International Journal of Heat and Mass Transfer最新文献_第10页

Thermal rectification and phonon properties in partially perforated graphene 部分穿孔石墨烯的热整流和声子性质

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI: 10.1016/j.ijheatmasstransfer.2025.127630

Markos Poulos, Konstantinos Termentzidis

{"title":"Thermal rectification and phonon properties in partially perforated graphene","authors":"Markos Poulos, Konstantinos Termentzidis","doi":"10.1016/j.ijheatmasstransfer.2025.127630","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127630","url":null,"abstract":"<div><div>In this work, a thermal rectification ratio <span><math><mi>η</mi></math></span> of 18.5% was observed in partially perforated graphene with the use of Molecular Dynamics (MD) simulations to capture full phonon anharmonicity, exploring systems of up to 500 nm in total length. In all cases studied here, heat preferentially flows from the porous to the pristine region and both the thermal conductivity <span><math><mi>κ</mi></math></span> and <span><math><mi>η</mi></math></span> increase upon increasing the length of the pristine region and upon decreasing the size of the pores. To interpret the results, the macroscopic “R-Series Model” is applied, attributing rectification to the different temperature-dependence of <span><math><mi>κ</mi></math></span> of perforated and pristine graphene. According to the model, <span><math><mi>η</mi></math></span> is maximized when the two regions composing the structure have matching thermal resistances and mismatching temperature-dependence of <span><math><mi>κ</mi></math></span>. The model agrees qualitatively with the MD results, indicating that the latter is the principal rectification mechanism, but it can significantly underestimate <span><math><mi>η</mi></math></span>. Phonon analysis further reveals the appearance of new ‘<em>defect</em>’ modes localized around and between pores, resulting in the emergence of a new prominent peak in the phonon Density of States at 520 cm<sup>−1</sup> and contributing to further reduction of <span><math><mi>κ</mi></math></span>. The study considers key geometric factors such as the length of the pristine region, and the pore size, shape, alignment, and orientation. Pore shape and alignment exert minimal influence on <span><math><mi>η</mi></math></span>, although alignment greatly influences <span><math><mi>κ</mi></math></span>. Eventually, arranged pores are deemed more efficient than randomly distributed defects for increasing rectification.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127630"},"PeriodicalIF":5.8,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997198","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

Corrigendum to “Two-group interfacial area concentration model for dispersed gas-liquid flows in rectangular channels” [IJHMT. 252 (2025), 127443] “矩形通道中分散气液流动的两族界面面积浓度模型”的勘误[j]。252 (2025), 127443]

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI: 10.1016/j.ijheatmasstransfer.2025.127771

Narakhan Khunsrimek , Somboon Rassame , Takashi Hibiki

引用次数: 0

Experimental study on flow and heat transfer characteristics of very-high-temperature helium flow in round tube 高温氦在圆管内流动及传热特性的实验研究

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI: 10.1016/j.ijheatmasstransfer.2025.127784

