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Heat transfer enhancement mechanics of different micro-disturbing structures for transcritical hydrocarbon fuel using 3-D secondary flow intensity analysis Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-09 Wenhao Liao, Xin Li, Silong Zhang, Ningfei Wang, Wen Bao
Heat transfer enhancement based upon micro-disturbing structures becomes increasingly important for thermal protection of air-breathing propulsion systems. To explore the influence mechanism of different structures on heat transfer in regenerative cooling channels of scramjet engines, flow structures and heat transfer of supercritical-pressure n-Decane in mini-channels with dimple and micro-rib arrays
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Turbulent and non-turbulent analysis of thermomagnetic convection and heat transfer of darcian radiative nanofluid flow across inclined stretching surface in microgravity environment Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-09 Maalee Almheidat, Zia Ullah, Mohamed Ahmed Said, Mohamed Hussien, Saleh Al Arni, M.D. Alsulami, Ahmed Osman Ibrahim, Abdullah A. Faqihi
Turbulent and non-turbulent analysis of thermomagnetic convection, heating rate and mass transport of Darcian radiating nanofluid flow through porous slanted sheet is the aim of present study. Influence of microgravity is more useful for the movement of thermophoresis nanoparticles with maximum temperature and density. Joule heating, porous medium, magnetic field and thermal radiations are incorporated
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Phase transition of Fe-containing phase in naturally cooled and water-quenched copper slags during high-temperature treatment Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-09 Jiantao Gong, Ding Luo, Jilai Zhang, Youbo Su, Yonglan Zong, Ming Jiang
Iron (Fe) accounts for the highest-content of valuable metal recoverable from copper slag, which is most effectively recycled using pyrometallurgical high-temperature treatment. It is believed that the roasting temperature significantly affects the physical structure of copper slag. Therefore, this paper used thermogravimetry-differential scanning calorimetry (TG-DTG-DSC), X-ray fluorescence spectroscopy
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Investigating bubble dynamics on silicon carbide surfaces during flow boiling Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-09 Kuanghan Deng, Bing Tan, Songbai Cheng, Rulei Sun, Haoliang Ren
Silicon carbide (SiC) is a promising candidate for Accident-Tolerant Fuels (ATFs) in nuclear power plants, critical for maintaining functionality and extending service lifespan due to its superior heat transfer properties. However, the dynamics of bubble formation, size, and distribution on SiC surfaces during flow boiling, especially under the influence of porosity, remain poorly understood. This
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Study on cold start of fuel cell stack combined with liquid heating and fuel cell self-starting Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-08 Weihao Zhu, Youtang Wang, Song Gao, Fang He, Chengyu Li, Yanbo Wang
Fuel cell vehicles have been paid more and more attention, while the low temperature cold start capability has become the main reason that hinders their large-scale commercialization, especially for the fuel cell bus. Generally, liquid heating (positive temperature coefficient thermistor (PTC) as the heat source) and fuel cell self-starting heating are the common cold start methods. However, these
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Stability analysis of magnetohydrodynamic Casson fluid flow and heat transfer past an exponentially shrinking surface by spectral approach Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-07 Vishwanath B. Awati, Akash Goravar, Mahesh Kumar N, Gabriella Bognár
The present analysis examines the magnetohydrodynamic (MHD) flow of non-Newtonian Casson fluid on an exponentially shrinking surface under constant and exponentially varying wall temperature with suction. The main objective is to investigate multiple solutions of self-similar coupled nonlinear ordinary differential equations derived semi-numerically via the shifted Chebyshev collocation approach. The
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Thermal regulation enhancement in multi-story office buildings: Integrating phase change materials into inter-floor void formers Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-07 Pouyan Mokhberi, Pezhman Mokhberi, Masoud Izadi, Mohadeseh Bagheri Nesaii, Wahiba Yaici, Federico Minelli
Addressing the thermal loss from building envelopes is a crucial challenge and requires the exploration of various mitigation strategies. This study employs comprehensive 3D computational fluid dynamics simulations to investigate the incorporation of various bio-based Phase Change Materials (PCMs) including CrodaTherm (CT) 19, CT21, and CT24W, within inter-floor void formers between the roof-floor
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Process of cabin smoke and flame propagation and emergency evacuation characteristics of personnel during sudden fire of Boeing 737 Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-06 Tianqi Liu, Kenan Liu, Ruiheng Jia, Weiye Tian
