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Two-field mixed hp-finite elements for time-dependent problems in the refined theories of thermodynamics Contin. Mech. Thermodyn. (IF 2.6) Pub Date : 2024-03-26 Balázs Tóth, Zsombor Molnár, Róbert Kovács
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Modeling of sodiation-induced deformation of Sn anode based on the stress-driven nonlocal integral elasticity Contin. Mech. Thermodyn. (IF 2.6) Pub Date : 2024-03-25 Zuoquan Zhu, Mengmeng Lv, Zongchao Liu, Jing Wan
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An experimental investigation on the influence of Strouhal number and amplitude on the flow and heat transfer behavior of synthetic jet impingement Exp. Heat Transf. (IF 3.5) Pub Date : 2024-03-20 Pawan Sharma, Dnyanesh Mirikar, Santosh K. Sahu, Harekrishna Yadav
Here, tests are performed to analyze the effect of Strouhal number (St) and amplitude on thermo-fluid characteristics of synthetic jet (SJ) impingement for varied range of Reynolds numbers (Re = 30...
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Heat conduction in multi-component step-wise FGMs Contin. Mech. Thermodyn. (IF 2.6) Pub Date : 2024-03-22 Olga Szlachetka, Ivan Giorgio
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Proposing a procedure for multi-objective optimization of cascade thermoelectric coolers to achieve maximum cooling capacity and COP J. Non Equilib. Thermodyn. (IF 6.6) Pub Date : 2024-03-22 Amin Hadidi
A novel approach is proposed for optimal designing two-stage thermoelectric coolers using the biogeography-based optimization algorithm. For the comprehensiveness of the research, both types of two-stage coolers, including electrically serial and separated stages, have been investigated. Using the proposed procedure, first by selecting the most important performance parameters of the cooler, i.e. COP
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An innovative end-to-end PINN-based solution for rapidly simulating homogeneous heat flow problems: An adaptive universal physics-guided auto-solver Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-19 Yijie Zhao, Donghe Li, Chun Wang, Huan Xi
In contemporary heat flow computations, the widespread application of deep learning, specifically Physical Informed Neural Networks (PINN), has been noted. However, existing PINN methods often exhibit limited applicability to specific operational conditions and are hindered by prolonged training times, rendering them unsuitable for engineering scenarios requiring frequent changes in operational parameters
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Poroacoustic front propagation under the linearized Eringen–Cattaneo–Christov–Straughan model J. Non Equilib. Thermodyn. (IF 6.6) Pub Date : 2024-03-19 Vittorio Zampoli, Pedro M. Jordan
Employing the Laplace transform and its properties, we investigate the evolution of the coupled thermal and fluid-acoustic waveforms that arise in a signaling problem under the Eringen–Cattaneo–Christov–Straughan model of poroacoustic phenomena. Assuming a Heaviside temperature input, we determine the effects of what we term the “Eringen coefficient” by examining the propagation and evolution of the
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The wall effect in a plane counterflow channel J. Non Equilib. Thermodyn. (IF 6.6) Pub Date : 2024-03-19 Luca Galantucci, Michele Sciacca
In this paper, we study the influence of the boundary conditions of the velocity fields in superfluid helium counterflow experiments. To make progress, we perform numerical simulations where we allow a slip velocity of the viscous component at the walls, and observe how this impacts on velocity fields and density profiles of distribution of quantized vortices. We conclude that the presence of a slip
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Experimental investigation on heat transfer and friction factor characteristics for novel hybrid roughness used in solar air heater Exp. Heat Transf. (IF 3.5) Pub Date : 2024-03-18 Shuchi Chaurasia, Ankur Dwivedi, Muneesh Sethi, Ajoy Debbarma, Varun Goel
The influence of heat transfer and frictional characteristics of air that is turbulent and transitting rectangular channel textured by novel hybrid roughness (multi-V shaped ribs combined with hemi...
