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Enhanced prediction of the decongealing performance of aero-engine oil coolers with various fin types and operating conditions using lumped model Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-23 Foster Kwame Kholi, Hyo Je Son, Jaehyun Park, Man Yeong Ha, Michael Klingsporn, Jason Chetwynd-Chatwin, Jae Sung Yang, June Kee Min
Freezing of the flight environment of an aircraft occasionally causes the congealing of oil in the oil coolers. Although decongealing tests and re-designs require longer durations, many studies have examined the cooling loss arising from this phenomenon. Numerical simulations for the decongealing process are computationally expensive, and experiments under typical operating scenarios are costly. In
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Numerical investigation of the effect of vibration on spray cooling heat transfer in the non-boiling region Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-22 Zhenhong Luo, Kun Liang, Xinwen Chen, Zhaohua Li, Xiang Wang, Hang Zhou, Yucheng Wang
Vibrations profoundly influence the liquid film formed by spray droplets in spray cooling applications. However, understanding heat transfer mechanisms in the non-boiling region under vibrating conditions is limited in the existing literature. This study aims to bridge this gap by numerically investigating the heat transfer performance of spray cooling in non-boiling regions under vibration using the
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Thermal performance of radiated annular extended surface using advanced nanomaterials influenced by various physical controlling parameters for nucleate boiling case Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-22 Walid Aich, , Hamad Almujibah, Sherzod Shukhratovich Abdullaevd, Mutasem Z. Bani-Fwaz, Ahmed M Hassan
Applications The fins are extended surfaces around different objects to enhance their thermal transmission from the object to the surrounding environment. These are significant for electronics cooling, car radiator, heat exchanging devices, compressors and electric motor etc. Purpose and methodology The main concerns of this study are to analyze the heating/cooling performance of annular fin for nucleate
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Magnetized casson SA-hybrid nanofluid flow over a permeable moving surface with thermal radiation and Joule heating effect Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-20 Liaquat Ali Lund, Adnan Asghar, Ghulam Rasool, Ubaidullah Yashkun
Here in, heat transfer characteristics of a magnetized Casson sodium alginate-alumina/copper hybrid nanofluid flowing through the permeable moving plane are investigated considering the effects of thermal radiation and Joule heating with Tiwari and Das model. The primary objective of the present study is to investigate the influence of the velocity ratio parameter on the solid volume fraction and the
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Analytical analysis of the double stratification on Casson nanofluid over an exponential stretching sheet Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-20 M. Siva Sankari, M.Eswara Rao, Waris Khan, Mansoor H. Alshehri, Sayed M. Eldin, Shahid Iqbal
Nanofluids have shown tremendous potential in the heat intensification of several manufacturing industries and have been utilized extensively in energy technologies in recent years. The goal of this exploratory paper is to examine the impact of double stratification on steady two-dimensional MHD Casson nanofluid flow over an exponentially porous stretching sheet. Thermophoresis and Brownian impact
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Cogeneration systems of solar energy integrated with compressed air energy storage systems: A comparative study of various energy recovery strategies Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-22 Feifei Cui, Dou An, Shiyang Teng, Xixiang Lin, Donghe Li, Huan Xi
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Thermo-solutal dual diffusive flow of chemically reactive magneto couple-stress nanomaterial capturing robin conditions, transpiration and thermal generation/sink Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-22 M. Adil Sadiq, M. Waqas, M.S. Amjad, Taha Aziz, Haitham M.S. Bahaidarah
Nanomaterials have attracted extensive relevance from researchers and scientists around the globe because of their unique thermo-physical features and ample potential advantages and utilizations in crucial areas, for illustration, biomedicine, electronics, energy, vehicles and aerospace. This attempt accounts magnetohydrodynamics and chemical reaction consideration in couple-stress nanomaterial confined
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Thermal performance of Oldroyd-B hybrid nanofluid in solar energy-based water pumping systems and entropy generation minimization Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-22 A.M. Obalalu, M. Asif Memon, S. Saleem, A. Abbas, O.A. Olayemi, Mohamed R. Ali, R. Sadat, A.S. Hendy
