Article
Physics, Multidisciplinary
Hongwei Zhu, Lingen Chen, Yanlin Ge, Shuangshuang Shi, Huijun Feng
Summary: This study performs multi-objective constructal design based on the quadrilateral heat generation body (HGB) proposed by previous literature. Firstly, the optimal constructal is obtained by minimizing a complex function composed of maximum temperature difference (MTD) and entropy generation rate (EGR), and the influence of weighting coefficient on the optimal constructal is studied. Then, multi-objective optimization is performed with MTD and EGR as optimization objectives, and the Pareto frontier with optimal solution set is obtained. The deviation index of TOPSIS decision method is the lowest among the discussed methods.
Article
Chemistry, Physical
Xingfei Wei, Rigoberto Hernandez
Summary: Human brains use tree-like neuron networks for efficient and low-energy information processing. Similarly, tree structures have been engineered to enhance mass and heat transfer. In this study, atomistic simulations were used to reveal the heat transfer mechanism in tree-structured polymer linked gold nanoparticle networks. The results showed that heat conductance increases with an increasing polymer tree level, and this enhancement is attributed to the increase in low-frequency vibrational modes.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Energy & Fuels
Hongwei Zhu, Lingen Chen, Yanlin Ge, Shuangshuang Shi, Huijun Feng
Summary: In this study, the thermal performance of a square heat-generation body was improved through multi-objective optimization. The optimal solutions were selected using different decision methods, and the thermal performance was compared under different degrees of freedom. The results showed that the multi-objective optimization method achieved the best compromise between thermal resistance and heat transfer loss, leading to improved comprehensive thermal performance of the square heat-generation body.
Article
Thermodynamics
Minjie Yu, Feng Xin, Xiaotian Lai, Hui Xiao, Zhichun Liu, Wei Liu
Summary: The novel constructal bifurcation regenerator developed based on the constructal concept reduces flow resistance in Stirling regenerators. Through CFD analysis, the regenerator's pressure drop and heat transfer characteristics were studied, leading to the establishment of correlation equations to predict performance. Compared to other regenerators, the constructal bifurcation regenerator showed lower flow resistance and moderate heat transfer, ultimately improving the overall performance of Stirling engines.
APPLIED THERMAL ENGINEERING
(2021)
Article
Mathematics
Yunfeng Li, Zhihui Xie, Daoguang Lin, Zhuoqun Lu, Yanlin Ge
Summary: Two integrated models with different liquid cooling channel distributions in a cylindrical heating body are studied. The optimization goals are the dimensionless maximum temperature and the dimensionless entransy equivalent thermal resistance (EETR). The results show that there is an optimal center distance for each indicator and the optimal dimensionless center distances are almost the same for different proportions of channels. The maximum temperature and the EETR decrease as the proportion of channels increases.
Article
Physics, Multidisciplinary
Daoguang Lin, Zhihui Xie, Gang Nan, Pan Jiang, Yanlin Ge
Summary: In this paper, models of multi-scale line-to-line vascular channels (LVCs) with turbulent convection heat transfer are established. The constructal optimizations of LVCs with any order are conducted by optimizing the angles at bifurcations. The results show that by optimizing the angles of LVCs, the dimensionless total entropy generation rate can be significantly decreased, especially for higher-order LVCs. The optimal angles of LVCs remain unchanged as the dimensionless mass flow rate increases, except for the angles at the entrance. The dimensionless total entropy generation rate and entropy generation number (EGN) of LVCs first decrease and then increase with the growth of the dimensionless mass flow rate, with an optimal mass flow rate that minimizes both. These findings provide new theoretical guidelines for the thermal design and management of LVCs.
Article
Thermodynamics
S. Zehisaadat, R. K. Khalajzadeh, M. R. Hajmohammadi, G. Lorenzini
Summary: This study focuses on the geometric optimization of T-shaped fins and inverted fins using the constructal method to minimize entropy generation. A comparison is made with other optimization methods based on thermal conductance maximization and hotspot temperature minimization. The results show that the optimization objective has a significant impact on the optimal designs.