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Mesosilicate materials for environmental applications: Adsorption separation analysis via hybrid computational and machine learning tools Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-18 Yu tong Sun, Li heng Xia, Ya bo Zhang
In this extensive analysis, we delve into the utilization of advanced hybrid model for molecular separation description via mesoporous materials. The process considered here is adsorption which is utilized for molecular separation in liquid solution. Data for adsorption are obtained in terms of solute concentration by solving mass transfer equations numerically. Then, the data is used for training
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Study of hydrogen injection strategy on fuel mixing characteristics of a free-piston engine Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-18 Zhaoju Qin, Fangfang Liu, Hanbo Zhang, Xingda Wang, Chenyang Yin, Weihong Weng, Zhen Han
The formation of the gas mixture in the cylinder has a significant effect on the combustion and emission of the engine. The main difference between a conventional engine and a free piston engine is that the piston movement mode is different. Therefore, a new coupled iterative method is adopted in this paper to study the injection position and duration of hydrogen fuel in a free piston engine where
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A case study of techno-economic and environmental analysis of college rooftop for grid-connected PV power generation: Net zero 2050 pathway Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-18 Ilter Sahin Aktas, Salih Ozenc
In this study, a grid-connected solar photovoltaic plant (SPV) is designed, evaluated and analysed to meet the energy consumption of the College of Science and Technology in Siirt province, Turkey. The comprehensive financial and technical statistics in relation to parameters utilised within the system are presented alongside thorough economic and environmental evaluations. The design, economics, and
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Thermo-environmental multi- investigation and ANN-based optimization of a novel heat integration criteria system integrated with a marine engine generating liquefied hydrogen Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-18 Tirumala Uday Kumar Nutakki, Mohammed A. Alghassab, Ashit Kumar Dutta, Barno Sayfutdinovna Abdullaeva, Salem Alkhalaf, Fawaz S. Alharbi, Raymond Ghandour, Zaher Al Barakeh, Salah Knani
Marine transportation is a significant contributor to overall energy consumption among transportation sectors and is responsible for producing a considerable amount of greenhouse gases. A potential solution for alternative applications involves implementing combined heat integration, thereby enabling the production of additional utilities and mitigating emissions. The current work introduces an innovative
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Numerically analyzed of ternary hybrid nanofluids flow of heat and mass transfer subject to various shapes and size factors in two-dimensional rotating porous channel Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-18 Qadeer Raza, Xiaodong Wang, Hussein A.H. Muhammed, Bagh Ali, Mohamed R. Ali, Ahmed S. Hendy
This article examines the behavior of (Cu–AlO–TiO) nanoparticles with varying shapes and sizes regarding their flow and thermal performance. A ternary hybrid MHD model is developed to study rotating porous walls associated with permeable Reynolds numbers and NPs for a specific range of the volume friction and (2%–10%). Considering morphology effects, the expanding/contracting phenomenon for heat and
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Microflower-like Fe-Co-MOF with enhanced catalytic performance for decomposition of ammonium perchlorate and combustion of ammonium perchlorate-based composite propellants Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-18 Chenhe Feng, Baoyun Ye, Wangjian Cheng, Songchao Shi, Fengqi Zhao, Chongwei An, Jingyu Wang
Ammonium perchlorate (AP) serves as a crucial component in solid propellants. Enhancing its thermal decomposition with catalysts improves the combustion performance of solid propellants significantly. To enhance the catalytic performance of metal-organic frameworks (MOFs) on AP, this study controlled the morphology of MOFs by adding metal atoms, resulting in a Fe-Co-MOF catalyst with higher specific
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A comprehensive analysis of heat transfer in a heat exchanger with simple and perforated twisted tapes based on numerical simulations Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-18 Razvan Sedaghat, Kimia Mobarhan Dalili, Seyed Mostafa Hosseinalipour