The growing need for reliable energy supply to enhance productivity in industrial and residential sectors underscores the importance of conserving solar energy. This can be achieved through measures such as optimizing solar collector coatings and optical heat processes. The environmental risks posed by fossil fuels, like coal and diesel, for electricity generation, further highlight the urgency of
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Visually activated sprinklers applied in atria to mitigate the interaction of water spray with the smoke layer Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-22 Chih Kuo Chiu, Yew Khoy Chuah, Yang-Cheng Shih
This research investigates the fire suppression effectiveness of sprinklers in a large atrium of a public transport hub in Taipei, Taiwan, during a fire using FDS. The thermally-activated sprinkler had the shortcoming of delayed activation, with a thick smoke layer accumulating at the ceiling. Thereafter, the interaction of sprinkler spray with the thick smoke layer would cause a large amount of smoke
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Experimental study on heat transfer rules and thermal damage of steel-concrete-steel tunnel elements in fires Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-22 Dandan Zhang, Jianzhong Chen, Mengjun Wu, Peng Cao, Wenliang Jin
In this paper, internal temperature field, heat transfer forms, and macroscopic thermal damage of steel-concrete-steel tunnel elements under three thermal insulation schemes were investigated by conducting fire tests under RABT standard fire curve. The results show that steel shell temperature and internal temperature have distinct phases over time. There is a significant temperature gradient in vertical
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Theoretical and numerical investigation of the carreau fluid model during a non-isothermal roll coating process: A comparative study Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-22 Fateh ali, Yanren Hou, Xinlong Feng, M. Zahid, M.A. Rana, Basma Souayeh
Background The roll-coating process plays an important role in many industries for its practical applications, such as paint, PVC-coated fabrics and plastic industries. Roll coating is commonly used to put thin coating films over continuous substrates such as foils and papers. There are several roll-to-roll coating methods, including forward and roll over web. However, the reverse roll coating study
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Numerical approach for the modified heat transport process under improved Darcian and nonlinear mixed convective effects Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-22 Aisha Anjum, Alhafez M Alraih, khalda Mohamed Ahmed Elamin
Analysis regarding heat transport subjected to non-Darcian media has increased in science and technological utilization. Typical applications comprise grain storage, nuclear waste discarding, production of crude oil, pollution in groundwater, porous insulation, and several others. This motivates us to demonstrate the heat transport phenomenon in the viscous fluid's flow deformed by a linearly stretchable
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Study on smoke flow characteristics in immersed tunnel fires with lateral centralized exhaust: Considering the effect of the slope Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-21 Yuyang Ming, Guoqing Zhu, Lu He, Yuhang Zhou, Xin Liu, Xinyu Wang, Guangyuan Wang, Jinhu Ding
In the case of fires in inclined immersed tunnels, smoke flow patterns differ from those of horizontal tunnels, and require a unique approach to lateral centralized smoke exhaust. In this study, we propose a prediction model for the exhausted mass flow rate near each vent and use Fire Dynamics Simulator (FDS) to analyze the flow field and components. Our findings indicate that temperature and smoke
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Thermal engineering of electronic cigarettes Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-20 Se´bastien Soulet, Carine Casile
Electronic cigarettes were developed to vaporise an e-liquid containing nicotine. In addition to chemical com-position, health and safety risks are associated with the power supply. The aim of this study was to determine the functioning limits using boiling correlations for the onset of nucleate boiling and critical-heat flux. These estimations are in contrast with the experimentally obtained values
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Effect of diameter, twist angle, and blade count on thermal-hydraulic performance of decaying twisted swirler Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-20 At-Tasneem Mohd Amin, Wan Azmi Wan Hamzah, Mohd Azmi Ismail