Cabin fires and emergency evacuation of personnel are hot topics in aviation safety. To obtain the characteristics of cabin fires and personnel evacuation, a study is conducted on the Boeing 737, and the results show that after the fire occurs, smoke first spreads towards the top and then rapidly spreads towards both ends of the cabin. The propagation speed of smoke is greater than that of flame, as
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Investigation of heat transfer performance and enhancement mechanisms of supercritical carbon dioxide in PCHE with fractal airfoil fins Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-06 Yong Li, Yu Fu, Jin Zhang, Jiajie Zhang, Jing Xu, Suxia Ma, Bengt Sunden, Gongnan Xie
A fractal structure featuring symmetric/asymmetric airfoil fins is embedded within the smooth channels of the printed circuit heat exchanger (PCHE), significantly enhancing its heat transfer performance. In this study, a horizontally installed two-layer channel configuration is examined, with hot CO flowing through the upper channel and cold CO through the lower channel. Two distinct airfoil fin designs
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Improving building energy efficiency through ventilated hollow core slab systems Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-06 Muntadher Hashim Abed, Hasan A. Al-Asadi, Ahmed Oleiwi, Saif Ali Kadhim, Mortatha Al-Yasiri, Ahmed Mohsin Alsayah, Dhuha Radhi Nayyef
The increasing desire for comfort and healthy indoor environment, as well as improvements in energy standards in recent years, have stressed the need to make an active use of the building mass to achieve the maximum energy saving This is why the application of ventilated hollow-core slab systems (VHCS) can be considered as one of the innovative approaches. These systems have precast concrete slabs
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Numerical and experimental investigation of a solar air heater duct with circular detached ribs to improve its efficiency Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-06 G.K. Chhaparwal, Rahul Goyal, Ankur Srivastava, Ashish Goyal, Ankit D. Oza, Md Irfanul Haque Siddiqui, L Natrayan, Laveet Kumar, Sonawane Chandrakant
A solar air heater duct (SAH-duct) SAH-duct has low thermal performance due to the low heat transfer coefficient of air which is the working fluid. Proper mixing of relatively hot and cold air with respect to the hot absorber plate of the SAH-duct can enhance heat transfer. It can be achieved by placing suitable hindrances in the path of airflow like detached ribs. This study presents the numerical
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Entropy generation and heatline visualization of magnetized thermal convection in an irregular enclosure filled with nanofluid and subject to non-uniform heating: FEM-machine learning hybrid approach Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-06 Hasan Shahzad, Zhiyong Li, Tingting Tang, Yongyu Xie, Zhuobin Lin
This investigation's primary objective is to analyze the fluid dynamics and heat transfer enhancement in an irregular enclosure. Several physical phenomena such as Alumina-water nanofluids, magnetic field, non-uniform heating and amplitude of non-uniform heating are taken into account. A thorough investigation using machine learning algorithms (MLAs) and computational fluid dynamics (CFD) is carried
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Study on the influencing factors of gas-liquid two-phase explosions of hybrid methane/isoprene on the basis of bush fires Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-05 Meng Li, Yang-fan Cheng, Dan-yi Li, Rui Wang, Toshio Mogi
To evaluate the explosion hazard of hybrid isoprene/biogas in a primary forest environment, a 20 L spherical explosion vessel combining with a colorimetric thermometry was used to study the explosion parameters, flame structures and temperature distributions of hybrid isoprene/methane at different methane content and initial temperatures. Furthermore, the relationships between the explosion gas products
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Experimental study on the ignition delay characteristics of pyrolysis gas from kerosene with hydrogen peroxide addition Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-04 Jie Zhou, Dong Zheng, Hui-Sheng Peng, Tao Zhong
The ignition issue of the hypersonic aircraft remains a challenging task due to the extremely short residual time of milliseconds. To study the potential candidate of hydrogen peroxide for ignition enhancement, the ignition delay times of pyrolysis gas with the addition of 0–5000 ppm hydrogen peroxide were experimentally measured and quantitatively analyzed at temperatures of 833.8–962.1 K, equivalence
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Evaluation of carbon emissions for fresh food last-mile delivery: A comparative analysis of two refrigeration methods Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-04 Zongsheng Zhu, Shouzheng Zhao, Jianyu Liu, Meijun Wang, Xinli Lv