One of the most important methods to promote heat transfer (HT) in a heat exchanger (HE) is to use a twisted tape (TT) inside tubes. Therefore, in this paper, the result of the effect of TTs on the Nusselt number (), and the performance coefficient of HEs in a laminar flow are investigated. plain tube (PT), simple TTs and perforated twisted tapes (PTTs) at 3 torsion ratio, blade numbers (N) 2, 4, 6
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Peridynamic simulation of creep deformation and damage Contin. Mech. Thermodyn. (IF 2.6) Pub Date : 2024-03-17 Deepak Behera, Pranesh Roy, Erdogan Madenci
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Exact solution of one problem of imposition of large deformations in a compound slab with pre-deformed layers of incompressible nonlinear elastic micropolar material Contin. Mech. Thermodyn. (IF 2.6) Pub Date : 2024-03-16 V. A. Levin, K. M. Zingerman, A. E. Belkin
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Thermo-solutal convective conditions impact in dual stratified stagnation-point flow of second-grade (SG) fluid with chemical reaction Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-17 M. Waqas, M. Ashiq, M.S. Kausar, S.U. Khan, Hala A. Hejazi, Sherzod Abdullaev, Mohamed Medani
In various engineering and industrial utilizations, the heat-mass transportation concept has been rigorously witnessed, for illustration air conditioning of room, nuclear reactors cooling and abundant other realistic conditions. This scrutiny elaborates buoyancy-driven viscoelastic magnetized flow configured by stretched vertical surface. Heat-transfer effects are explored through Ohmic dissipations
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Regression and numerical treatment of micropolar fluid induced by the melting stretchable disk Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-17 A. Rauf, S.A. Shehzad, R. Kiran, F. Mustafa, Ijaz Ali, S. Khan, M.K. Siddiq
An incompressible two-dimensional laminar flow of micropolar fluid subjected to a stretched surface is examined. The steady-state thermally radiative flow experiences the influence of melting phenomenon. The dimensionalized flow model for axi-symmetric flow is governed through similarity variables. Runge-Kutta-Fehlberg (RKF-45) method is applied to the finalized non-linear governing equations to obtain
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Temporal numerical analysis of beeswax PCM melting in a cube geometry subjected to a constant wall temperature condition Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-16 H. Fayaz, S. Ramesh, Vijayanandh Raja, Emanoil Linul, Sher Afghan Khan, Mohammed Asif, Abdulrajak Buradi, Olusegun David Samuel
The ability of phase change materials (PCM) to store thermal energy has gained wide application area, like battery thermal management, solar water desalination and many other. The melting process of beeswax phase change material within the cube geometry with constant wall temperature (65 °C) boundary condition has been investigated using solidification and melting model. The fluid flow and heat transfer
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Numerical Approach for Induced MHD Sutterby Fluid Flow with Electro-osmosis's function for chemical reaction and heat dissipation across the Wedge Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-16 Azad Hussain, Naila Farooq, Ambreen Ahmad, Ayesha Saddiqa, Abdulsalam Seed Shflot, Muhammad Yousaf Malik
The primary focus of this article is on an electro-osmosis-based interpretation of the two-dimensional movement of an incompressible Sutterby nanofluid flow across a stretching wedge-shaped geometry. Thermal dissipation, double diffusivity, concentration and momentum association are also incorporated. Nanofluids are expected to improve the ability of heat-transfer fluids to convey heat more efficiently
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Effect of syngas recirculation in the pyrolysis zone on the rice husk gasification process using the downdraft reactor Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-16 Rudi Hermawan, Cahyadi, Adi Suryosatyo, Yohanis Tangke Tosuli, Hafif Dafiqurrohman
As one of the world's largest rice producers, Indonesia has an abundance of rice husk as a byproduct of rice milling. Rice husks were utilized to examine downdraft gasification with syngas recirculation system. This study attempts to produce better syngas than conventional downdraft gasifier. With an equivalency ratio of 0.20, syngas was recirculated into the reactor in the pyrolysis zone with valve
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Evaluation of droplet evaporation characteristics and its influencing factors in high-temperature gaseous environment Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-16 Na Pei, Jinxiu Zhao, Xinli Shi, Liansheng Liu, Xuanchen Liu
Droplet evaporation is widely present in nature and industrial production, involving heat and mass transfer between the droplet and the surrounding gas environment. This study investigates the evaporation of individual spherical droplets in a high-temperature gas environment under both stationary and forced convection conditions, using theoretical and numerical approaches. The results show that the