Inserting a decaying swirler into a heat exchanger has been shown to improve heat transfer with minimal effect on the friction factor. The study analyses the effect of diameter, twist angle, and blade count on the thermal-hydraulic performance of a Decaying Twisted Swirler (DTS) in a horizontally heated tube. The diameter, twist angle, and DTS's blade count are examined for 13.5 mm–15.5 mm with a 0
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Experimental study on fire characteristics of sidewall fires in a long-narrow compartment with multiple lateral openings Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-20 Min Peng, Yuyang Ming, Zhenkun Wu, Xiangxiao Pan, Yuelei Pan, Xinyu Wang, Guoqing Zhu
This experimental study delves into the fire characteristics within a long and narrow compartment equipped with multiple lateral openings. The investigation encompasses aspects such as radiant heat flow, temperature distribution, and smoke layer height. The presence of lateral openings introduces asymmetry in suction, resulting in augmented radiative heat flow on the rear side of the fire source compared
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Oscillatory and transient role of heat transfer and magnetic flux around magnetic-driven stretching cylinder under convective boundary conditions Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-20 Zia Ullah, Mohammed Alkinidri
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Temperature distribution in tumour tissue during targeted destruction by heat: A hyperbolic bioheat equation approach Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-22 Mir Aijaz, Javid Gani Dar, Ibrahim M. Almanjahie, Fatimah Alshahrani
Thermotherapy is a frequently used treatment to destroy malignant tumour. The procedure is carried-out using various techniques like radio frequency, laser, focused ultrasound, and microwaves to elevate the desired temperature at targeted tissues. However, it becomes indispensable to note that the impact of the high temperatures also expands to the peripherals of the targeted tissues and can harm the
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Influence of Chemical reaction and heat generation/absorption on Unsteady magneto Casson Nanofluid flow past a non-linear stretching Riga plate with radiation Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-16 Dharmendar Reddy Yanala, Shankar Goud Bejawada, Kottakkaran Sooppy Nisar
The use of Casson fluid is of considerable importance in the manufacturing of pharmaceutical products, including the incorporation of china clay and biological fluids such as synovial liquids. Therefore, the primary objective of this work is to examine the characteristics of the Casson fluid flow. The Casson fluid is a non-Newtonian model often used to analyze the unsteady magnetohydrodynamic (MHD)
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Improving the efficiency of solar-driven trigeneration systems using nanofluid coolants Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-16 Bader Alshuraiaan
This article provides a technical and economic assessment of the currently available trigeneration and cogeneration plants to produce heat, vapour, electricity, and cold. A thermodynamic analysis of a trigeneration plant that uses a solar collector as a heat source has been carried out. The results of experimental studies have shown the possibility of reducing the cost of the refrigeration cycle to
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Thermohydraulic performance of hybrid ribs pattern combining V and arc shape ribs in solar air heater Exp. Heat Transf. (IF 3.5) Pub Date : 2023-09-20 Tabish Alam, Deepak Gupta
Solar energy is a limitless and ecological-friendly renewable energy source, which can be utilized for varieties of application ranging from heating/cooling, power generation, drying, and in heat-p...
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Combine influence of charged particles and dust particles in tri-cross hybrid nanomaterials on 3D surface via GFET Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-19 Hua Bian, Umar Nazir, Mohamed Ayadi, Muhammad Sohail, Kanit Mukdasai, Ahmed M Hassan, Maria A. melia E. Damian
Nanoparticles are used in many industrial processes due to their wider applications. The current inspection deals the utilization of nanoparticles to boost thermal efficiency. This research reports the inclusion of nanoparticles and dust particles for the flow of tri-hybridized nanofluid with thermal transport in a stretchable porous sheet with Hall and Ion slip contribution. The mechanism of thermal
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Influence of obstruction’s unilateral length on flow and heat transfer performance of micro-channel heat sinks with flow obstructions Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-18 Jvliang Han, Guangming Guo, Chen Pu, Chen Zhang
As the density and integration of electronic equipment continue to increase, it becomes necessary to build micro-channel heat sinks with more efficient cooling effects to solve the heat removal issue. This paper proposes a series of obstructions established on a smooth water-cooled micro-channel and analyzes the heat transfer and flow performance from the viewpoint of fluid dynamics. By adjusting the