This study compares carbon emissions from last-mile fresh food delivery using traditional cold storage plates and a new photovoltaic (PV) direct-drive cooling model. A life cycle analysis shows that while the PV model has higher initial production emissions in six cities, it achieves a 97.95–98.78 % reduction in total emissions over 20 years compared to the traditional model. The cold storage plate
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Thermal performance improvement for parabolic trough solar collectors integrated with twisted fin and nanofluid: Modeling and validation Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-04 Guoliang Hou, Anupam Yadav, Eyhab Ali, Youssef Ali Naeem, Fadwa Fathallah Ahmed, Khursheed Muzammil, Khaldoon T. Falih, Hussam Abdali Abdulridui, Eftikhaar Hasan Kadhum, Alaa A. Omran, Ahmed Elawady
The low thermal efficiency of parabolic trough solar collectors (PTSCs) is a major drawback that has hindered their development as a viable renewable energy resource. Among the available methods to enhance the thermal performance of PTSCs, installing internal fins within the collector tube is one of the most reliable, economical, and straightforward passive techniques. However, while internal fins
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Assessment of temperature distribution on inclined porous rod with a convective and insulated tip Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-03 Saima Riasat, Mohamed R. Ali, Shamsa Kanwal, Ahmed S. Hendy
The following work focuses on determining the temperature profile of porous rod using radiative and insulated tip conditions. In addition, graphs are generated to investigate the impact of several non-dimensional attributes on the distribution of temperature for various modes of energy exchange, such as boiling of nucleates and radiative energy exchange, including the convection-conduction parameter
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Simulation study on the spread characteristics of fires and control measures in high-inclination belt conveyors Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-03 Chunhua Zhang, Jinquan Chen, Xuan Kang
Understanding the behavior of high-temperature smoke propagation in roadways during coal mine fires and evaluating control measures are crucial for enhancing safety. This study, based on a significant fire incident at Chongqing Songzao Coal Mine, utilized PyroSim software to model the affected roadway. The laws governing smoke propagation and changes in temperature and CO concentration after fires
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Performance prediction and regression analysis of scroll expander based on response surface methodology Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-03 Kaixiang Zhen, Lei Shi, Yonggui Zhang, Bin Peng
The Organic Rankine Cycle (ORC) plays a pivotal role in the domain of renewable energy, adeptly harnessing thermal energy from sources such as solar and geothermal to generate electrical power. Central to this system is the scroll expander, whose operational efficacy directly influences the ORC's overall efficiency. This study initiates with a detailed numerical analysis of the impact of various operational
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Advancing sustainable cooling: Performance analysis of a solar-driven thermoelectric refrigeration system for eco-friendly solutions Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-02 Adnan Qamar, Ammara Kanwal, Muhammad Amjad, Muhammad Farooq, Adeel Munir, Shafiq Ahmad, Mali Abdollahian
The solar-powered thermoelectric refrigerator (SPTR) is an innovative approach that uses solar energy to cool spaces. Its effectiveness relies on solar insolation rates and an intelligent dual-axis solar tracking system (STS) that maximizes solar energy capture. Performance analysis of SPTR with the fixed panel solar system (WST) and dual-axis STS by keeping the SPTR at a standard ambient temperature
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Torque and energy recovery of a compressor disk cavity in gas turbine engines Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-02 Wenjie Shen, Suofang Wang, Fangyang Huang, Mengyuan Wang
The torque generated by high-speed airflow has a beneficial impact on a compressor disk cavity with radial inflow. The purpose of this study is to investigate the torque and energy recovery of a compressor disk cavity with tubed vortex reducer (TVR) to improve the secondary air system performance of gas turbine engines. Numerical simulations are performed to investigate the temperature and shear stress
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Study of combustion flow field in a scramjet engine under inflow oscillation variations based on OpenFOAM Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-02 Changhao Wang, Zhe Fang, Xin He, Xing Zheng, Jing Yang, Rui Xue, Xiangrui Zou
In this study, a compressible supersonic numerical model was established based on the open-source computational fluid dynamics software OpenFOAM. The supersonic air inflow was set in sinusoidal variation and gas hydrogen was employed as fuel for the DLR engine numerical simulation. The SST k-ω model and a 9-species 27-reaction hydrogen/oxygen chemical reaction model was employed as the turbulence and
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Development of conjugate heat- and moisture-transfer model for pineapple drying using OpenFOAM Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-02 Supachok Chokngamvong, Chakrit Suvanjumrat
