Article
Engineering, Chemical
Man Wang, Wenqiang Zhang, Gongming Xin, Fei Li, Jin Huan Pu, Mu Du
Summary: This study investigates the thermal and hydraulic characteristics of microchannels with different shapes of ribs through numerical simulation. The results show that different shapes of ribs can enhance heat transfer, and microchannels with hierarchical honeycomb ribs exhibit the highest heat transfer capability.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Thermodynamics
Tingbo Hou, Danmin Xu, Ning Li, Zhengchu Wang
Summary: This study numerically investigated the heat transfer performance of microchannels with round grooves and ribs, and analyzed and compared the results based on the field synergy principle and entropy production. The round-double microchannel exhibited the best heat transfer performance.
EXPERIMENTAL HEAT TRANSFER
(2023)
Article
Thermodynamics
Ali H. Al-Zaidi, Mohamed M. Mahmoud, Tassos G. Karayiannis
Summary: This paper presents an experimental study on flow boiling patterns, heat transfer rates, and pressure drop in multi-microchannels evaporators made of copper and aluminium. The results showed that aluminium heat sinks have comparable thermal performance to that of copper heat sinks.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Multidisciplinary Sciences
Tamanna Alam, Wenming Li, Wei Chang, Fanghao Yang, Jamil Khan, Chen Li
Summary: Flow boiling in silicon nanowires (SiNWs) microchannels can effectively regulate two-phase flow regimes by enhancing explosive boiling, minimizing bubble departure diameter, and smoothing flow regime transition. Experimental investigations and high speed visualizations show that SiNWs reduce intermittent flow regimes, improve rewetting, and maintain thin liquid film at the wall, making it promising for thermal management due to high heat transfer rate and low pressure drop.
SCIENTIFIC REPORTS
(2021)
Article
Thermodynamics
D. D. Ma, Y. X. Tang, G. D. Xia
Summary: The sinusoidal wavy microchannels with secondary channels (SWSC) show better heat removal performance in flow boiling studies compared to conventional microchannels, thanks to increased bubble nucleation induced by enlarged surface area and continuous development of thin liquid film due to the introduction of secondary channels. However, the SWSC microchannels suffer from a higher pressure drop penalty.
APPLIED THERMAL ENGINEERING
(2021)
Article
Engineering, Mechanical
Johnny Adukwu Ebaika, S. Z. Shuja, B. S. Yilbas, H. Al-Qahtani
Summary: Enhanced heat transfer rates in microchannel flow are achieved by introducing rib structures and utilizing nanofluids. The location of ribs and choice of carrier fluid significantly impact the thermal performance of the microchannel. Locating ribs near the channel exit improves Nusselt number and increases pressure drop along the microchannel.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2022)
Review
Energy & Fuels
Hao Yu, Tongling Li, Xiaoxin Zeng, Tianbiao He, Ning Mao
Summary: This paper reviews, classifies, and summarizes the microchannel geometry characteristics of previous studies. It mainly focuses on the impact of microchannel geometry features and structural design on heat transfer and pressure drop, and discusses the future research direction of microchannel geometry design.
Article
Thermodynamics
Qi Zhao, Juncheng Qiu, Jianhong Zhou, Mingxiang Lu, Qiang Li, Xuemei Chen
Summary: This study investigated the effect of wettability on two-phase flow boiling in open microchannels, finding that different wettability properties have varying impacts on heat transfer and pressure drop under different heat flux and mass flow conditions. Microchannels with superhydrophobic properties exhibited the highest pressure drop due to vapor acceleration loss, while those with superhydrophilic properties showed excellent heat transfer performance and rewetting capacity.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Mechanics
Zheng Zhang, Guanmin Zhang, Min Wei, Yi Zhang, Maocheng Tian
Summary: This study investigates two-phase flow and heat transfer in vertical upward rectangular microchannels using the volume of fluid method and the Lee phase-change mass transfer model. The results reveal the sequential occurrence of different flow patterns with increasing heat flux and establish a phase diagram to predict flow pattern transitions. A new correlation for two-phase flow boiling heat transfer in microchannels is proposed.
Article
Thermodynamics
Jingzhi Zhang, Jun An, Li Lei, Xinyu Wang, Gongming Xin, Zan Wu
Summary: This paper numerically studied the subcooled flow boiling in MMC heat sinks. The feasibility of using the Mixture multiphase flow model to simulate the subcooled flow boiling in the MMC heat sink is validated. The results show that the temperature distribution in the MMC heat sink is affected by the microchannel aspect ratio and the Mixture model is suitable for studying flow boiling in complex MMC.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Multidisciplinary
Mohamed H. Ahmed
Summary: This study investigates the heat transfer and pressure drop in a transverse ribbed tube with ribs of unequal heights. The results show that the average Nusselt number increases with increases in the rib height ratio, Prandtl number, and Reynolds number.