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Smart fin with automatic evaporation and regeneration for thermal management of high heat flux electronics Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-16 Shirui Pu, Yong Xia, Xin Qiu, Chongfei Lu
The high temperature of modern electronic devices poses great challenges to the safety and reliability of applications. Reasonable and effective control of device operating temperature for enhancing device performance and promoting the development of the electronics industry has a positive effect. Here, an innovative and efficient passive cooling technology is proposed to reduce the device temperature
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Effect of graphene nanoplatelets induced ethylene glycol/water mixture (50:50) fluid on lithium-battery cooling Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-16 Ashim Joshi, Raghav Sharma, Isha Acharya, Sailesh Chitrakar, Bivek Baral
Battery technology is the main driving force behind the shift towards emission-free transportation. However, a major obstacle to the widespread adoption of this technology is the need to maintain the battery's temperature at a standard of 27 °C. Traditionally, a mixture of ethylene glycol and water is circulated through the battery pack for cooling, but this method is not sufficient. By contrast, the
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Coal conversion to SNG: Thermochemical insights through kinetic-free modeling in entrained flow gasifier Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-16 Yindi Zhang, Shadrack Adjei Takyi, Qinghai Chen
In this study, a kinetic-free thermodynamic equilibrium model consisting of five units was developed to predict SNG production via coal gasification, using two distinct feeding technologies (SFT and DFT) and two coal ranks (BT and BL) in an entrained flow gasifier using Aspen Plus (V10), and comparing results with empirical data. The alignment between simulation outcomes and experimental observations
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Effect of air depletion in the preferential oxidation reactor and fuel depletion in a proton exchange membrane fuel cell system fueled by natural gas Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-16 Hwanyeong Oh, Yoon-Young Choi, Won-Yong Lee, Seok-Ho Seo, Si-Doek Oh, Ho-Young Kwak
This study estimates the steady-state performance of a proton exchange membrane fuel cell (PEMFC) under conditions of air depletion in the preferential oxidation reactor (PrOx) and fuel depletion at the anode, which has not been previously studied. Considering the detailed chemical reactions of the reforming process, the composition of the reformed gas at the anode inlet is determined using the temperature
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The effect of magnetic field on the heat transfer in the porous medium octagonal cavity with Cassini oval barriers Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-16 Hassan Roshani, Payam Jalili, Bahram Jalili, Irshad Ahmad, Ahmed S. Hendy, Mohamed R. Ali, D.D. Ganji
This article investigates the effect of Rayleigh numbers, Hartmann numbers, and magnetic fields on nanofluid flow behavior and heat transfer. The flow behavior has been analyzed based on the contours and values of the flow function and heat transfer based on the temperature distribution contours and local and average Nusselt number values. Since the effects of the magnetic field are an important parameter
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Convection flow of nano-encapsulated phase change material in wavy chamber with double sliding walls, flame-shaped heating source, and magnetic force Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-15 Aissa Abderrahmane, Naef A.A. Qasem, Abdeldjalil Belazreg, Yacine Khetib, Obai Younis, Kamel Guedri, Ibrahim Mahariq
This article aims to improve the convection flow within a two-dimensional chamber by utilizing nano-encapsulated phase change material (NEPCM). The chamber center contains a flame-shaped heating source, and the bottom wall is wavy. Forced convection occurs due to the motion of the chamber's side walls, while natural convection arises from the thermal gradient across the side walls. The Galerkin-finite
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Parameters effect and optimization on calciner for treating magnesium salt based on computational fluid dynamics Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-15 Menghui Zhang, Yongfeng Qi, Hui Dong, Meiting Wang, Wan Zhang, Wenchang Wu, Sheng Zhang
The magnesium salt Mg(NO)·2HO from laterite nickel ore nitric acid leaching process can be reused by thermal decomposition using calciner. To improve the performance of the calciner, a new numerical model integrating the gas-particle hydrodynamics and the particle pyrolysis reaction was established by Euler-Lagrange approach. In particular, the particle size variation caused by pyrolysis reaction was