The kinetic model of drying is important for food preservation, particularly for pineapples, which have a high moisture content and are highly perishable. This paper presents a novel approach utilizing OpenFOAM, which is an open-source computational fluid dynamics (CFD) software, to model the hot-air drying kinetics of pineapple slices. The developed conjugate heat- and moisture-transfer model integrates
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Heat transfer analysis of mixed convection boundary layer blood base nanofluids with the influence of viscous dissipation Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-01 Ali Rehman, Ibrahim Mahariq, Dolat khan, Hassan Ali Ghazwani
In this research study, we delve into the analysis of two-dimensional boundary layer incompressible viscous flow of blood based nanofluids, incorporating a couple stress model. This investigation encompasses considerations of heat transmission and viscous dissipation effects. Specifically, focus on a particular type of nanoparticle, Magnesium oxide (MgO), dispersed in blood, the base fluid. By employing
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Thermal analysis of AIN-Al2O3 Casson hybrid nano fluid flow through porous media with inclusion of slip impact Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-01 Muhammad Idrees Afridi, C Srinivas Reddy, A.R. Deepika, K. Govardhan
A mathematical analysis of magnetized Casson hybrid nanofluid flow over a stretching permeable sheet with porosity effects and being exposed to thermal convective boundary conditions with slip in velocity and concentration have been presented numerically. The attained steady-state partial differential equations are highly coupled and nonlinear in nature and are not agreeable to any of the direct techniques
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Comparison between tritium breeders with pebble bed and Gyroid block configurations using numerical investigation: Flow behavior and heat transfer performance Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-01 Junyi Zhou, Hangyu Chen, Baoping Gong, Xiaoyu Wang, Jili Cai, Chao Cai, Yusheng Shi
This study proposed using a Gyroid structure, a type of triply periodic minimal surface (TPMS), to replace conventional pebble bed configurations and address drawbacks such as inherently low packing fractions, extensive stress concentrations, high flow resistance, and low thermal conductivity. The feasibility of the Gyroid block configuration was evaluated by comparing it with a pebble bed configuration
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Numerical and neural network approaches to heat transfer flow in MHD dissipative ternary fluid through Darcy-Forchheimer permeable channel Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-01 D Harish Babu, K Kumaraswamy Naidu, B Hari Babu, K Venkateswara Raju, S Harinath Reddy, P.V Satya Narayana
The study of heat transfer in fluid flows across permeable media is critical in many engineering applications, including energy systems, cooling technologies, and chemical processes. This study aims to explore the impact of joule heating and heat transfer flow of an MHD dissipative ternary fluid through a channel embedded in a Darcy-Forchheimer permeable medium. Additionally, the utilization of ternary
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Thermal optimization of buoyancy driven radiative engine-oil based viscous hybrid nanofluid flow observing the micro-rotations in an inclined permeable enclosure Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-01 Kamil Abbas, Wang Xinhua, Ghulam Rasool, Tao Sun, Izzat Razzaq
Thermal enhancement of engine oil plays an important role in a variety of industrial applications including heat exchangers, automotive cooling systems, renewable energy systems, biomedical devices, and advanced manufacturing processes. Considering the high demand in industry, present investigation explores thermal optimization of engine oil contained in a porous inclined cavity involving dispersion
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Experimental investigation of Triply Periodic Minimal Surfaces for high-temperature solar receivers Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-01 A. Mortazavi, A.L. Ávila-Marín, H. Ebadi, E. Gajetti, C. Piatti, L. Marocco, L. Savoldi
This study experimentally investigates Triply Periodic Minimal Surfaces (TPMS) as structured porous media for concentrated solar power systems. Two mock-up planar solar receivers with different TPMS lattices, Diamond and SplitP, were fabricated using Additive Manufacturing. Testing was conducted within the SFERA III project, funded by the EU, utilizing a solar simulator facility at in Madrid, Spain
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Numerical simulation of JAG-type corrugated plate structure optimization and enhanced heat transfer by pulsating flow Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-01 Yuechan Liu, Yongdong Pu, Chao Sun, Shiqin Ai
The paper presents a numerical investigation of the structural optimization of a JAG-type corrugated plate and enhanced heat transfer under pulsating flow based on the research results that have been achieved. Firstly, the corrugation pitch, corrugation depth, and corrugation inclination of the corrugated plate were optimized using Taguchi method to obtain the best heat transfer performance. Secondly