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Efficiency estimation and hardware implementation of solar PV module system assisted by using surface plasmon resonance sensor Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-15 Vikash Kumar, Sanjeev Kumar Raghuwanshi
This article presents a multi-mode approach for controlling and optimizing the efficiency of solar photovoltaic systems, as well as for analyzing the response output of optical sensing systems. Solar energy has been detected efficiently in this paper using a surface plasmon chip. Initially, the dual axis tracking system was designed and manufactured according to the standard procedure outlined in the
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Optimization researches on the cooling-down process of the linde-hampson refrigeration system for a high-low temperature test chamber Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-15 Jingpeng Zhang, Kangli Bao, Qihang Chen, Wenxin Zhang, Lei Dong, Zhenzhen Zheng, Qin Wang
This paper focus on the cooling-down performance of the LHRS for a high-low temperature test chamber, and proposed a new method to optimize the cooling-down process of the LHRS based on a quasi-steady-state simulation model to investigated the optimal MR concentration and the shifting strategy of suction pressure during the cooling-down process. Targeted on the maximum cooling capacity, the optimal
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Performance analysis of a diesel engine using margosa oil ethyl ester-based biodiesel with diethyl ether as an oxygenated additive Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-16 Ganesan Manikandan, Rajendran Prabakaran, Palanisamy Dhamodharan, Sung Chul Kim, George Godwin Joshuva, Mariyappan Boopathi, Chinnasamy Jegadheesan
In this study, the effect of Margosa oil ethyl ester (MOEE) with oxygenated additive Diethyl ether (DEE) on the thermal performance, combustion, and emission characteristics of a direct-injection compression ignition engine (CIE) was examined. Experiments were performed under various engine loadings at a constant speed of 1500 rpm. Two-step transesterification process was followed for producing MOEE-based
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A thermal case study of three dimensional MHD rotating flow comprising of multi-wall carbon nanotubes (MWCNTs) for sustainable energy systems Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-16 Abdullatif A. Gari, Nazrul Islam, Sakeena Bibi, Aaqib Majeed, Kashif Ali, Wasim Jamshed, Kashif Irshad, Sohail Ahmad, Sayed M. El Din
The carbon nanotubes (CNTs) possess unique properties due to their structural mechanism. The CNTs comprise of exceptional electrical, mechanical and thermal attributes. This paper aims to interpret the correlation of carbon nanotube nanoparticles with motile microorganisms in a rotating magnetohydrodynamic flow with respect to slip as well as convective boundary conditions. Multi-wall carbon nanotubes
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Heat transfer of single-phase spray cooling on heated vibrating surfaces Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-16 Xinwen Chen, Aimin Du, Zhaohua Li, Kun Liang, Xiang Wang, Meng Zhang, Yucheng Wang
Effective vibration control has potential to enhance convective heat transfer. However, the precise heat transfer mechanism of single-phase spray cooling under vibration remains elusive. This study aims to elucidate this mechanism by establishing a closed-loop system for vibrating surface spray cooling. Various vibration parameters, including vibration Reynolds number (Rev), dimensionless acceleration
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Supercritical CO2 compressor operation near stall and surge conditions Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-15 Yongju Jeong, Gihyeon Kim, In Woo Son, Seungkyu Lee, Jeong Ik Lee
Instabilities such as stall and surge have been widely studied in open loop gas turbine system for several decades. However, researches on instabilities in a closed loop are limited. Especially, no experimental investigation in a supercritical CO2 compressor has been performed thoroughly before. An integral test loop equipped with a turbo-alternator-compressor using active magnetic bearing was utilized
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Influence of dislocations on equilibrium stability of nonlinearly elastic cylindrical tube with hydrostatic pressure Contin. Mech. Thermodyn. (IF 2.6) Pub Date : 2023-09-18 Evgeniya V. Goloveshkina, Leonid M. Zubov
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Experimental investigation of entropy generation in a pipe heat exchanger with turbulence generator inside and on the outside Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-17 Ganesh S. Dhumal, Sanjay N. Havaldar