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Thermodynamic, exergetic and environmental evaluation and optimization of a bio-fuel fired gas turbine incorporated with wind energy derived hydrogen injection Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-15 Azher M. Abed, Bhupendra Singh Chauhan, Hamdi Ayed, Abir Mouldi, Van Fang Lee, Ahmed Deifalla, Ibrahim Mahariq
The fluctuating nature of wind energy and shortage of biomass resources, as two types of renewables, can be fulfilled via their hybridization. In this respect, present research proposes a hybrid biomass/wind energy driven power generation framework based on combined gas turbine-Rankine cycle scheme. The gas turbine includes a reheat stage where the produced hydrogen is added to the combustion chamber
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Experimental study of gas composition in the equilibrium state of a light alkane combustion reaction Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-15 Zhenyi Liu, Zihao Xiu, Pengliang Li, Mingzhi Li, Yao Zhao, Tao Fan
Oil field-associated gas is typically a mixture of light alkanes. To ensure production safety, it is essential to investigate the combustion characteristics and the reaction mechanism of light alkane gas mixtures to uncover the underlying mechanisms of the combustion reaction. This paper investigates the equilibrium gas component concentrations resulting from the reaction of a gas mixture of methane
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An experimental case study of natural ventilation effects on the residential thermal environment and predicted thermal comfort in Kunming Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-15 Huai Chen, Xiang Ding, Rujian Li, Shuai Gong, Baihong Liu, Qiong Li, Wenfeng Gao
The use of natural ventilation for cooling in summer in mild climate areas can positively improve the indoor thermal environment and thermal comfort. In this paper, Kunming, China was chosen as a case to study experimentally the natural ventilation effects on the residential thermal environment and thermal comfort in mild climate rural areas. The effects of natural ventilation on the indoor thermal
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Variable properties reconstruction for functionally graded thermoelectroelastic cylinder Contin. Mech. Thermodyn. (IF 2.6) Pub Date : 2024-03-13 Alexander Vatulyan, Sergey Nesterov, Rostislav Nedin
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The influences of thermal relaxation time and varying thermal conductivity in thermoelastic media Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-14 Aatef D. Hobiny, Ibrahim A. Abbas
This study introduces a nonlinear analysis of the transient responses in a thermoelastic medium produced by a thermal shock. The formulations are presented based on a Green-Lindsay (GL) thermoelasticity model with two thermal relaxation times under varying thermal conductivity are included in the governing equations. The finite element process is employed to address the problem without resorting to
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Importance of thermophoretic particles deposition in ternary hybrid nanofluid with local thermal non-equilibrium conditions: Hamilton–Crosser and Yamada–Ota models Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-14 Munawar Abbas, Nargis Khan, M.S. Hashmi, Hammad Alotaibi, Husna A. Khan, Shahram Rezapour, Mustafa Inc
This article exhibits a brief study of magneto ternary hybrid nanofluid flow with thermophoretic particle deposition and porous medium based on the extended version of model, known as the Yamada-Ota and Hamilton Crosser models. Thermophoretic particle deposition, which is important in both aero-solution and electrical engineering, is one of the most fundamental methods for transferring small particles
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Performance evaluation of novel plate-type condenser for an absorption/adsorption refrigeration system: Experimental and CFD study Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-13 Syed Muhammad Ammar, Zaher Ramadan, Chan Woo Park
Plate heat exchangers are widely used in many industries, such as refrigeration and air conditioning. Traditionally, the condenser in an absorption system comprises a shell and tube heat exchanger. However, we have innovatively replaced the conventional tubes with chevron plates in this system. The following variables were measured: condensation pressure (5.75–7.00 kPa), wall subcooling (0.2–1.8 °C)
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Development of numerical code for mathematical simulating of unsteady solidification phenomena in existence of nanomaterial Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-13 Wajdi Rajhi, Noha M. Seyam, Hussein A.Z. AL-bonsrulah, Ziyad Jamil Talabany, Nasrin B.M. Elbashir, Nidal H. Abu-Hamdeh