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Mechanical vibration's effect on thermal management module of Li-ion battery module based on phase change material (PCM) in a high-temperature environment Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-07-01 Jingyi Shen, Hayder I. Mohammed, Sheng Chen, Babakalli Alkali, Maji Luo, Jiebo Yang
PCM-based systems play a crucial role in managing the thermal conditions of electric vehicle (EV) battery modules, a critical aspect in ensuring their optimal performance. However, an often overlooked facet in current research is the impact of mechanical vibration on EV battery modules during real-world driving scenarios. Addressing this gap, the current article takes a pioneering approach, drawing
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Research on tunnel vehicle fire temperature field simulation considering the latent heat of vaporization inside concrete linings Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-30 Yiheng Zhang, Jihong Ye, Chunjin Lin
The high temperatures and non-uniform temperature fields caused by fires can lead to the rapid failure of linings, severely affecting tunnel safety. To obtain the temperature distribution of the lining under different fire conditions, simulation research is conducted by CFD technology. First, the fire resistance test of lining is simulated, and a furnace temperature simulation method based on PID control
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Experimental study on liquid immersion preheating of lithium-ion batteries under low temperature environment Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-29 Jiakang Bao, Zhifu Zhou, Wei-Tao Wu, Lei Wei, Jizu Lyu, Yang Li, Heng Huang, Yubai Li, Yongchen Song
An experimental platform to examine the effects of single-phase immersion preheating on lithium-ion battery performance at low temperatures was set up in this study. The performance of lithium-ion batteries at low temperatures can be improved through immersion preheating. After preheating from −15 °C to 15 °C, the battery capacity can recover to over 80 % of its rated capacity. The three influencing
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Performance investigations on fluorine-rubber-tube-laying pumping wet shotcrete filled with microencapsulated phase change materials Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-28 Yue Xiao, Bing Liu, Xuefei Han, Qifei Sun, Yu Zhang, Tenghua Gao, Wenyu Yang
The challenge of mitigating adverse climatic conditions is a critical issue that affects worker safety and operational efficiency in underground engineering. This study introduces an innovative approach using pumping wet shotcrete as an insulating material, incorporated with microencapsulated phase change materials (MPCMs) and filled within fluorine rubber tubes to address this concern. The MPCMs were
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Experimental study of the temperature profile induced by the tunnel wall fire plume at various source-ceiling heights Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-28 Xiang Fang, Yajun Huang, Fei Ren, Hao Zhang, Congcong Li
The smoke temperature profile beneath the ceiling of tunnel is one of the most important parameters to evaluate the tunnel fire risk and guide the early fire detection. This paper investigates experimentally the temperature profile induced by the tunnel wall fire plume at various source-ceiling heights. A series of experiments were carried out in a reduced-scale tunnel and a burner combustion inside
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Parameter fine tuning on CRDI engine operated with blends of grape biodiesel and diesel Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-28 P. Prakash, P.V. Elumalai, Hariharan Chelladurai, Golden Renjith Nimal Renjith Josephine, Ramesh Velumayil, Mohammad Asif, Chan Choon Kit, Balambica Venkatesan, Sabarish Rajagopal, Baskar Sanjeevi, M. Venkateswar Reddy, Prabhakar S
This study investigates the feasibility of using grape biodiesel from the wine industry as a sustainable and cost-effective alternative to traditional fuels. The research focuses on optimizing key parameters like blend ratio, injection timing, injection pressure, engine load, and exhaust gas recirculation in a Common Rail Direct Injection engine to achieve low emissions without compromising performance
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Performance of proton exchange membrane fuel cell system by considering the effects of the gas diffusion layer thickness, catalyst layer thickness, and operating temperature of the cell Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-27 Sajad Hamedi, Ali Basem, Murtadha M. Al-Zahiwat, Ahmed Khudhair AL-Hamairy, Dheyaa J. Jasim, Soheil Salahshour, Sh. Esmaeili
In this research, the effect of anode and cathode channel cross-sectional shape on the performance of PEM fuel cell was investigated and the appropriate length and dimensions of the channel were determined. Finally, for the determined geometric conditions, the cell performance at different voltages was investigated. The purpose of this study was to investigate the structural characteristics of the