Changzhong Li , Chenglong Wang , Zicheng Qiu , Zhuofan Li , Suizheng Qiu

{"title":"Experimental study on flow and heat transfer characteristics of very-high-temperature helium flow in round tube","authors":"Changzhong Li , Chenglong Wang , Zicheng Qiu , Zhuofan Li , Suizheng Qiu","doi":"10.1016/j.ijheatmasstransfer.2025.127784","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127784","url":null,"abstract":"<div><div>Helium exhibits excellent flow and heat transfer performances, stable physicochemical characteristics, and high material compatibility, rendering it extensively utilized in advanced industrial applications. Particularly in high-temperature gas-cooled reactors (HTGR), helium can serve both as a coolant for heat removal and as the working fluid in Brayton cycle systems. In Generation IV reactors, such as the very-high-temperature reactor (VHTR), the coolant outlet temperature exceeds 950 °C, reaching over 1000 °C. Therefore, the applicability and accuracy of traditional correlations within this extreme thermal range require evaluation. This study established an experimental system to investigate the flow and heat transfer characteristics of helium under very-high-temperature conditions. The friction factor, as well as the local and average heat transfer coefficients, was measured as helium flowed through a vertically heated round tube. The outlet temperature ranged from 987 °C to 1010 °C, Reynolds numbers varied from 3,797 to 1.15 × 10<sup>4</sup>, and the maximum heat flux is 0.78 MW·m<sup>-2</sup>. In this study, the uncertainties of the friction factor and Nusselt number are lower than 3.39% and 3.61%, respectively. A comparative analysis was conducted between the traditional correlations and experimental data. The results indicate that the Gnielinski correlation predicts the Nusselt number more accurately under very-high-temperature conditions, while both the Blasius and Serghides relations underestimate the friction factor. Based on the experimental data, correlations for flow and heat transfer of helium in round tube under very-high-temperature conditions were derived. The new correlations demonstrate relative deviations within ±5% compared to experimental data, confirming their reliability for engineering applications.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127784"},"PeriodicalIF":5.8,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997127","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 influence of feeding port configurations on the melting and migration of silicon particles in the melt during CCZ monocrystalline silicon growth CCZ单晶硅生长过程中进料口形态对熔体中硅颗粒熔化和迁移的影响

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI: 10.1016/j.ijheatmasstransfer.2025.127789

Haowen Yu , Yu Zhang , Junling Ding , Lijun Liu , Jian Dai

{"title":"The influence of feeding port configurations on the melting and migration of silicon particles in the melt during CCZ monocrystalline silicon growth","authors":"Haowen Yu , Yu Zhang , Junling Ding , Lijun Liu , Jian Dai","doi":"10.1016/j.ijheatmasstransfer.2025.127789","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127789","url":null,"abstract":"<div><div>Based on previously developed LES-DPM model, this study focused on the effects of feeding port configurations on the melting and migration characteristics of silicon particles during continuous Czochralski monocrystalline silicon growth. And the melt temperature distribution, particularly temperature fluctuations in the melt near the crystallization interface were also analyzed. The results show that symmetrical arrangement of multiple feeding ports to disperse the silicon particles can effectively prevent the formation of local low-temperature areas around the feeding ports. However, this arrangement also enlarges the influence area of thermal disturbance near the melt free surface. And excessive dispersion of feeding ports not only fails to significantly shorten particle melting time but also increases the complexity of feeding device. In addition, reducing the distance between feeding port and crucible wall can effectively promote rapid particles melting. Meanwhile, more concentrated particle movement helps improve the uniformity of temperature distribution near the triple point, thereby enhancing the stability of crystal growth. However, this also leads to increased impacts and contacts between silicon particles and crucible wall, shortening the crucible's service life.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127789"},"PeriodicalIF":5.8,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997196","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

Real-time rocket motor internal flow field prediction based on hybrid POD and deep neural networks 基于混合POD和深度神经网络的火箭发动机内部流场实时预测

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI: 10.1016/j.ijheatmasstransfer.2025.127587

