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

Extended Neumann's Solution Accounting for Rayleigh-Bénard convection in the Melt Layer of a Phase Change Material 考虑相变材料熔融层中瑞利-贝纳德对流的扩展诺依曼解法

ASME Journal of Heat and Mass Transfer Pub Date : 2024-04-18 DOI: 10.1115/1.4065351

Haochen Sun, M. Atkins, Kiju Kang, Tian Jian Lu, Tongbeum Kim

引用次数: 0

Optimization of Discrete Film Hole Arrangement On a Turbine Endwall with Middle Passage Gap 带中间通道间隙的涡轮机端壁上离散膜孔布置的优化

ASME Journal of Heat and Mass Transfer Pub Date : 2024-04-18 DOI: 10.1115/1.4065347

Weixin Zhang, Zhao Liu, Yu Song, Yixuan Lu, Zhenping Feng

{"title":"Optimization of Discrete Film Hole Arrangement On a Turbine Endwall with Middle Passage Gap","authors":"Weixin Zhang, Zhao Liu, Yu Song, Yixuan Lu, Zhenping Feng","doi":"10.1115/1.4065347","DOIUrl":"https://doi.org/10.1115/1.4065347","url":null,"abstract":"\u0000 For the design of modern gas turbine, cooling sources such as middle passage gap leakage flow, upstream slot leakage flow and discrete film holes are designed to protect the blade. This research included middle passage gap leakage flow and two shapes of film holes (cylindrical holes and fan-shaped holes). Firstly, experiment was carried out to verify the turbulence model at an inlet mainstream Reynolds number of 340,000, blowing ratio (M) of 1.0, and middle passage gap leakage mass flow ratio of 0.5%. Then, the circumferential positions of the endwall discrete film holes were optimized, and 100 samples were generated through Latin hypercube sampling (LHS) method, among which 80 samples were selected as the training data and 20 samples were selected as the verification set of radial basis function (RBF) neural network. Then particle swarm optimization (PSO) algorithm was adopted for the optimization. Finally, the flow structure, adiabatic film cooling effectiveness and aerodynamic losses of four surrogate models were analyzed to achieve the most effective film hole arrangement on endwall. The results draw a conclusion that compared with the baseline and the best sample model, the area-averaged film cooling effectiveness of the endwall for most effective case increased by 188% and 9.6% respectively. The area-averaged aerodynamic loss along the blade height at the endwall outlet decreased by 1.7% and 0.96%. Besides, the staggered arrangement of film holes is conducive to film cooling performance.","PeriodicalId":505153,"journal":{"name":"ASME Journal of Heat and Mass Transfer","volume":" 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140689189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Study On Melting and Solidification Cycle of a Hybrid Pin Fin/metal Foam Energy Storage Tank 针翅/金属泡沫混合储能罐的熔化和凝固循环实验研究

ASME Journal of Heat and Mass Transfer Pub Date : 2024-04-18 DOI: 10.1115/1.4065349

Z. Du, Xinyu Huang, Yuanji Li, Gang Liu, Xiaohua Yang, Bengt Sundén

{"title":"Experimental Study On Melting and Solidification Cycle of a Hybrid Pin Fin/metal Foam Energy Storage Tank","authors":"Z. Du, Xinyu Huang, Yuanji Li, Gang Liu, Xiaohua Yang, Bengt Sundén","doi":"10.1115/1.4065349","DOIUrl":"https://doi.org/10.1115/1.4065349","url":null,"abstract":"\u0000 Phase change heat storage offers a practical solution to address the instability and intermittency of solar energy. While the thermal conductivity of heat storage medium (phase change material) is low hinders its large-scale application. Metal foam and fins have proven effective in enhancing heat transfer performance. This study establishes a visual phase change heat storage experimental platform to compare the heat storage and release performances of four different structures: pure paraffin, fins, metal foam, and fin-metal foam, throughout complete melting-solidification cycle. Experimental snapshots and real-time data acquisition are utilized to obtain phase interface changes and internal temperature variations at different time intervals, enabling a quantitative comparison of melting and solidification time and corresponding temperature responses. The findings reveal that both fins and metal foam effectively improve melting and solidification performance, with fins exhibiting more pronounced temperature responses, while metal foam demonstrates enhanced temperature uniformity. The comprehensive utilization of the fin-foam metal structure demonstrates the best heat storage/release performance. Compared to the pure PCM structure, heat storage and release time are reduced by 61.61% and 82.01%, respectively, while the average temperature response during the heat storage and release process improves by 122.41% and 429.75%.","PeriodicalId":505153,"journal":{"name":"ASME Journal of Heat and Mass Transfer","volume":" 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140686703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum On: Adaptive Computations to Pressure Profile for Creeping Flow of a Non-newtonian Fluid with Fluid Non-constant Density Effects, Asme Journal of Heat Transfer (2022), 144(10):103601 Erratum On：非牛顿流体蠕变流的压力曲线自适应计算与流体非恒定密度效应，《Asme 传热学报》（2022 年），144（10）：103601