JOURNAL OF ENGINEERING THERMOPHYSICS
(2022)
Article
Chemistry, Physical
Qiong Tan, Han Lei, Zhiqiang Liu
Summary: The design of the flow field structure has a significant impact on the performance of PEMFC. This study proposed a new form of flow field based on the design ideas of Constructal-theory and Murray's Law, which showed improved performance in terms of output power density and overall performance compared to conventional flow fields. The research also identified the reasons for non-uniform distribution of current density in the new flow field and proposed an improvement scheme.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Huijun Feng, Zhiming Zhang, Lingen Chen, Yanlin Ge, Jiuyang Yu
Summary: In this study, the structure design of a tree-shaped compound heat transfer channel (CHTC) model in a disc heat generation body (HGB) is performed based on constructal theory. The optimal structure is obtained through optimization algorithms and compared with results from different decision making approaches. The results show that the optimized structure significantly improves the thermal and fluid flow performances.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Engineering, Multidisciplinary
Baotong Li, Hao Chen, Junhao Xu, Xinin Yin, Jun Hong
Summary: This paper studies the integrated topology optimization of vapor chambers consisting of evaporator and condenser. Through establishing fluid dynamic and generative topology optimization models, the research obtains capillary flow channel structures with improved thermal performance.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Thermodynamics
Ziqiang He, Yunfei Yan, Ting Zhao, Li Zhang, Zhien Zhang
Summary: In this study, optimal structures of fractal heat sinks were obtained using the constructal theory and genetic algorithm, and Taguchi experimental design was employed for CFD simulation to investigate the impact factors on performance. The results showed that heat flux had the highest contributions to maximum temperature and comprehensive performance, while the fractal number had the highest contribution to pressure drop.
APPLIED THERMAL ENGINEERING
(2021)
Correction
Thermodynamics
Guohua Zhang, Bengt Sunden, Gongnan Xie
Summary: This study experimentally tests and numerically investigates the heat transfer enhancement of truncated ribs in a rectangular channel with an aspect ratio of 1:4 using constructal theory. The results show significant improvements in overall thermal performance with the design of truncated ribs. Two methods to enhance heat transfer performance are proposed, and the effect of enhancement on irreversibility is evaluated by calculating the augmentation entropy generation number.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Alex Maliska de Moura, Elizaldo Domingues dos Santos, Jeferson Avila Souza
Summary: A numerical study on the design of fins geometry for a microchannel heat sink was performed based on the Constructal Theory. The study aimed to develop a deterministic method to predict the positioning and size of heat sink fins in order to achieve the lowest possible thermal resistance. The OpenFOAM software and Finite Volume method were used to solve the model equations, resulting in 12 different geometries of fins. The results showed that the best configurations combined a large fins occupation area with a low coolant flow rate, and the optimal thermal performance relied on the appropriate amount of solid material in the heat sink channel.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Physics, Multidisciplinary
Wenlong Li, Zhihui Xie, Kun Xi, Shaojun Xia, Yanlin Ge
Summary: A model of rectangular microchannel heat sink with porous medium is developed and optimized to minimize entropy generation rate. The study finds optimal aspect ratio for reducing DEGR and analyzes the effects of various factors on DEGR. Simultaneous optimization of aspect ratio and length-width ratio leads to further reduction in DEGR.