Weile Xu , Xingchen Li , Hao Zhu , Qiao Li , Guobiao Cai , Wen Yao

{"title":"Real-time rocket motor internal flow field prediction based on hybrid POD and deep neural networks","authors":"Weile Xu , Xingchen Li , Hao Zhu , Qiao Li , Guobiao Cai , Wen Yao","doi":"10.1016/j.ijheatmasstransfer.2025.127587","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127587","url":null,"abstract":"<div><div>Precise and efficient prediction of rocket motor internal flow fields is imperative for enabling robust performance monitoring and intelligent flow control. Emerging deep learning (DL) surrogate models can facilitate real-time prediction of flow fields, while they usually confront ill-posed challenges arising from the intrinsic imbalance between sparse input features and high-dimensional output spaces, thereby compromising the generalization capacity in practical flow field prediction scenarios. The paper proposes a hybrid DL framework enhanced by proper orthogonal decomposition (POD) for real-time prediction of rocket motor internal flow fields utilizing low-dimensional input conditions. The framework employs POD to extract the implicit characteristics of the original flow field and an improved self-attention deep neural network (SA-DNN) for nonlinear regression from input parameters to modal coefficients. Numerical simulation datasets based on a hybrid rocket motor are established to evaluate the performance of various DL prediction models. A series of experiments represent that POD reduces the difficulty and consumption of DL modeling, and also provides additional physical constraints for DNN construction. The introduction of SA module and multi-loss function further enhances the performance. Compared with standard DNN, the proposed method improves the accuracy and efficiency by 22.0 % and 52.8 % respectively, and the predicted fields are more consistent with the computational fluid dynamics results. It also demonstrates obvious improvements in data scarcity and working condition extrapolation tasks. It can be concluded that POD+SA-DNN will be a promising method to predict high-dimensional rocket motor flow fields, providing strong support for intelligent applications of rocket propulsion systems.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127587"},"PeriodicalIF":5.8,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997194","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

Liquid supersaturation in evaporating vertical falling films — A direct numerical simulation study 蒸发垂直降膜中的液体过饱和。直接数值模拟研究

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI: 10.1016/j.ijheatmasstransfer.2025.127760

D. Vleeschhouwers , N. Hidman , A. Åkesjö , H. Ström , S. Sasic

{"title":"Liquid supersaturation in evaporating vertical falling films — A direct numerical simulation study","authors":"D. Vleeschhouwers , N. Hidman , A. Åkesjö , H. Ström , S. Sasic","doi":"10.1016/j.ijheatmasstransfer.2025.127760","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127760","url":null,"abstract":"<div><div>Industrial fluids in heat exchanger applications frequently experience supersaturation, which can lead to crystallization and fouling on heat transfer surfaces, reducing system efficiency and performance. In this study, we investigate the roles of inverse salt solubility and interfacial evaporation, hypothesized to be the key mechanisms driving liquid supersaturation in evaporating vertical falling films. To identify where supersaturation first emerges and to elucidate the mechanisms behind its spatial distribution, a two-phase Direct Numerical Simulation (DNS) framework is developed that fully resolves hydrodynamics and heat transfer using a Volume of Fluid (VOF) approach. The gas–liquid interface is geometrically reconstructed to ensure accurate volume fraction and scalar flux calculations, with interfacial transport restricted to the liquid phase using a weighted scheme that avoids unphysical diffusion across the interface. A spatial segmentation method using periodic boundary conditions enables the simulation of an industrially relevant pipe length of <span><math><mrow><mn>10</mn><mspace></mspace><mi>m</mi></mrow></math></span> within a compact computational domain. The framework is validated against prior numerical studies, experimental data, and analytical solutions, confirming its ability to capture the coupled hydrodynamic, heat, and mass transfer processes in the film. The results show that interfacial evaporation initiates supersaturation through solute enrichment near the gas–liquid interface, while flow separation and recirculation enhance supersaturation within the film. Supersaturation dynamics are strongly influenced by the Reynolds number (closely related to the wetting rate), with higher values leading to chaotic solute redistribution. Notably, supersaturation is consistently more pronounced near the bottom region of the evaporator, indicating a higher risk of crystallization fouling in this area.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127760"},"PeriodicalIF":5.8,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145003592","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

Influence of local perforations on heat transfer enhancement in inclined rib turbulators 斜肋紊流中局部穿孔对强化传热的影响

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI: 10.1016/j.ijheatmasstransfer.2025.127785