ASME Journal of Heat and Mass Transfer Pub Date : 2024-04-06 DOI: 10.1115/1.4063963

Mohamed Ibrahim

引用次数: 0

Heat Transfer Analysis of Memory Dependent Derivative in Biological Tissue Subjected to a Moving Heat Source 受移动热源影响的生物组织中记忆相关衍生物的传热分析

ASME Journal of Heat and Mass Transfer Pub Date : 2024-03-26 DOI: 10.1115/1.4065169

Xiaoya Li, Dan Wang

引用次数: 0

Ai-based Thermal Imaging for Breast Tumor Location and Size Estimation Using Thermal Impedance 基于 Ai 的热成像技术利用热阻抗估算乳腺肿瘤的位置和大小

ASME Journal of Heat and Mass Transfer Pub Date : 2024-03-26 DOI: 10.1115/1.4065190

Jefferson Gomes Nascimento, G. L. Menegaz, Gilmar Gilmar Guimarães

{"title":"Ai-based Thermal Imaging for Breast Tumor Location and Size Estimation Using Thermal Impedance","authors":"Jefferson Gomes Nascimento, G. L. Menegaz, Gilmar Gilmar Guimarães","doi":"10.1115/1.4065190","DOIUrl":"https://doi.org/10.1115/1.4065190","url":null,"abstract":"\u0000 Breast cancer has the highest incidence and mortality in women worldwide. Early and accurate detection of the disease is crucial for reducing mortality rates. Tumours can be detected from a temperature gradient due to high vascularization and increased metabolic activity of cancer cells. Thermal infrared images have been recognized as potential alternatives to detect these tumours. However, various pathological processes can produce significant and unpredictable changes in body temperature. These limitations suggest thermal imaging should be used as an adjuvant examination, not a diagnostic test. Another limitation is the low sensitivity to tiny and deep tumours, often found in the analysis of surface temperatures using thermal images. Even the use of artificial intelligence directly on these images has failed to accurately locate and detect the tumour size due to the low sensitivity of temperatures and position within the breast. Thus, we aimed to develop techniques based on applying the thermal impedance method and artificial intelligence to determine the origin of the heat source (abnormal cancer metabolism) and its size. The low sensitivity to tiny and deep tumours is circumvented by utilizing the concept of thermal impedance and artificial intelligence techniques. We describe the development of a thermal model and the creation of a database based on its solution. We also outline the choice of detectable parameters in the thermal image, deep learning libraries, and network training using convolutional neural networks. Lastly, we present tumour location and size estimates based on thermographic images obtained from simulated thermal models of a breast.","PeriodicalId":505153,"journal":{"name":"ASME Journal of Heat and Mass Transfer","volume":"118 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140380105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of Manifold Microchannel Heat Sink Based On Design of Experiment Method 基于实验设计方法的歧管式微通道散热器优化

ASME Journal of Heat and Mass Transfer Pub Date : 2024-03-26 DOI: 10.1115/1.4065171

Xingguo Wei, Yu Feng, Taisen Yan, Wansheng Li, Qinghang Lv, Jiang Qin

{"title":"Optimization of Manifold Microchannel Heat Sink Based On Design of Experiment Method","authors":"Xingguo Wei, Yu Feng, Taisen Yan, Wansheng Li, Qinghang Lv, Jiang Qin","doi":"10.1115/1.4065171","DOIUrl":"https://doi.org/10.1115/1.4065171","url":null,"abstract":"\u0000 The manifold microchannel heat sink (MMC) shows high potential to cope with the rapidly increasing power density of the electronic devices. It is of significance to search for an optimization method to comprehensively consider multi-parameters effects on the performance of microchannel. Here, we have studied the temperature and flow characteristics of the manifold microchannel heat sink (MMC) via experimental method. Then, the effect of geometric parameters including microchannel aspect ratio (α), hydraulic diameter (Dh), and manifold block numbers (Nm) on the performance of a manifold microchannel heat sink (MMC) were studied by numerical method. Subsequently, the design of experiment (DOE) method was proposed to optimize the geometric parameters of the MMC. The relation of friction coefficient and heat transfer coefficient with respect to the three geometric parameters were gained by the mathematical regression model. The statistical optimized manifold microchannel achieve 10% reduced in temperature rise, 59.9% enhanced in the heat transfer coefficient, and the comprehensive quality factor of 1.6. Our work shows a novel method to consider the effect of structure parameters on the performance of the manifold microchannel and provides a novel optimization design method for the manifold microchannel.","PeriodicalId":505153,"journal":{"name":"ASME Journal of Heat and Mass Transfer","volume":"89 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140377843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sensitivity Analysis and Optimization of Heat Transfer Performance of Ultra-thin Vapor Chamber with Composite Wick 带复合吸芯的超薄蒸发室传热性能的敏感性分析与优化

