ASME Journal of Heat and Mass Transfer最新文献_第2页

Integrated Thermal Management System Concept with Combined Jet Plate, High Porosity Aluminum Foam and Target Plate for Enhanced Heat Transfer 采用喷流板、高孔隙率铝泡沫和靶板组合增强热传递的集成热管理系统概念

ASME Journal of Heat and Mass Transfer Pub Date : 2024-05-21 DOI: 10.1115/1.4065575

Youssef Aider, Prashant Singh

{"title":"Integrated Thermal Management System Concept with Combined Jet Plate, High Porosity Aluminum Foam and Target Plate for Enhanced Heat Transfer","authors":"Youssef Aider, Prashant Singh","doi":"10.1115/1.4065575","DOIUrl":"https://doi.org/10.1115/1.4065575","url":null,"abstract":"\u0000 An experimental investigation was carried out on high porosity metal foams subjected to array jet impingement with an objective to develop enhanced heat transfer configurations. In this study, we propose an integrated thermal management system aimed towards leveraging the conjugate heat transfer capabilities of target plate, metal foam, and the jet plate - all made from aluminum and assembled such that a proper contact between them can be established. Steady-state heat transfer experiments were carried out for 10 and 20 pores per inch (PPI) aluminum foams of 0.93 porosity. Both metal foams were 12.7 mm thick. The normalized jet-to-jet spacing was varied from 2 to 12 times the jet diameter, while the jet diameter was fixed. The ratio of the jet plate thickness and jet diameter (nozzle aspect ratio) was 6.35, which ensured proper development of jets inside the nozzles. Experiments were conducted over a wide range of Reynolds number (based on jet diameter) varied from 100 to 5,000. The obtained convective heat transfer coefficient for different configuration was evaluated in context with pressure drop. The analysis of experimental results reveal that large open area ratio jets combined with high porosity metal foams provide highly efficient and high-performance cooling for the investigated range of Reynolds numbers.","PeriodicalId":505153,"journal":{"name":"ASME Journal of Heat and Mass Transfer","volume":"35 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141117037","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

Minimum Air Cooling Requirements for Different Lithium-ion Battery Operating Statuses 不同锂离子电池工作状态下的最低空气冷却要求

ASME Journal of Heat and Mass Transfer Pub Date : 2024-05-20 DOI: 10.1115/1.4065558

Yabo Wang, Xiang Yin, Xueqiang Li, Hailong Li, Shengchun Liu, Xinlin Zhu, Xiaolei Ma

{"title":"Minimum Air Cooling Requirements for Different Lithium-ion Battery Operating Statuses","authors":"Yabo Wang, Xiang Yin, Xueqiang Li, Hailong Li, Shengchun Liu, Xinlin Zhu, Xiaolei Ma","doi":"10.1115/1.4065558","DOIUrl":"https://doi.org/10.1115/1.4065558","url":null,"abstract":"\u0000 Batteries play an important role in increasing the use of renewable energy sources. Owing to the temperature sensitivity of lithium-ion batteries (LIBs), battery thermal management systems (BTMSs) are crucial to ensuring the safe and efficient operation of LIBs. Researchers have mainly focused on evaluating the performance of BTMS; however, little attention has been paid to the minimum cooling requirements of LIBs, which are important for optimizing the design and operation of BTMSs. To bridge this knowledge gap, the aim in this study was to determine the minimum air cooling requirements for different LIBs operating statuses based on computational fluid dynamics simulations. The inlet airflow rate had the strongest influence. For the studied cases, when the battery operates at charge/discharge (C) rate of three or below, the inlet temperature should be set below 35 °C, and the gap between the batteries should be greater than 3 mm to meet the minimum heat dissipation requirement. At a C-rate of 0.5C, natural convection is sufficient to meet the cooling needs, whereas at 1C or higher rates, forced convection is required. Increasing the number of batteries from six to eight has little impact on the inlet flow required to accommodate the battery heat dissipation.","PeriodicalId":505153,"journal":{"name":"ASME Journal of Heat and Mass Transfer","volume":"23 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141119307","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

