Article
Thermodynamics
A. L. Razera, R. J. C. da Fonseca, L. A. Isoldi, E. D. dos Santos, L. A. O. Rocha, C. Biserni
Summary: This study numerically investigates the design of heated semi-elliptical blocks in forced convective channel flows. The Constructal Design method is used to determine restrictions, degrees of freedom, performance indicators, and the search space of solutions. The results demonstrate significant improvements in thermal and fluid dynamic performances between the best and worst shapes at different Reynolds numbers.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Yiwei Fan, Zhaohui Wang, Ting Fu, Huawei Wu
Summary: This study designed a novel (anode, cathode) double-layer tree-like channel cooling plate, optimized the structural parameters, successfully reduced the maximum temperature and standard deviation of surface temperature, improved the heat dissipation performance, and also reduced the pressure drop.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Xinyu Ji, Xiaoping Yang, Yuantong Zhang, Yonghai Zhang, Jinjia Wei
Summary: This article designs and manufactures silicon-based fractal tree-shaped microchannel heat sinks and experimentally studies their heat transfer and pressure drop characteristics. The results show that compared with traditional linear microchannel heat sinks, fractal microchannel heat sinks achieve significant improvements in flow drag reduction and heat transfer enhancement.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Thermodynamics
Jun Gil Song, Jong Hui Lee, Il Seouk Park
Summary: This study proposed a novel heat-pipe-embedded heat sink to address the thermal conductivity issue in high specification electronic equipment used in naval combat systems. Experimental results showed that the new heat sink successfully reduced the maximum temperature of the heat source, leading to space, weight, cost, and energy savings in the combat management system.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Ozgen Acikgoz, Andac Batur Colak, Muhammet Camci, Yakup Karakoyun, Ahmet Selim Dalkilic
Summary: This study predicts heat transfer coefficients in a radiant wall cooling system using a machine learning approach. Experimental data is used to train neural network models, and the accuracy and performance of the predictions are evaluated.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Thermodynamics
F. B. Teixeira, C. Biserni, P. V. Conde, L. A. O. Rocha, L. A. Isoldi, E. D. dos Santos
Summary: The computational study investigated the geometrical characteristics of a triangular array of bluff bodies subjected to incompressible, transient, and forced convective flows. Results showed significant improvements in fluid dynamics and thermal performance when comparing the best and worst shapes.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Chemistry, Analytical
Hang Che, Qingxuan Xu, Guofeng Xu, Xinju Fu, Xudong Wang, Naifeng He, Zhiqiang Zhu
Summary: This study investigates the influencing factors and flow transition in thermal flowmeter measurements. The results show that gravity level, inclination angle, channel height, mass flow rate, and heating power affect the flow rate measurements by influencing flow pattern and temperature distribution. The research has potential implications for the design and manufacture of thermal flowmeters under different working conditions.
Article
Thermodynamics
L. E. Martinez-Alvarado, F. A. Godinez, O. Chavez
Summary: The performance of a fractal geometry blade for cooling hot water by natural convection and evaporation was studied numerically and experimentally. The behavior of the fractal blade was compared with that of a benchmark heat sink that does not include the Sierpinski pattern in its construction. The experimental and numerical results agree well with each other and show a better performance of the reference heat sink when cooling water.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Thermodynamics
Yunfei Yan, Chenghua Zhang, Ying Liu, Ziqiang He, Jiaxun Li
Summary: The study focuses on the adaptive heat dissipation performance of a fractal micro-channel heat sink embedded with hydrogels (GFCY), compared to a micro-channel heat sink without hydrogels. Results show that the GFCY heat sink has a higher temperature decrement and increased cooling capacity, especially at hot spots. The deformation of hydrogels near hot spots enhances coolant flow, improving temperature uniformity and heat dissipation capabilities.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Multidisciplinary Sciences
Abid. A. Memon, M. Asif Memon, Amsalu Fenta
Summary: This article investigates the fluid flow and heat transfer characteristics of a nanofluid in both deep and shallow cavities. The study utilizes the Corcione model to consider various factors such as viscosity, conductivity, nanoparticle size, temperature, and Reynolds number. The simulation is conducted using the Navier-Stokes and energy equations in two dimensions, along with COMSOL 5.6 software. The results show that the temperature distribution in the cavity is circular, with the average temperature decreasing as the volume fraction of copper increases. However, both the Reynolds number and copper volume fraction enhance the average Nusselt number, indicating improved heat transfer along the cavity's middle line. The percentage change in the average Nusselt number decreases with increasing aspect ratio, indicating better conduction.