APPLIED SCIENCES-BASEL
(2022)
Article
Thermodynamics
Karthikeyan Paramanandam, S. Venkatachalapathy, Balamurugan Srinivasan
Summary: This paper studies the flow and heat transfer characteristics of microchannel heatsinks with ribs, cavities and secondary channels using numerical simulations. The impacts of rib width on heat transfer enhancement and the combined effects of secondary channels, ribs, and cavities on lowering the temperature and enhancing heat transfer rate are analyzed. The research provides insights on the design and performance evaluation of microchannel heatsinks for practical applications.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Mathematics, Interdisciplinary Applications
A. A. Avramenko, I. Shevchuk, A. Tyrinov
Summary: This article presents an analysis of the convective instability of a nanofluid in a vertical porous cylindrical microchannel with slip boundary conditions. It was found that an increase in the porosity of the medium promotes stabilization, while the conditions for the onset of convection are decisively influenced by the thermal conductivity of nanoparticles.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Thermodynamics
Mirae Kim, Heesue Jeong, Ahmad Ali Awais, Seungho Kim, Kyung Chun Kim
Summary: The thermal performance of a metal-foam heat exchanger in cryogenic environments was examined through an experiment and a CFD simulation. The results showed good agreement between the experimental data and CFD predictions, indicating that the metal-foam heat exchanger performed well in low-temperature conditions.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Ali H. Al-Zaidi, Mohamed M. Mahmoud, Tassos G. Karayiannis
Summary: The study experimentally investigated the influence of channel aspect ratio on flow boiling characteristics of HFE-7100 in copper multi-microchannel heat sinks. It found that increasing channel aspect ratio led to higher heat transfer coefficient and lower flow boiling pressure drop, but the heat transfer rate was higher in the heat sink with the smallest aspect ratio due to its larger surface area.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Multidisciplinary
Bo Hou, Byung-Sung Kim, Harrison Ka Hin Lee, Yuljae Cho, Paul Giraud, Mengxia Liu, Jingchao Zhang, Matthew L. Davies, James R. Durrant, Wing Chung Tsoi, Zhe Li, Stoichko D. Dimitrov, Jung Inn Sohn, SeungNam Cha, Jong Min Kim
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Chemistry, Physical
Wenyang Ding, Dan Han, Jingzhi Zhang, Qingming Ma, Xiaoyan Li, Jingchao Zhang, Xinyu Wang
Summary: The study systematically investigates the anisotropic wetting behaviors of water droplets on six surfaces with different solid-liquid interaction intensities using molecular dynamics simulation. Surface energy plays a crucial role in determining the wetting behavior, and under fixed surface energy, the behavior is influenced by the atom potential energy barrier and top area of the solid substrate. Additionally, texture on the surface affects the nucleation and growth of droplets, hindering the reunion of small clusters and reducing the maximum cluster size.
Article
Nanoscience & Nanotechnology
Xinyu Wang, Hongzhao Fan, Dan Han, Yang Hong, Jingchao Zhang
Summary: With the maturing of artificial intelligence, machine learning techniques are increasingly applied in predicting material properties. This study explores the thermal boundary resistance between graphene and pentacene using machine learning, providing guidelines for optimizing model performance.
Article
Thermodynamics
Yang Hong, Dan Han, Bo Hou, Xinyu Wang, Jingchao Zhang
Summary: This study explores the thermal transport properties of multilayer stanene using machine learning and high-throughput computation, finding that cross-plane thermal conductivity is influenced by various factors and can be reduced by weakening coupling strength or strain. By generating a large amount of data and training neural network models, the material's thermal conductivity was successfully predicted.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Review
Chemistry, Physical
Wenxiang Liu, Yang Zhu, Yongqiang Wu, Cen Chen, Yang Hong, Yanan Yue, Jingchao Zhang, Bo Hou
Summary: This review provides a comprehensive summary of recent developments in the field of catalysts, highlighting the importance of molecular dynamics and machine learning approaches. It discusses the influential studies enabled by large-scale simulations, microscopic mechanisms, various catalyst calculation methods, and the potential applications of machine learning in catalyst design and performance prediction.
Article
Engineering, Chemical
Man Wang, Wenqiang Zhang, Gongming Xin, Fei Li, Jin Huan Pu, Mu Du
Summary: This study investigates the thermal and hydraulic characteristics of microchannels with different shapes of ribs through numerical simulation. The results show that different shapes of ribs can enhance heat transfer, and microchannels with hierarchical honeycomb ribs exhibit the highest heat transfer capability.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Wenxiang Liu, Yongqiang Wu, Yang Hong, Zhongtao Zhang, Yanan Yue, Jingchao Zhang
Summary: Machine learning has been extensively applied in computational nanotechnology, enabling efficient calculations, accurate property predictions, and accelerated material discovery. This review provides an overview of recent research progress in these areas, as well as future directions for data-driven research activities.