Dosang Lee , Hyung Ju Lee , Hyoungsoon Lee , Seong Hyuk Lee

{"title":"Influence of local perforations on heat transfer enhancement in inclined rib turbulators","authors":"Dosang Lee , Hyung Ju Lee , Hyoungsoon Lee , Seong Hyuk Lee","doi":"10.1016/j.ijheatmasstransfer.2025.127785","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127785","url":null,"abstract":"<div><div>The present study numerically investigates the influence of tailored local perforations on swirling flows and their influence on heat transfer enhancement in the rib turbulators. Numerical simulations are conducted for various rib inclination angles and perforation positions. The results indicate that ribs inclined at 60° and 30° increase the normalized Nusselt number by approximately 23.2 % and 17.0 %, respectively, and improve the overall thermal performance factor by 11.9 % and 24.5 %, compared to conventional 90° inclined ribs. To further enhance heat transfer performance, ten perforations are applied in parallel with the flow direction at one end of each inclined rib, targeting the local swirling flow. These perforated configurations enhance turbulent mixing and strengthen the vortex structures, improving heat transfer over the bottom surface. For the 60° and 30° inclined ribs, the local perforations increase the normalized Nusselt number by 5.1 % and 4.4 %, respectively, while reducing the normalized friction loss by 1.5 % and 5.7 %, resulting in overall thermal performance improvements of 5.6 % and 6.5 %. In contrast, when perforations are applied at both ends of the 30° inclined ribs, the secondary flow is disrupted, leading to a localized reduction in heat transfer. This configuration yields an approximately 9.2 % lower overall thermal performance factor than the case with ten perforations positioned only at the left end of the 30° inclined ribs.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127785"},"PeriodicalIF":5.8,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997083","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

Transient experiments on an air-to-refrigerant pumped crossflow evaporator under air temperature perturbations for data center applications 数据中心温度扰动下空气-制冷剂泵送横流蒸发器的瞬态实验

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI: 10.1016/j.ijheatmasstransfer.2025.127750

Carol Caceres, Mehdi Mehrabi, Gerard F. Jones, Alfonso Ortega

{"title":"Transient experiments on an air-to-refrigerant pumped crossflow evaporator under air temperature perturbations for data center applications","authors":"Carol Caceres, Mehdi Mehrabi, Gerard F. Jones, Alfonso Ortega","doi":"10.1016/j.ijheatmasstransfer.2025.127750","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127750","url":null,"abstract":"<div><div>Crossflow heat exchangers are used widely in different applications, such as air conditioning systems, data centers, and the automobile industry. In data centers, crossflow heat exchangers are present in applications known as close-coupled hybrid cooling systems. These technologies are installed in the proximity of data center racks. As rack power density has increased over the years, these systems have transitioned from using chilled water to two-phase refrigerant cooling to dissipate the higher level of generated heat. Existing literature provides abundant data on crossflow heat exchangers in single-phase flow. However, data from experiments in which one of the working fluids is a refrigerant undergoing phase change are either unavailable or lack detail. The current work presents detailed data from both single- and two-phase flow experiments in an air-to-refrigerant crossflow heat exchanger with transient changes in the air temperature. A novel technique to generate air temperature perturbations is described, which resembles scenarios in which computing demand changes over time. Experiments were performed utilizing refrigerant (R134a) as a working fluid to analyze systems with and without subcooling control. The crossflow heat exchanger exhibits different behavior under subcooled control during the boiling process in a pumped refrigerant system. In situations where the inlet pressure is not controlled, the level of subcooling can fluctuate by up to 3 °C. To evaluate the heat exchanger’s response, both the inlet and outlet temperatures, as well as the pressure, are measured. Actively controlling the subcooling demonstrates pressure variations in the dynamic behavior of the heat exchanger, in addition to influencing the sensible heat.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127750"},"PeriodicalIF":5.8,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997078","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

Unraveling concentration gradient-driven ion transport in nanopores with classical Nernst–Planck equation 用经典的能斯特-普朗克方程揭示纳米孔中浓度梯度驱动的离子输运

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI: 10.1016/j.ijheatmasstransfer.2025.127753