This research zeroes in on improving the freezing process by synergistically employing a wavy wall and fins. To enhance cold penetration, the phase change material (PCM) is enriched with nanoparticles, and a single-phase model is adopted due to the low nanoparticle concentration. The numerical simulations leverage the Galerkin method and the validation procedure affirms the precision of the code, extensively
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Effects of film hole spanwise angle and diameter on flow and heat transfer of impingement/effusion cooling with crossflow diverters Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-13 Juan He, Kun Xiao, Haolong Li, Qinghua Deng, Hao Peng
This paper studies the blade cooling under the co-effect of external film extraction and internal impingement cooling with crossflow diverters. The influence of spanwise angle () and diameter () of film hole on flow and cooling performance are analyzed when the impingement jet Reynolds number ranges () from 15,000 to 45,000. From the results, if a row of film holes is set on the target surface of an
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Design and optimal coolant flow rate analysis of an annular water-cooled automotive exhaust-based thermoelectric generator Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-13 Weiqi Zhou, Xiao Tang, Jiahao Zhu
This paper introduces a design of an annular water-cooled automotive exhaust-based thermoelectric generator (TEG). A comprehensive numerical model of TEG system is established to investigate the relationship between automotive exhaust temperature and coolant flow rate. Through numerical simulations, it is demonstrated that the implementation of this device can effectively enhance the temperature uniformity
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Characteristics of natural convection heat transfer in composite cavity Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-13 Changkui Lei, Yaoqian Zhu, Suntong Qiu, Chengbo Wang, Ruoyu Bao, Cunbao Deng
In order to study the influence of the nature of the mining airspace on the natural convection heat transfer in the unventilated working face, we establish a numerical model of natural convection in a composite cavity containing porous media by CFD method. The effects of different Rayleigh numbers (Ra), porous media thicknesses, and porosities ε on the natural convection temperature and velocity fields
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Flow and thermal characteristics of Jeffrey nanofluid in the fixed and moving frames of reference with newly developed Reynolds model Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-13 Bushra Ishtiaq, Sohail Nadeem
Nanofluids with their excellent thermophysical properties strengthen the thermal performance of an ordinary fluid. Due to the efficacious thermophysical characteristics of nanofluids, the aim of the present study is to discuss the three distinct viscosity models for an incompressible Jeffrey nanofluid relative to its oscillatory oblique stagnation point flow. Three different viscosity models namely
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AI-Neural Networking Analysis (NNA) of Thermally Slip Magnetized Williamson (TSMW) fluid flow with heat source Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-13 Khalil Ur Rehman, Wasfi Shatanawi, Weam G. Alharbi, Taqi A.M. Shatnawi
The thermal case study is conducted by using artificial intelligence to examine the heat transfer traits in Williamson fluid flow with heat source and thermal slip effects. The thermal flow field interacts with the externally applied magnetic field and velocity slip is additionally considered at the surface. The flow is formulated in terms of energy and momentum equations. All inputs (Prandtl number
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Numerical study on nanofluid heat transfer and fluid flow within a micro-channel equipped with an elastic baffle Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-13 Tarek Bouzennada, Mehdi Fteiti, Badr M. Alshammari, Bilel Hadrich, Karim Kriaa, Chemseddine Maatki, Lioua Kolsi
In this study, the incorporation of a flexible baffle structure at the base of a microelectronic channel is examined to determine its impact on thermal and fluid dynamics. The investigation covers two configurations: case 1, where the heat source is situated at the top section of the microchannel, and case 2, with the heat source placed at the bottom. To cool the electronic component, a nanofluid consisting
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A numerical study of the effect of variable heat flux on the stability and thermal behavior of SARS-COV-2 structure: A molecular dynamics approach Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-13 Li Xiao, Ali Basem, Yuelei Zhang, Dheyaa J. Jasim, Soheil Salahshour, Z. Li, Davood Toghraie