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Enhanced performance of two-stage ejector based on flow-field coupling effect in MED-TVC systems Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-27 Qingyang Han, Wenxu Sun, Ailing Yao, Hailun Zhang, Zhenfa Yang, Lei Jia, Haoyuan Xue
Steam ejectors serve as prevalent flow devices in multi-effect distillation systems, collecting excess steam and energy to promote sustainable energy utilization. In contrast to traditional ejectors, two-stage ejectors exhibit superior pressurization and vacuum capacities. However, the flow-field coupling effect, which is closely related to the entrainment performance of the two-stage ejector, is rarely
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Numerical investigation of the effect of the number of fins on the phase-change material melting inside a shell-and-tube cylindrical thermal energy storage Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-27 Farhan Lafta Rashid, Abbas Fadhil Khalaf, As'ad Alizadeh, Mudhar A. Al-Obaidi, Soheil Salahshour, Choon Kit Chan
A numerical analysis of the fin count that affects phase change material (PCM) melting within a cylindrical shell-and-tube thermal energy storage (TES) is provided. Using the ANSYS/FLUENT 16 tool, the enthalpy-porosity combination was quantitatively evaluated. PCMs made of paraffin wax were used in this experiment (RT42). The results of this investigation show that fins significantly affect melting
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Energy and exergoeconomic analyses of parallel cross feed multi effect desalination system driven by twin-screw compressor with water injection Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-27 Osman Shamet, Mohamed A. Antar
This work proposes the design of a parallel cross-feed multi-effect desalination system with a twin-screw compressor, incorporating water injection to enhance system performance. The improvement is achieved by injecting water during the compression process to increase the isentropic efficiency of compression. The mathematical model is solved using Engineering Equation Solver software, and the resulting
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Numerical research on the flow and heat transfer characteristics in the immersion jet cooling for servers Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-27 Yingying Zhang, Yu Wang, Risto Kosonen, Dawar Asfandyar Khan, Xincheng Wang
Immersion cooling and jet impingement liquid cooling, as two of the significant emerging direct contact liquid cooling methods, have promising prospects for development and application. The two cooling methods are combined and numerical simulation is applied to study the heat transfer performance of the immersion jet-cooled server. The orthogonal method is employed to determine the optimal structural
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Flow analysis of temperature-dependent variable viscosity Phan Thien Tanner fluid thin film over a horizontally moving heated plate Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-27 H. Ashraf, Dean Chou, Rabia Hameed, Hamood Ur Rehman, Aziz Ullah Awan, Abdul Malik Sultan
Comprehending the temperature-dependent variable viscosity Phan Thien Tanner fluid film flow over a horizontal heated plate with surface tension is essential to enhancing coating and lubrication process prediction models. This paper accords with the flow analysis of a temperature-dependent variable viscosity Phan Thien Tanner fluid film over a horizontal heated plate. The flow over a heated plate occurs
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Theoretical research on high-efficiency region in cryogenic micro flow heat transfer based on thermal and viscous Knudsen numbers Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-27 Huikun Cai, Zhaoyang Li, Zhihong Du, Yidong Lu
Cryogenic micro flow heat transfer (CMFHT) has been increasingly interest nowadays due to the urgent needs of superconductive technology, quantum engineering, space cryocooler and other frontier fields. Chasing its high-efficiency region is a key challenge as thermal penetration depth is limited in cryogenic microscale. Therefore, this paper focuses on high-efficiency region in CMFHT, and newly proposes
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Numerical investigation of thermal-hydraulic performance enhancement in helical coil heat exchangers with twisted tube geometries Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-27 Valiyollah Ghazanfari, Mohammad Mahdi Shadman, Fatemeh Mansourzade, Younes Amini
This numerical study examines the thermal-hydraulic performance of helical coil heat exchangers (HCHEs) using twisted tubes versus conventional circular tubes. The effects of Reynolds number (Re = 10,000 to 100,000), pitch length (11, 7.2, 5.5, 3.6 mm), and twisted tube orientation (co-current, counter-current) on heat transfer efficiency and pressure drop were investigated. The results show that higher
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Study of air supplement velocity by thermal stack effect and critical velocity under longitudinal ventilation in the uniclinal V-shaped tunnel Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-27 Yaolong Yin, Zhisheng Xu, Zhiqiang Lei, Baochao Xie, Qiulin Liu
