and the recovery of the vapor film were observed to occur repeatedly. Surface analysis results indicate that the cooling enhancement rate is associated with low thermal effusivity and high wickability of the porous copper.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127814"},"PeriodicalIF":5.8,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105314","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

Film hole arrangement criterions along coupled temperature gradient based on the superellipse 基于超椭圆耦合温度梯度的膜孔布置准则

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-23 DOI: 10.1016/j.ijheatmasstransfer.2025.127862

Yuhao Jia, Yongbao Liu, Xing He, Ge Xia

{"title":"Film hole arrangement criterions along coupled temperature gradient based on the superellipse","authors":"Yuhao Jia, Yongbao Liu, Xing He, Ge Xia","doi":"10.1016/j.ijheatmasstransfer.2025.127862","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127862","url":null,"abstract":"<div><div>An optimization criteria for film hole arrangements based on superellipse theory was established. And these criteria was evaluated using conjugate heat transfer computational methods. The temperature field and flow field structure of the endwall was analyzed, and the patterns of enhanced cooling and reduced heat transfer associated with optimized film hole configurations was clarified. This criterion employs superellipse curves to define the temperature gradients between rows of film holes. And according to the distribution of the temperature field, the design of the film hole arrangement is obtained by changing the hyperelliptic parameters. Arranging film holes along a gradually expanding temperature gradient reduces the temperature difference between the upstream and downstream sections of the endwall, diminishes the intensity of channel vortices, and suppresses the cross-migration of cooling jets. And transforms continuous vorticity into discrete vorticity. Informed by superellipse theory, the optimization criterion regulates the distribution of cooling air, resulting in a more uniform cooling film while minimizing shear between the cooling jet and the mainstream, thereby reducing mixing. In terms of momentum, this optimization criteria modifies the near-wall boundary layer, alters disturbances across different regions, and adjusts the distribution of heat transfer coefficients on the endwall surface, ultimately reducing heat transfer. From an energy perspective, it mitigates the interference and mixing of upstream and downstream cooling jets, addresses severe pressure fluctuations within the coolant chamber, and alleviates uneven outflow from film holes, thereby resulting energy losses. Overall, the optimal arrangement criterion provides a methodological basis for solving the problem that the layout design of turbine endwall film holes mainly relies on experience and lacks the guidance of design criteria.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127862"},"PeriodicalIF":5.8,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118626","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 and numerical study of CVD diamond microchannel cooling for high heat flux heterogeneous material-integrated dies 高热流密度非均质材料集成模具CVD金刚石微通道冷却的实验与数值研究

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-22 DOI: 10.1016/j.ijheatmasstransfer.2025.127836

Xinrui Zhang , Linwei Cao , Wei He , Qiang Li , Quanfeng Zhou , Dinghua Hu

{"title":"Experimental and numerical study of CVD diamond microchannel cooling for high heat flux heterogeneous material-integrated dies","authors":"Xinrui Zhang , Linwei Cao , Wei He , Qiang Li , Quanfeng Zhou , Dinghua Hu","doi":"10.1016/j.ijheatmasstransfer.2025.127836","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127836","url":null,"abstract":"<div><div>With the continuous advancement of integrated circuits toward higher integration and power density, thermal management of chips faces significant challenges. This study proposes a heterogeneous material -integrated cooling scheme based on chemical vapor deposition diamond microchannels (CVD-DMCs) and systematically investigates its heat transfer performance under ultra-high heat flux conditions through combined simulation and experimental methods. Initially, a comparative simulation analysis was conducted for different rib structures with rectangular, circular and rhombic cross-sections. The rhombic rib was identified as the optimal configuration, with rib depth (D) and width (W) as key geometric parameters. A non-uniform multi-heat-source test die incorporating dual large-area and multi-point small-area Pt films was fabricated and bonded, via AuSn eutectic bonding, to a femtosecond laser-machined CVD-DMC structure mounted on an AlN substrate, forming a complete test model. Experimental results under extreme conditions of 144 mL/min flow rate, heat fluxes of 1100 W/cm² (dual large-area) and 11000 W/cm² (multi-point small-area) demonstrated that the rhombic rib structure with a D of 0.5 mm, W of 0.15 mm achieved the best cooling performance among the structures investigated in this study. lowering die temperature to 108 °C with a pressure drop (<em>ΔP</em>) of 11.22 kPa. Further analysis indicated that optimizing rib width is more effective than rib depth in enhancing heat transfer while minimizing flow resistance. Moreover, the feasibility and accuracy of integrating multi-point small-area for localized heating and temperature measurement at the chip level were verified. This work reveals the critical influence of CVD-DMCs rib structures on thermal performance and proposes an efficient integrated cooling design for high heat flux electronic devices.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127836"},"PeriodicalIF":5.8,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105317","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