ASME Journal of Heat and Mass Transfer Pub Date : 2024-03-26 DOI: 10.1115/1.4065170

Zhaohui Huang, Rui Li, Y. Gan

{"title":"Sensitivity Analysis and Optimization of Heat Transfer Performance of Ultra-thin Vapor Chamber with Composite Wick","authors":"Zhaohui Huang, Rui Li, Y. Gan","doi":"10.1115/1.4065170","DOIUrl":"https://doi.org/10.1115/1.4065170","url":null,"abstract":"\u0000 An ultra-thin vapor chamber (VC) with the composite wick formed by four spiral woven meshes (SWMs) and a copper mesh was proposed to solve the heat dissipation problem in miniaturized electronic equipment because of its sufficient heat transfer capability under limited thickness. However, the influence factors on the thermal performance of the VC with composite wick are more than that of the VC with a single type of wick. In this study, a theoretical model for calculating the maximum heat transfer capacity of VC with composite wick and a three-dimensional numerical model for the heat transfer characteristics of VC are established, and the simulation results are in good agreement with the experimental results. The orthogonal test method was used to determine that both the width of the vapor channel (wv) and the thickness of the vapor channel (tv) have a significant effect on the maximum heat transfer capacity and thermal resistance, while the porosity of the mesh (εmesh) has a prominent effect on the maximum heat transfer capacity, but has little effect on the thermal resistance. Further optimization of the sensitive factors for VC heat transfer performance was achieved to improve the maximum heat transfer capacity of the ultra-thin VC.","PeriodicalId":505153,"journal":{"name":"ASME Journal of Heat and Mass Transfer","volume":"119 48","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140381206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Lifetime of Path-breaking Scholarship That Spans Gas-Turbine Cooling to Transport Processes and Critical Diagnostic Tools for Convective Heat Transfer and More 终生致力于突破性研究，涵盖燃气轮机冷却、传输过程、对流换热的关键诊断工具等领域

ASME Journal of Heat and Mass Transfer Pub Date : 2024-03-23 DOI: 10.1115/1.4065156

R. M. Manglik, Sandra Boetcher, Terrence Simon, Umesh Madanan

引用次数: 0

Rotating Flow and Heat Transfer Characteristics of a Novel Cooling Channel for Gas Turbine Blade Trailing Edge with Diamond-Type Tpms Structures 采用钻石型 Tpms 结构的新型燃气轮机叶片后缘冷却通道的旋转流和传热特性

ASME Journal of Heat and Mass Transfer Pub Date : 2024-03-23 DOI: 10.1115/1.4065157

K. Yeranee, Chao Xu, Yu Rao, Jianian Chen, Yueliang Zhang

{"title":"Rotating Flow and Heat Transfer Characteristics of a Novel Cooling Channel for Gas Turbine Blade Trailing Edge with Diamond-Type Tpms Structures","authors":"K. Yeranee, Chao Xu, Yu Rao, Jianian Chen, Yueliang Zhang","doi":"10.1115/1.4065157","DOIUrl":"https://doi.org/10.1115/1.4065157","url":null,"abstract":"\u0000 This work designs a Diamond-type triply periodic minimal surface (TPMS) structure that exhibits excellent thermomechanical properties in a gas turbine blade trailing edge to enhance thermal performance and improve heat transfer uniformity. Since the velocity and temperature distributions are altered in the rotating trailing edge channel, the flow and heat transfer characteristics of the baseline pin fin and Diamond TPMS models are numerically investigated at the Reynolds number of 10,000 and the rotation numbers of 0.0-0.28. Compared to the baseline model, the Diamond TPMS network significantly decreases recirculation flow at the inner wall, improving heat transfer, especially at the tip and outlet regions. Although the Diamond TPMS model incurs substantial pressure losses from 191% to 234%, it yields significantly higher overall heat transfer than the pin fins by 179%. Consequently, the thermal performance is increased by 93.4%. The flow fluctuations due to the rotating effects are minor in the Diamond TPMS architecture, considerably reducing the differences in heat transfer between the leading and trailing walls. The differences in the wetted-area averaged Nusselt number of the baseline and Diamond TPMS models within the studied rotation numbers are 8.5-14.4% and 9-8.3%, respectively. Moreover, the Diamond TPMS structure reduces the differences in heat transfer between the root and tip regions at the outlet by up to 80% compared to the pin fins. This improvement helps protect the trailing edge from thermal failure, thereby potentially prolonging the gas turbine blade's lifetime.","PeriodicalId":505153,"journal":{"name":"ASME Journal of Heat and Mass Transfer","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140210698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0