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Investigating the effect of heat flux on tetracycline absorption by bio-MOF-11 nanostructure: A molecular dynamics approach Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-26 Zhiming Liu, Ali Basem, Haydar A.S. Aljaafari, Sami Abdulhak Saleh, Tareq Jwad Kazem, Mohammed Khaleel Jameel, Soheil Salahshour, Sh. Baghaei
Tetracycline is a type of antibiotic that falls under the category of antibiotics. Studying the absorption process of Tetracycline by bio-MOF-11 carrier is important for enhancing drug delivery efficiency, optimizing dosage, and increasing bioavailability, ultimately improving treatment outcomes and potentially leading to the development of new therapies. The present study examined the effect of variable
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Numerical investigation of the effect of fluid nanohybrid type and volume concentration of fluid on heat transfer and pressure drop in spiral double tube heat exchanger equipped with innovative conical turbulator Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-26 Neaman Sohrabi, Reza Haddadvand, Hossein Nabi
Spiral heat exchangers in the heat transfer field have attracted researchers' attention due to their better heat transfer characteristics. This review discusses the increase in efficiency of this type of converter. to better understand the efficiency of the intended spiral exchanger, thermal efficiency (performance evaluation criteria) was chosen as the performance index in the present work, and the
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Photocatalysis case study of wastewater treatment using magneto-radiative Williamson tri-hybrid nanofluid Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-26 Taghreed H. Al-Arabi, Nasser S. Elgazery
As a result of the tremendous development in all aspects of life, the increase in population day after day, and the scarcity of freshwater resources sufficient to meet the needs of living organisms on the surface of the earth, all these reasons called for an attempt to treat wastewater supported by solar energy to raise the temperature and facilitate the operation of wastewater treatment systems. Health
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Fluctuating blood flow of a two-phase dusty fluid undergoing isothermal heating Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-26 Muhammad Junaid, Ilyas Khan, Sultan Alshehery, A.F. Aljohani
This study investigates the dynamic behavior of a two-phase dusty fluid under isothermal heating conditions, with implications for physiological fluid dynamics. The fluid, modeled as blood in contrast to a Casson fluid, flows within a channel formed by two inclined plates. One plate experience arbitrary wall shear stress, while the other undergoes oscillations. Magnetic field and porous medium effects
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Thermal hydraulic behavior of a large dimension hybrid heat pipe/oscillating heat pipe Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-26 Lilin Chu, Xu Zhao, Zheng Li, Yin Sun, Jin Xu, Zongyu Wang, Zhihao Zhou
Similar to the layout of an oscillating heat pipe (OHP), a quartz hybrid heat pipe (HHP) with an inner diameter of 5 mm, exceeding 59.7 % of the capillary threshold of OHP, was designed. The detailed thermal hydraulic behavior of fluid in the HHP has been revealed. It was found that the HHP undergoes a heat transfer mode transition from phase change to pulsating flow. It is also means that the liquid
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Thermal-solutal transport analysis deploying novel fluxes in viscoplastic material when velocity slip, non-Darcian porosity and stratification effects are significant Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-25 Muhammad Waqas, Muhammad Nasir, Muhammad Salman Kausar, Nadia M. Sarhan, Nurnadiah Zamri, Shahid Farooq, Khaled A. Gepreel, Barno Sayfutdinovna Abdullaeva
Non-Fourier relation elucidates conduction of heat subjected to finite thermal wave proliferation speed whereas non-Fick relation reports anomalous diffusion differing from orthodox Fickian conduct. Their applications encompass the modeling of heat-mass transference in biological tissues, environmental engineering and micro/nanoscale systems. These models improve prediction precision in heterogeneous
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Investigation on thermal feedback and combustion characteristics of wall-attached pool fires with different aspect ratios and orientations induced by sidewall Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-25 Cong Li, Yanke Jin, Chenhui Wang, Jiali Wang, Quanyi Liu, Rui Yang
The occurrence of pool fires adjacent to a sidewall poses significant risks. To investigate fire source combustion characteristics and thermal feedback of sidewall-attached fires, experiments involving rectangular heptane pool fires with varying aspect ratios and pool orientation relative to sidewall were conducted. The flame tilting behavior, temperature near sidewall, thermal transfer process and