The thermal performance of a pipe heat exchanger can be improved with the use of turbulator inserts. This is accompanied with a drop in pressure because of secondary swirl flow creation in the exchanger. A number of experiments were performed to find the entropy formation with twisted tape inserts inside a tube and helical ribs over the outside of a tube heat exchanger. A counter flow system with water
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Numerical study on gas temperature and smoke control in blind roadway fires Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-17 Jingxin Wang, Baolin Qu, Chao Li, Laisheng Huang, Yuexuan Fu, Cheng Chang, Bing Wu
In this study, smoke movement characteristics and smoke temperature in the blind roadway and the connected main roadway were mainly investigated numerically. The outcomings indicate that as the fire source gradually moves away from the heading face, the flame tilts from the heading face to the portal of the blind roadway. The gas temperature in the blind roadway and the downstream of the main roadway
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Conservation of architectural heritage: Innovative approaches to enhance thermal comfort and promote sustainable usage in historic buildings Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-15 Ho Hyeon Jo, Hyeonseong Yuk, Yujin Kang, Sumin Kim
Heritage architecture, which considers the local climate, building materials, and construction methods, can contribute to the energy efficiency and sustainability of buildings. Retrofitting strategies can be applied to existing buildings to improve their energy performance while maintaining or enhancing their thermal comfort. This study involved an analysis of the indoor environment status at the Yonsei
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Analytical investigation of solar parabolic trough receiver with multiple twisted tapes using exergy and energy analysis Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-13 Sashank Thapa, Raj Kumar, Khusmeet Kumar, Sushant Samir, Daeho Lee, Tej Singh
Exergy analysis is an important thermodynamic approach to studying the system's actual output, considering all losses. The present study is an analytical approach to calculating the thermal and exergetic efficiencies of the parabolic trough receiver using MATLAB R2018a simulation software. These efficiencies are evaluated considering temperature rise characteristics and parametric design factors. The
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Effects of electric field on vapor–liquid equilibrium of binary mixture Contin. Mech. Thermodyn. (IF 2.6) Pub Date : 2023-09-16 Han Guangze, Li Xinyu
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Empirical study for Nusselt number optimization for the flow using ANOVA and Taguchi method Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-16 B. Nagaraja, Felicita Almeida, Yousef Ali, Pradeep Kumar, A.R. Ajaykumar, Qasem Al-Mdallal
ANOVA and Taguchi is an optimization tool used to find the optimal combination to achieve the highest heat transmission rate for a Casson-Carreau nanofluid flow over a curved surface. Exponentially generating heat, thermal radiation, Joule heating, chemical reaction along with velocity slip, and Stefan blowing peripheral conditions are employed for the current investigation. The rate of heat and mass
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Central composite design (CCD)-Response surface methodology (RSM) for modeling and simulation of MWCNT-water nanofluid inside hexagonal cavity: Application to electronic cooling Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-16 Jianfeng Wang, Shan Ali Khan, Sumeira Yasmin, Mohammad Mahtab Alam, Haihu Liu, Umar Farooq, Ali Akgül, Ahmed M. Hassan
Purpose In application of hexagonal shapes, engineers and researchers use mathematical modeling, computational fluid dynamics (CFD), and experimental techniques to study natural convection inside hexagonal cavities and improve the design and efficiency of engineering systems. The exploration of fluid performance in hexagonal cavity has been an important problem from the earlier in the fluid mechanics
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Exergy-economic analysis of a hybrid combined supercritical Brayton cycle-organic Rankine cycle using biogas and solar PTC system as energy sources Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-15 Ahmed Alghamdi, Joffin Jose Ponnore, Ahmed M Hassan, Sultan Alqahtani, Sultan Alshehery, Ali E Anqi
Environmental negative impacts of the fossil fuels and intermittent feature of the renewable energies have made their hybrid configurations as a potential solution to overcome their both weaknesses. This research focuses on exergetic, and economic evaluation of a novel hybrid combined supercritical Brayton Cycle-Organic Rankine Cycle in which Solar PTC system and Biogas are considered as the energy