Qiyuan Wang , Dong Wei , Zhixiang Zhao , Chengzhen Sun

{"title":"Unraveling concentration gradient-driven ion transport in nanopores with classical Nernst–Planck equation","authors":"Qiyuan Wang , Dong Wei , Zhixiang Zhao , Chengzhen Sun","doi":"10.1016/j.ijheatmasstransfer.2025.127753","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127753","url":null,"abstract":"<div><div>The diffusion of ions in nanopores plays a pivotal role in numerous industrial applications, including water desalination, energy conversion, and biological systems. However, when the diameter of the nanopore approaches to that of the ion’s hydration shell, the uncertainty associated with the diffusion coefficient of ions in nanopores leads to deviations in the prediction of diffusion flux from classical Nernst–Planck (N–P) equation. In this study, we employ molecular dynamics simulations to investigate the concentration-driven migration of ions in nanopores. Our findings indicate that the N–P equation retains its predictive accuracy for ion permeability when the nanopore diffusion coefficient is accurately determined. In order to accurately calculate the diffusion coefficient within nanopores, we propose a novel method by selectively analyzing ions transport within regions adjacent to both sides of the nanopore, enabling accurate calculation of the ion diffusion coefficient along the direction of concentration gradients. This research enhances our comprehension of ion transport phenomena in nanoscale and boosts the related theoretical modeling.</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127753"},"PeriodicalIF":5.8,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997079","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 investigation of heat-mass transfer characteristics of LiCl solution droplet in frost-prone ambient air 易结霜环境空气中LiCl溶液液滴传热传质特性的数值研究

IF 5.8 2区工程技术

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI: 10.1016/j.ijheatmasstransfer.2025.127787

Shuaijie Ding , Yi Zhang , Zheng Zhang , Guanmin Zhang , Maocheng Tian

{"title":"Numerical investigation of heat-mass transfer characteristics of LiCl solution droplet in frost-prone ambient air","authors":"Shuaijie Ding , Yi Zhang , Zheng Zhang , Guanmin Zhang , Maocheng Tian","doi":"10.1016/j.ijheatmasstransfer.2025.127787","DOIUrl":"10.1016/j.ijheatmasstransfer.2025.127787","url":null,"abstract":"<div><div>Optimizing the structure and operating mode of the heat source tower to enhance its heat transfer performance is beneficial for it to play a greater role in clean heating engineering. In this study, firstly, an improved closed-type heat source tower using a spray zone to replace the fin-tube heat exchanger in the traditional structure was proposed; next, a modified numerical model for the heat and mass transfer between anti-frost droplet and moist air in the improved structure was established; then, the heat and mass transfer mechanism between anti-frost droplet and moist air and the effects of moist air velocity and initial droplet diameter were studied. The results show that the convection effect and diffusion effect jointly dominate the mass transfer between the anti-frost droplet and moist air, and more than 90% of mass transfer resistance is concentrated on gas side; interfacial shear stress affects the mass transfer coefficient by thinning the concentration boundary layer on windward side of anti-frost droplet and influencing the quantity and intensity of vortices inside droplet; the mass transfer rates on both the windward and leeward sides of anti-frost droplet are promoted by interfacial shear stress, and the mass transfer rate on the leeward side of droplet is also enhanced by the returning moist air; when the moist air velocity is 0.2 m/s, the average mass transfer coefficient exhibits a quadratic functional relationship with time, however, as the moist air velocity and droplet diameter increase, the relationship between them gradually approaches linearity; finally, based on the research results, a <em>Sh</em> calculation model incorporating the effect of interfacial shear stress was established (<em>R</em><sup>2</sup> = 0.99947).</div></div>","PeriodicalId":336,"journal":{"name":"International Journal of Heat and Mass Transfer","volume":"255 ","pages":"Article 127787"},"PeriodicalIF":5.8,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997084","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