Article
Thermodynamics
Xiaojian Wang, Wenbo Gu, Hao Lu
Summary: In this study, a new relational expression is established to reveal the thermal conductivity performance of constructal fillers and the effect of filler shape. The thermal conductivity of the composite material goes through different stages with the increase of thermal contact resistance.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Ahmadreza Ayoobi, Ahmadreza Faghih Khorasani, Mohammad Reza Tavakoli, Mohammad Reza Salimpour
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2019)
Article
Thermodynamics
Mohammad Reza Salimpour, Mohammad Hossein Karimi Darvanjooghi, Ali Abdollahi, Arash Karimipour, Marjan Goodarzi
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2020)
Article
Thermodynamics
Thamir K. Ibrahim, Ahmed T. Al-Sammarraie, Wadhah H. Al-Taha, Mohammad Reza Salimpour, Manar Al-Jethelah, Ahmed N. Abdalla, Hai Tao
APPLIED THERMAL ENGINEERING
(2019)
Article
Thermodynamics
Reza Dadsetani, Mohammad Reza Salimpour, Mohammad Reza Tavakoli, Marjan Goodarzi, Enio Pedone Bandarra Filho
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2020)
Article
Thermodynamics
Thamir K. Ibrahim, Ahmed T. Al-Sammarraie, Manar S. M. Al-Jethelah, Wadhah H. Al-Doori, Mohammad Reza Salimpour, Hai Tao
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2020)
Article
Thermodynamics
S. Zahra Sajadi, Mohammad Reza Salimpour
Summary: An innovative system is introduced in this study for cooling electronic components in case of equipment malfunction. The system utilizes micro-thermostats to control fluid flow for heat dissipation, effectively reducing temperature of the electronic piece during malfunctions and hot spots.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Engineering, Aerospace
Hadi Bagheri, Seyed Ali Agha Mirjalily, Seyed Amir Abbas Oloomi, Mohammad Reza Salimpour
Summary: This study investigates the undesirable interaction between shock waves and boundary layers in the design of supersonic systems, with a focus on passive control methods. It was found that the use of micro vortex generators can effectively reduce shock wave strength and decrease energy loss in the flow, showing potential for improving aerodynamic systems design.
Article
Thermodynamics
Ali Ghahremannezhad, Huijin Xu, Mohammad Reza Salimpour, Pei Wang, Kambiz Vafai
APPLIED THERMAL ENGINEERING
(2020)
Article
Thermodynamics
Hamed Khosravi-Bizhaem, Abbas Abbassi, Mohammad Reza Salimpour, Amir Zivari-Ravan
Summary: Experimental analysis was conducted on heat transfer convection, pressure loss, and entropy generation for nanofluid flow through helical tubes. The results showed that Ag nanoparticles and MWCNT/water can enhance heat transfer rate, while GO/water decreases heat transfer rate.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Andisheh Tavakoli, Mohammad Reza Salimpour, Kambiz Vafai
Summary: The study focuses on the design and optimization of boron arsenide insert structures embedded in the heat spreader of a 3-D Integrated Circuit. Different boundary conditions were examined to determine the impact on the optimal configuration of the inserts, with results showing significant reduction in maximum temperature compared to using a plain heat spreader.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2021)
Article
Biochemical Research Methods
Sahar Jafari Nivlouei, M. Soltani, Joao Carvalho, Rui Travasso, Mohammad Reza Salimpour, Ebrahim Shirani
Summary: This study models the biological and physical behavior of tumor evolution in the presence of healthy tissue, considering events like signaling pathways activation, vessels growth, and competition between cancer cells and healthy tissue. Results show that competition between normal and cancer cells leads to hypoxic tumor core formation and the development of a dense intratumoral vascular network indicating high malignancy. By simulating therapy that blocks signaling pathways, tumor growth can be prevented and reduced significantly. The multiscale model introduced in this work captures cellular interactions and cell behavior, providing insights into targeted therapy and novel therapeutic procedures.
PLOS COMPUTATIONAL BIOLOGY
(2021)
Article
Engineering, Aerospace
Hadi Bagheri, Seyed Ali Agha Mirjalily, Seyed Amir Abbas Oloomi, Mohammad Reza Salimpour
Summary: The study evaluated the effects of adding flow momentum to control oblique shock waves in a low-aspect-ratio three-dimensional duct with supersonic flow. Results showed that adding momentum led to a decrease in separation region and shock strength.
Article
Engineering, Chemical
Ali Yousefi Tireh Shabankare, Seyed Ali Agha Mirjalily, Seyed Amir Abbas Oloomi, Mohammad Reza Salimpour
Summary: This study experimentally verified that the use of tubes with extended surface of twisted fins can enhance heat transfer, increasing the mean heat transfer coefficient by about 47% compared to smooth tubes.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Meeting Abstract
Medicine, General & Internal
S. Jafari Nivlouei, J. Carvalho, R. Travasso, M. Soltani, M. R. Salimpour, E. Shirani
EUROPEAN JOURNAL OF CLINICAL INVESTIGATION
(2021)
Article
Thermodynamics
Farzad Fathian, Seyed Ali Agha Mirjahly, Mohammad Reza Salimpour, Seyed Amir Abbas Oloomi
JOURNAL OF ENHANCED HEAT TRANSFER
(2020)
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