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Thermal decomposition characteristics and thermal safety performance evaluation of HAN-based propellant under different external environmental stimulations Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-14 Limin Kang, Feiyang Xu, Jingping Liu, Xingyu Shao, Lin Jiang, Yimin Luo, Haolong Wang, Jihong Shan, Weimin Cong, Chenguang Zhu, Sen Xu
This research aims to investigate thermal characteristics and assess thermal hazards of hydroxylamine nitrate (HAN)-based liquid propellant using a combination of accelerating rate calorimeter and high-pressure differential scanning calorimetry. Adiabatic experiments revealed that the exothermic reaction initiated at 115.7 °C and a rise sharply was at 128.4 °C with a maximum self-heating rate of 164
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Proposal of a double ejector-two flash tank absorption refrigeration cycle: Energy, exergy and thermoeconomic evaluation Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-14 A. Dhahi Gharir, L. Garousi Farshi
This research presents the proposal of a double ejector-two flash tank absorption refrigeration cycle, in which vapor and liquid ejectors are implemented simultaneously before the condensers and absorbers components. For the vapor ejector simulation, the shock circle approach is used. The internal environment of the vapor ejector, including the chocking phenomenon and the irreversible shock process
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Stability scrutinization and model development for mixed convective non-Newtonian hybrid nanomaterial flow in thermal system over a vertical shrinking surface Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-16 Latifah Falah Alharbi, Anuar Ishak, Umair Khan, Ioannis E. Sarris, El-Sayed M. Sherif, Aurang Zaib, Ahmed M. Hassan
The development of a better extremely high-efficiency coolant classified as nanofluid for numerous engineering and industrial technologies has been made possible by recent advancements in nanotechnology. In this work, we investigate the impression of an irregular heat generation or heat absorption on the improvement of heat transfer of Williamson hybrid nanoparticles composed of water-based Ag and
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Improved modeling of Janus membrane considering the influence of hydrophilic layer characteristics J. Non Equilib. Thermodyn. (IF 6.6) Pub Date : 2023-09-16 Noha M. Sayed, H. Noby, Kyaw Thu, A. H. El-Shazly
Some of the previous investigations neglect the mass transfer contribution of the hydrophilic layer for modeling the Janus membrane that is used for direct contact membrane distillation (DCMD). This work studies the impact of adding such resistance on the performance of the DCMD, especially on the temperature polarization coefficient (TPC), thermal efficiency, and permeate flux. The commercial software
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Artificial neural network modeling of mixed convection viscoelastic hybrid nanofluid across a circular cylinder with radiation effect: Case study Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-11 Syed M. Hussain, Rahimah Mahat, Nek Muhammad Katbar, Imran Ullah, R.S. Varun Kumar, B.C. Prasannakumara, Wasim Jamshed, Mohamed R. Eid, Waqar A. Khan, , Rabha W. Ibrahim, Sayed M. El Din
As a result of its use in the manufacturing and construction industries, research on the flow of nanofluid is rather well-known among academics and professionals in related fields. It is helpful for electrical equipment to utilize it for cooling reasons, which has shown promising results in terms of reducing energy use. As a result, the primary objective of this research is to inspect the impacts that
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Closed loop liquid cooling of high-powered CPUs: A case study on cooling performance and energy optimization Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-13 F.M. Naduvilakath-Mohammed, R. Jenkins, G. Byrne, A.J. Robinson
This case study presents an experimental investigation of closed loop liquid cooling of CPUs. The cooling system implements a pumped liquid supplying a cold plate fixed to the emulated CPU heat source and a remote Air-Cooled Heat Exchanger (ACHE). The Hybrid Liquid-Air (HLA) system employs 25% v/v Arteco-Freecor with distilled water solution as the primary coolant, and air as the secondary coolant
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Performance analysis of an isothermal piston in the case of air compression Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-11 Teng Ren, Wei-Qing Xu, Guan-Wei Jia, Mao-Lin Cai
A critical aspect for isothermal compression is the rapid transfer of heat, which also represents a key challenge. The heat transfer and resistance characteristics of an isothermal piston were examined through a dimensionless analysis, and the findings were compared with the experimental results. Two parameters, Ka and Xu, were established in the dimensionless model. Ka is an index reflecting the heat