An Ultrathin-Walled Foam Heat Pipe 超薄壁泡沫热管

ASME Journal of Heat and Mass Transfer Pub Date : 2024-04-18 DOI: 10.1115/1.4065352

Yi Xiang Wang, Cheng Qin Yu, Kiju Kang, M. Atkins, Tongbeum Kim

{"title":"An Ultrathin-Walled Foam Heat Pipe","authors":"Yi Xiang Wang, Cheng Qin Yu, Kiju Kang, M. Atkins, Tongbeum Kim","doi":"10.1115/1.4065352","DOIUrl":"https://doi.org/10.1115/1.4065352","url":null,"abstract":"\u0000 We present an advanced thermal solution for capillary-driven heat pipes that addresses a fundamental problem with existing heat pipes being inefficient space utilization and limited thermal spreading performance. Our solution features the full occupation of open-cell foam core and ultrathin-walled envelope - an ultrathin-walled foam heat pipe (uFHP). A copper layer is formed sequentially via electroless - and electro-plating, and envelopes a tailored block of open-cell foam core, followed by a series of chemical surface treatments that create a nanoscale texture on the foam ligament and envelope's inner surfaces for improved capillary pumping. The high porosity foam core (e = 0.974) for vapor passaging and wicking, and the ultrathin-walled envelope of ~50 µm, make the uFHP remarkably lightweight (64% lighter than commercial heat pipes). Further, conductive spreading and convective transfer of heat from vapor and condensate by foam ligaments to the envelope, increase overall heat rejection. Consequently, the thermal resistance and evaporator temperature are reduced. More importantly, the uFHP could be tailored into any cross-sectional (e.g., non-circular) shape. This tailorable uFHP can be an alternative heat pipe thermal solution for extreme compact operations that require improved thermal performance.","PeriodicalId":505153,"journal":{"name":"ASME Journal of Heat and Mass Transfer","volume":" 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140689113","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

Effects of Leading Edge Shape On Effusion Film Cooling 前缘形状对喷射膜冷却的影响

ASME Journal of Heat and Mass Transfer Pub Date : 2024-04-18 DOI: 10.1115/1.4065348

Yu-Chuan Chang, S. Huang, Chih-Yung Huang, Yao-Hsien Liu

{"title":"Effects of Leading Edge Shape On Effusion Film Cooling","authors":"Yu-Chuan Chang, S. Huang, Chih-Yung Huang, Yao-Hsien Liu","doi":"10.1115/1.4065348","DOIUrl":"https://doi.org/10.1115/1.4065348","url":null,"abstract":"\u0000 This study investigated the effusion film cooling on a turbine leading edge model. The pressure sensitive paint (PSP) technique was employed to analyze the film cooling effectiveness. Three different leading edge profiles were tested, including a semi-cylinder and two elliptical models. Effusion cooling was achieved by employing closely spaced small holes, and Stereolithography was utilized to create the perforated region. The study examined the impact of different blowing ratios (0.4, 0.8, and 1.2), while maintaining a unity density ratio. For benchmark testing purposes, three rows of film cooling holes on these leading edge models were also studied for traditional film cooling scenarios. The film cooling rows consisted of 15 holes positioned at the stagnation line (0°) and ±30° away from it. All test models were placed in a low-speed wind tunnel for experimentation at a Reynolds number of 100,000. Two different streamwise spacings of the effusion holes were examined in this study. The results indicate that effusion cooling was more effective in cooling compared to traditional film cooling methods. When considering the same leading edge shape, the adiabatic cooling effectiveness of effusion cooling was 30-100% higher than that of traditional film cooling. It was observed that increasing the streamwise spacing had a negative impact on the cooling effectiveness, regardless of the leading edge profile being used. Furthermore, variations in blowing ratio did not significantly affect the effectiveness of effusion cooling, and no noticeable blow-off of coolant was observed.","PeriodicalId":505153,"journal":{"name":"ASME Journal of Heat and Mass Transfer","volume":" 27","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140687303","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

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

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

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