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Thermal-economic performance evaluation and bi-objective optimization of organic Rankine cycles using pure and mixed working fluids for waste heat recovery Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-25 Junsheng Feng, Yaru Yan, Xinni Cheng, Liang Zhao, Hui Dong
To further enhance the recovery rate of low temperature waste heat, the low temperature flue gas in the sinter annular cooler is chosen as the heat source of organic Rankine cycle (ORC) system in the current study, and the system thermal-economic performance evaluation are conducted. The thermal-economic performance models of ORC system are established firstly, and the butane and isopentane are selected
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System performance comparison of oxygen consumption and air separation for aircraft fuel tank inerting Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-25 Lei Shao, Jingxin Tan, Weihua Liu, Jiahao Yang, Bo Hei, Jiahao Qu
To compare the performance of oxygen consumption and air separation inerting systems. This paper established the mathematical models of the oxygen consumption inerting system and air separation inerting system by mass conservation and energy conservation formula, and the equal inerting time method is adopted to assess the overall performance of the two systems. The two system performances, such as
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A case study of thermal performance of gas-steam combined cycle with gas turbine inlet air cooling and condenser deep cooling Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-25 Hemin Hu, Tao Wang, Yufei Ren, Fan Zhang, Bing Zhang, Jianchao Li
To enhance power generation during high summer temperatures and address the power supply and demand imbalance in gas-steam combined cycle, this study explored the exhaust gas waste heat refrigeration scheme, along with the optimal scheduling of cooling capacity between the precooling of inlet air for the gas turbines and deep cooling for condenser in steam cycle. Using the Ebsilon software, we investigate
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Hazard evaluation of ignition sensitivity and explosion severity for aluminum and aluminum powder-petroleum ether mixtures Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-25 Xingliang Wu, Yu Xia, Sensen An, Yimin Luo, Yanru Wang, Yaning Li, Sen Xu
The safety implications of aluminum powder and petroleum ether have garnered significant attention as two typical materials in the production process of energetic materials. To investigate the effect of the common solvent petroleum ether on the ignition and explosion characteristics of aluminum powder, ignition energy, flame propagation characteristics, and explosion pressure of three aluminum powder
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Unveiling thermal and hemodynamic effects of aneurysm on abdominal aorta using power law model and finite element analysis Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-24 Azad Hussain, S. Bilal, Tayyaba Arshad, Muhammad Naveel Riaz Dar, Abeer Ahmed Aljohani, Muhammad Bilal Riaz, Ehab Ghith
The objective of this study is to find causes of aortic diseases and investigating the ways for better treatment. The governing system of equations has been demonstrated to account for characteristics of blood. The governing system of equation has been solved using the finite element method with appropriate boundary conditions. We analyzed into the relationship between flow characteristics via the
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Numerical simulation of Darcy–Forchheimer flow of Casson ternary hybrid nanofluid with melting phenomena and local thermal non-equilibrium effects Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-24 Munawar Abbas, Nargis Khan, M.S. Hashmi, Zabidin Salleh, Hameed Ullah, Abdullah Saad Alsubaie, Shahram Rezapour, Mustafa Inc
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Numeral simulation of solution mixing effect and product preparation effect in the process of preparing cerium oxide by microwave heating Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-24 Chao Lv, Yanlong Liu, Guannan Li, Tao Yang, Hongliang Zhao, Xuxin Chen
Microwave heating has the characteristics of simple control and high efficiency, in which electromagnetic force plays an important role. Using the UDF function and energy equation in FLUENT software, the electromagnetic force model in the tube is established. The mixing process of cerium chloride solution under different heating modes, the mixing effect of Lorentz force and the preparation process
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Heat transfer enhancement characteristics of sinusoidal corrugated tubes fabricated via laser powder bed fusion Case Stud. Therm. Eng. (IF 6.4) Pub Date : 2024-06-24 Changyong Liu, Shengwu Zhang, Chenggang Zheng, Wanli Wang, Yangxin Wang, Zhiyuan Liu, Zhangwei Chen
Laser powder bed fusion (LPBF) has emerged as a powerful tool to develop heat transfer devices with higher efficiency. Corrugated tubes are commonly used components to achieve enhanced heat transfer in these devices. However, there still lacks a comprehensive study on the thermal-hydraulic performance of LPBF-fabricated corrugated tubes. In this work, we investigated the heat transfer enhancement characteristics