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Experimental study of the thermal characteristic of a double tube heat exchanger with tapered wire coil inserts using PCM-dispersed mono/hybrid nanofluids Exp. Heat Transf. (IF 3.5) Pub Date : 2023-09-14 Sumit Kr. Singh, Vivek Kumar, Amit Kumar, Sujeet Yadav
ABSTRACT An experimental study involving tapered wire coil inserts in a double-tube heat exchanger using water-based phase change material (PCM)-dispersed mono/hybrid nanofluids is conducted. The effects of the wire coils (WC) with nanofluids on the hydrothermal performance of this system are studied for different coil arrangements: converging wire coils (CWC), diverging wire coils (DWC), and converging-diverging
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Computational assessment of MHD Carreau tri-hybrid nano-liquid flow along an elongating surface with entropy generation : A comparative study Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-09 Susmay Nandi, Zahoor Iqbal, Mohammed Alhagyan, N. Ameer Ahammad, Nafisa A.M. Albasheir, Ameni Gargouri, Sharifah E. Alhazmi, Sayed M. Eldin
This research looks at the incompressible, viscous, steady-state laminar stagnation-point-flow of a Carreau ternary-hybrid nano-liquid towards a convectively heated expanding surface, taking into account first-order slippage and Ohmic dissipation. Viscous dissipation and the effects of Lorentz forces are also considered. It is discussed how thermal radiation and heat absorption/generation contribute
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Numerical study on temperature field in the gob under different cooling control measures Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-11 Hao Wang
The temperature and flow fields of the gob area are quantified in this paper. Firstly, a mathematical model for multi-physical coupling in the gob was established. The on-site test of Daqiang Coal Mine was conducted without injecting nitrogen, which verified the effectiveness of the model. The cooling effect of the nitrogen injection decreases as the distance between the air inlet side and the working
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Cooling pitch cabinets in wind turbines using a pulsating heat pipe: A case study Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-12 Yang Gao, Zhiming Xu, Endi Zhai, Kunfeng Liang, Ran Zhao, Hailong Li, Lei Wang, Shengchun Liu, Xueqiang Li
As the electric capacity of wind turbine increases, heat dissipation in pitch cabinets becomes challenging owing to the limited space and rotating conditions. To cool down the pitch cabinet more effectively and allow heat dissipation, we designed and implemented a pulsating heat pipe (PHP) in this study. We designed PHP parameters and conducted performance tests to compare the cooling performance of
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Spacecraft smart radiation device with near-zero solar absorption based on cascaded photonic crystals Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-09 Biyuan Wu, Qianjun Mao, Hongju Li, Haotuo Liu, Xiaohu Wu, Xiqiao Huang
Smart radiation device (SRD) for spacecraft based on thermochromic material vanadium dioxide (VO2) attracts increasing interest due to its ability of self-adaptive emission regulation. However, the spacecraft SRD is constrained by the high solar absorption at a high temperature and low emission tunability in practical applications. In this paper, a SRD is proposed for spacecraft thermal control, which
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Performance comparison of PTCs with nanoparticles in water and nanoparticle in thermal oil Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-09 Y.-R. Galindo-Luna, H. Sánchez-Mora, G. Espinosa-Paredes, É.-G. Espinosa-Martínez
The use of nanoparticles to improve the thermal efficiency of PTCs has become a popular area of research. In this study, we present a comparative analysis of the effects of nanoparticles on the thermal performance of PTCs using water and thermal oil as heat transfer fluids. To obtain accurate temperature estimates, we developed a mathematical model that considers heat transfer in both axial and radial
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A generalization of Jeffrey-Hamel problem to Reiner-Rivlin model for energy and thermodynamic analysis using Keller-Box computational framework Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-09 Sohail Rehman, Fahad S. Almubaddel, Y.M. Mahrous, Fares A. Alsadoun, Amr S. Abouzied
This study addresses the heat transport and irreversible mechanisms associated with energy and frictional losses in the Jeffery-Hamel flow of a non-Newtonian fluid adapting the Reiner-Rivlin model. The Reiner-Rivlin model is frequently used to tackle the impact of yield-stresses among the multiple rheological models suggested for constructing the flow of yield-stresses materials. The non-creeping flow