SCIENTIFIC REPORTS
(2023)
Article
Thermodynamics
Lucas Farias Severo, Flavia Schwarz Franceschini Zinani, Luiz Alberto Oliveira Rocha
Summary: This study applies the Constructal Design Method to investigate a row of circular tubes subjected to cross-flows of visco-plastic Bingham fluids, finding that the dimensionless heat transfer density increases with the Bejan number but decreases with the Bingham number. Additionally, the optimal step distance between tubes decreases with the increase in the Bejan number, but increases with the increase in the Bingham number.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Pingnan Huang, Guanping Dong, Wen Liu
Summary: This paper focuses on the optimization design of laminated-sheet microchannel heat sinks (LS-MHSs) and investigates the effects of different inlet pressures and lamination methods on the optimal design. By comparing the experimental group with the control group, the advantages of the optimized microchannel heat sink in heat transfer performance and comprehensive performance are verified.
APPLIED THERMAL ENGINEERING
(2024)
Article
Energy & Fuels
Yunfei Yan, Ziqiang He, Gange Wu, Fulei Xu, Lixian Li, Li Zhang
Summary: A smart fractal microchannel heat sink integrated with thermo-responsive hydrogels is developed for sensing and adaptive cooling of randomly distributed hotspots in microelectronic devices. The SFMHS shows lower and more uniform temperature distribution under hotspots conditions compared to traditional FMHS, with enhanced adaptive cooling superiority as the hotspots area and heat flux density increase.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Abdel Rahman Elbakheit, Sahl Waheeb, Ahmed Mahmoud
Summary: This paper explores the potential of forced convection cooling in a ducted photovoltaic facade unit. It is found that a fan speed of 4 m/s yielded the highest cooling potential and improved the efficiency of PV cells by 17.53%.
Article
Thermodynamics
Yun-Long Qiu, Wen-Jie Hu, Chang-Ju Wu, Wei-Fang Chen
Summary: This study numerically investigates the interaction between a circular synthetic jet and a cross flow in a microchannel to understand the heat transfer enhancement induced by the circular synthetic jet. The effects of synthetic jet Reynolds number, dimensionless stroke length, and cross-flow Reynolds number are studied. The heat transfer enhancement can be divided into an impinging region with severe heat transfer fluctuation and an entraining region with relatively stable heat transfer performance. The enhancements of the time-area-averaged Nusselt number and the total pressure drop are mainly affected by the synthetic jet Reynolds number, while the transient heat transfer performance is determined by the dimensionless stroke length.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Computer Science, Artificial Intelligence
Ira S. Moskowitz, Paul Cotae, Myong H. Kang, Pedro N. Safier
ADVANCES IN ELECTRICAL AND COMPUTER ENGINEERING
(2011)
Proceedings Paper
Computer Science, Theory & Methods
Pedro N. Safier, Ira S. Moskowitz
COMPLEX ADAPTIVE SYSTEMS
(2014)
Proceedings Paper
Computer Science, Information Systems
Pedro N. Safier, Ira S. Moskowitz, Gerard Allwein
2013 47TH ANNUAL CONFERENCE ON INFORMATION SCIENCES AND SYSTEMS (CISS)
(2013)
Article
Engineering, Electrical & Electronic
Pedro N. Safier, Vasily Dronov, Thomas M. Antonsen, Joe X. Qiu, Bruce G. Danly, Baruch Levush
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2006)
Article
Astronomy & Astrophysics
LW Looney, SY Wang, M Hamidouche, PN Safier, R Klein
ASTROPHYSICAL JOURNAL
(2006)
Article
Physics, Fluids & Plasmas
TM Antonsen, P Safier, DP Chernin, B Levush
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2002)
Article
Engineering, Electrical & Electronic
PN Safier, DK Abe, TM Antonsen, BG Danly, B Levush
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2001)