Article
Chemistry, Physical
Weitao Wang, Chao Yang, Hongzhao Fan, Jingchao Zhang, Xinyu Wang
Summary: The dynamic growth of pentacene thin films on different Au surfaces functionalized with SAMs was studied. It was found that upright crystalline islands emerged on rough SAM surfaces, while disordered crystal structures formed on smooth surfaces. The interaction energies among pentacene molecules and the substrate temperature affected the growth process.
APPLIED SURFACE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Alexandre Bordas, Jingchao Zhang, Juan C. Nino
Summary: This paper presents an end-to-end workflow for measuring grain size in microscopy images without any manual input. By utilizing computer vision techniques, the proposed method achieves efficient and accurate grain size determination.
Article
Energy & Fuels
Dong Yan, Xingwen Lu, Shiyi Zhao, Zuhong Zhang, Mingxia Lu, Jiangtao Feng, Jingchao Zhang, Kate Spencer, Trystan Watson, Meng Li, Bo Hou, Fei Wang, Zhe Li
Summary: Lead halide perovskite solar cells (PSCs) are a promising PV technology that combines high performance with low cost. However, the leaching of lead is a major concern for their large-scale commercialization, and further material optimization is needed to reduce lead leaching.
Article
Chemistry, Multidisciplinary
Bo Hou, Felix Cosmin Mocanu, Yuljae Cho, Jongchul Lim, Jiangtao Feng, Jingchao Zhang, John Hong, Sangyeon Pak, Jong Bae Park, Young-Woo Lee, Juwon Lee, Byung-Sung Kim, Stephen M. Morris, Jung Inn Sohn, SeungNam Cha, Jong Min Kim
Summary: Computational simulations and electron microscopy in this study reveal that nanofaceting can occur during nanocrystal synthesis, leading to curved interfaces and olivelike-shaped nanoparticles.
Article
Chemistry, Physical
Jinzhe Zeng, Duo Zhang, Denghui Lu, Pinghui Mo, Zeyu Li, Yixiao Chen, Marian Rynik, Li'ang Huang, Ziyao Li, Shaochen Shi, Yingze Wang, Haotian Ye, Ping Tuo, Jiabin Yang, Ye Ding, Yifan Li, Davide Tisi, Qiyu Zeng, Han Bao, Yu Xia, Jiameng Huang, Koki Muraoka, Yibo Wang, Junhan Chang, Fengbo Yuan, Sigbjorn Loland Bore, Chun Cai, Yinnian Lin, Bo Wang, Jiayan Xu, Jia-Xin Zhu, Chenxing Luo, Yuzhi Zhang, Rhys E. A. Goodall, Wenshuo Liang, Anurag Kumar Singh, Sikai Yao, Jingchao Zhang, Renata Wentzcovitch, Jiequn Han, Jie Liu, Weile Jia, Darrin M. York, Weinan E, Roberto Car, Linfeng Zhang, Han Wang
Summary: DeePMD-kit is a powerful open-source software package that allows molecular dynamics simulations using Deep Potential (DP) models. It has been widely used in various fields for studying atomistic systems. The latest version of DeePMD-kit offers advanced features, improved usability, and a comprehensive procedure for conducting molecular dynamics. This article provides an overview of the software package, its features, technical details, and benchmarks the accuracy and efficiency of different models.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Wenxiang Liu, Yang Hong, Jingchao Zhang, Yanan Yue
Summary: This study comprehensively investigates the anisotropic thermal conductivity of twisted bilayer graphene (TBLG), revealing a strong non-monotonic correlation between thermal conductivity and twisting angles. The physical mechanism behind the decreasing thermal conductivity with increasing twisting angles is explained. The reported anisotropic thermal conductivity is important for thermal modulation and provides a valuable complement to phonon studies of TBLG.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Wenxiang Liu, Yongqiang Wu, Yang Hong, Bo Hou, Jingchao Zhang, Yanan Yue
Summary: It was found that twisting angles have a periodic effect on the interfacial thermal resistance in bilayer graphene, with the smallest values occurring at angles starting from 0 degrees and the largest values occurring at angles starting from 30 degrees. The phonon density of states and radial distribution functions were calculated to explain the results, and the effects of temperature and tensile strains on thermal resistance were also studied.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Dan Han, Xiaoheng Yang, Mu Du, Gongming Xin, Jingchao Zhang, Xinyu Wang, Lin Cheng
Summary: This study systematically investigates the thermoelectric properties of different WS2-WSe2 phononic crystals using first-principles calculations. It is found that the SL1 monolayer has the highest ZT value, at least twice as high as those of the WS2 and WSe2 monolayers; additionally, the PCH2 structure exhibits the best thermoelectric performance with significantly higher ZT values compared to the SL1 monolayer.
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)