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Numerical analysis on combustion characteristics of diffusion jet flame under different gravity environments Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-09 Yang Gao, Yuling Dou, Changfa Tao, Peixiang He, Xiao Zhang, Xin Huang, Xiaomeng Zhou
To study the combustion characteristics of turbulent jet flames under different gravity environments, the centerline temperature distribution curve and air entrainment rate of turbulent jet flame from microgravity to hyper gravity was carried out by CFD simulation. Five different gravity values have been considered. The simulation results show that the flame temperature decreases with the increase
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Significance analysis of the factors influencing the strength of the frozen soil-structure interface and their interactions in different phase transition zones Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-09 Zuoyu Guo, Xiangtian Xu, Yongtao Wang, Caixia Fan, Aiting Sang, Lingxiao Fan, Shuqin Hao, Zhijun Yan
The freezing strength of the contact interface between foundation soil and infrastructure has been a key and difficult problem in the study of frost jacking of piles in cold regions; previous studies have focused on the influence law of experimental factors on freezing strength, and there are few studies on the significance of the effects of factors and their interactions on the freezing strength in
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Entropy analysis of Cu-Al2O3 based hybrid and Cu based mono nanofluid flows through porous medium: A comparative study Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-12 S. Jena, M.K. Mishra
The motive of this research article, is to present a comparative study of entropy generation for a system of MHD mixed convection non-Darcy porous medium flow of mono and hybrid nanofluids over a melting surface. Darcy–Forchheimer model for the flow through porous medium is employed to formulate the problem under consideration. The dimensional momentum and heat equations governing the flow are transformed
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Modeling of blood flow in the framework of micropolar theory Contin. Mech. Thermodyn. (IF 2.6) Pub Date : 2023-09-10 Anastasiya E. Vilchevskaya, Elena N. Vilchevskaya, Wolfgang H. Müller, Victor A. Eremeyev
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Experimental investigation on heat transfer characteristics of upward flow boiling in a vertical narrow rectangular channel Exp. Heat Transf. (IF 3.5) Pub Date : 2023-09-13 Cheng Jin, Leren Tao, Yiwei Ju, Xiefei Zhao, Shengjie Gu, Lihao Huang
ABSTRACT Heat transfer experiment on water flow boiling was carried out in the upward direction under atmospheric pressure through a narrow rectangular channel heated on one-side by vapor having a gap of 2.75 mm, a width of 250 mm, and length of 1400 mm. The heat transfer coefficient and thermal hydraulic thresholds of the flow boiling in forced convective flow, such as the onset of nucleate boiling
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Experimental research on ignition characteristics of hot jet matched with single-channel wave rotor combustor Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-13 Erlei Gong, Tianhao Lan, Yanna Hao, Jianzhong Li
An experimental system employing hot jet ignition was used to investigate the effects of hot jet equivalence ratio, jet flow rate, and premixture equivalence ratio on the ignition and flame propagation characteristics of a single-channel wave rotor combustor. The study revealed that the hot jet equivalence ratio and jet flow rate exert a notable influence on the initial flame front position. The ignition
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Loosely coupled analysis strategy for melt-ablation modeling of thermal protection material in supersonic gas-particle two-phase impingement flow Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-12 Chong-You Lai, Tzong-Shyng Leu
In this study, a two-way fluid-thermal-ablation loosely coupled analysis strategy is used to investigate the melt-ablation process of the copper specimen plate in the scaled ducted launcher. By coupling a discrete-phase model for simulate the supersonic gas-particle two-phase exhaust plume impingement flow field of a small scaled solid propellant rocket and a solidification/melting model for simulate
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Evaluation of heat transfer transition for nanofluids within an enclosure based on magnetic field angles Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2023-09-12 Wen-Ken Li, Chuan-Chieh Liao
The present simulation deals with Magnetohydrodynamics (MHD) with focus on heat transfer attributes with the addition of nanoparticle volume concentration (NVC). Influences of the governing parameters, including natural convection strength of Rayleigh number (Ra), magnetic field intensity of Hartmann number (Ha), and magnetic directions with a complete period of γ = 0°–180° are studied. The results