Boundary conditions treatment strategies for black-box objects thermal modeling using thermal response function method 热响应函数法黑盒物体热建模边界条件处理策略

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-22 DOI: 10.1016/j.ijheatmasstransfer.2025.127852

Yongwang Gao , Bin Li , Junming Zhao , Shikui Dong

{"title":"Boundary conditions treatment strategies for black-box objects thermal modeling using thermal response function method","authors":"Yongwang Gao , Bin Li , Junming Zhao , Shikui Dong","doi":"10.1016/j.ijheatmasstransfer.2025.127852","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127852","url":null,"abstract":"<div><div>Thermal modeling of ‘black-box’ objects is extremely challenging due to unknown internal structures and thermophysical properties, and hence all traditional methods fail. The Thermal Response Function Method (TRFM) offers a unique way to address the challenge, predicting the surface temperature field based on a measurable quantity, i.e., thermal response function (TRF), which serves as the essential input thermophysical parameter. In this work, we extend the TRFM to handle arbitrary thermal boundary conditions, including prescribed temperature, convection, radiation, and their combinations, by developing a set of boundary treatment strategies. The proposed method is validated through both benchmark test cases and a realistic in-orbit satellite case involving complex geometry and mixed boundary conditions, confirming the accuracy and general applicability of the proposed approaches. This work completes the theoretical framework of the TRFM and thus makes it a powerful tool for the thermal modeling of objects with unknown internal geometry and physical properties.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127852"},"PeriodicalIF":5.8,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105318","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

Simulation and experimental analysis of overall performance in leaf-vein-inspired channels under rib-truncated configurations 肋截断叶脉启发通道整体性能的仿真与实验分析

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-20 DOI: 10.1016/j.ijheatmasstransfer.2025.127840

Sen Zhang , Haoyan Ren , Haoyan Fang , Yong Zhang , Qingshan Liu

{"title":"Simulation and experimental analysis of overall performance in leaf-vein-inspired channels under rib-truncated configurations","authors":"Sen Zhang , Haoyan Ren , Haoyan Fang , Yong Zhang , Qingshan Liu","doi":"10.1016/j.ijheatmasstransfer.2025.127840","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127840","url":null,"abstract":"<div><div>In order to address the challenge of optimizing both pressure drop and mass transfer performance in the proton exchange membrane fuel cell flow field design, this study introduces an innovative “rib-truncated configuration (RTC)” and applies it to the leaf-vein-inspired channel. By employing three-dimensional computational fluid dynamics (CFD) simulations, the research achieves the simultaneous reduction of pressure drop and enhancement of oxygen concentration in the cathode channel while optimizing the mass transfer pathways. A comprehensive analysis combining simulation and experimental methods is conducted to systematically evaluate the impact of key parameters of the RTC. The results demonstrate that increasing the number of truncated ribs to 7 reduces the pressure drop to 505.7 Pa, increases the current density by 2.87%, and raises the output voltage by 2.27%, effectively alleviating water flooding issues. Furthermore, optimizing the truncation angle of ribs to 27° results in a 0.8% increase in net output power density, thereby achieving the lowest pressure drop and the best water distribution. The combination of an inlet/outlet dimension of 1.0 mm by 1.0 mm and four outlets leads to a 9.5% increase in average current density and an oxygen uniformity index of 0.807, although a significant increase in pressure drop is observed. Experimental tests of the single cell confirms that the relative error in current density at 333.15 K is only 4%. Additionally, CFD simulation results reveal the heterogeneous distribution of oxygen and water within the cell, providing a reliable basis for optimizing channel design.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127840"},"PeriodicalIF":5.8,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105209","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