One of the common methods is the molecular dynamics simulation which models the behavior of atoms and molecules. This paper used the molecular dynamics technique to simulate the behavior of SARS-COV-2 virus under variable heat flux conditions. By doing so, it can be observed how the virus structure responded to the changes in external heat flux and how this affected its stability. This paper studied
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Performance assessment and improvement of district cooling system: A case study of enhancing energy efficiency of hospital buildings Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-13 Xi Bai, Weidong Ma, Junjie Huang, Caihua Liang, Xiaosong Zhang
In addressing the performance degradation issue of district cooling systems, although various evaluation methods exist, they either neglect design objectives or focus on independent equipment, overlooking the synergies between devices. Therefore, the study establishes a comprehensive performance assessment framework, encompassing efficiency, environmental impact, economic factors, and technological
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Energy, exergy and sustainability analyses of nanoparticles added to fuels to reduce carbon footprint Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-12 Battal Doğan, Salih Özer, Erdinç Vural, Ahmet Fatih Haciyusufoğlu
In this study, experimental and thermodynamic analyses were used to investigate the use of fuel blends created by adding cerium oxide (CeO) and aluminium oxide (AlO) nanoparticles to diesel/heavy fuel oil (HFO) fuel blends in a compression ignition engine. In the study, a single-cylinder compression ignition engine was tested at four different engine loads at a constant engine speed of 3000 rpm. The
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A new heat transfer correlation based on flow patterns for hydrocarbon refrigerants condensation flow Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-12 Xianshi Fang, Guodong Qiu, Qian Li, Jie Chen, Weihua Cai
To accurately predict heat transfer coefficients for hydrocarbon refrigerants condensation flow in heat exchangers is imperative for designing efficient systems. While various studies have proposed numerous correlations for predicting heat transfer coefficients, some of these correlations are based on fitted experimental data and are limited to predicting specific conditions. The prediction accuracy
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Investigation of free convection in a wavy trapezoidal porous cavity with MWCNT- Fe3O4/Water hybrid nanofluid under MHD effects: Galerkin finite element analysis Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-12 Kamel Guedri, Abdel-Nour Zaim, S. Mohammad Sajadi, Dheyaa J. Jasim, Abderrahmane Aissa, Soheil Salahshour, Ahmad Almuhtady, Obai Younis, Sh Baghaei, Wael Al-Kouz
Our study focuses on numerically investigating natural convection within a three-dimensional trapezoidal cavity featuring a corrugated hot bottom wall, with a particular emphasis on enhancing heat exchange using a water-based hybrid nanofluid. Employing a steady-state regime assumption, the study considers laminar and incompressible three-dimensional flow. The Darcy-Forchheimer model is incorporated
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Adaptive thermal error prediction for CNC machine tool spindle using online measurement and an improved recursive least square algorithm Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-12 Xinyuan Wei, Honghan Ye, Gao Wang, Weidong Hu
Establishing models for predicting and compensating for spindle thermal errors is cost-effective and necessary to improve the accuracy of machine tools for smart manufacturing. However, the prediction performance of existing methods deteriorates significantly with dynamic working conditions of machine tools because training from static conditions leads to the inability to adapt to dynamic conditions
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Novel entropy generation and optimization for hybrid nanofluid flow via ribbed surface parabolic trough collector Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-12 Priyanka, Sunil Kumar, Anil Kumar, Tabish Alam, Md Irfanul Haque Siddiqui, Dan Dobrotă
This research paper focuses on the optimization of parameters for deformative receiver tubes to achieve prime choice of design for efficient energy absorption. The motivation of the current study lies in addressing the critical need for optimizing parameters of deformative receiver tube to obtain optimal design to enhance energy absorption efficiency in Parabolic Trough Solar Collectors (PTSC). Considering
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Experimental investigation and gray relational optimization of engine parameters to improve the output characteristics of an ammonia biodiesel powered dual fuel combustion engine Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-12 R. Elumalai, S. Sumathy, Ravi K, Mohammad Nishat Akhtar, Elumalai P V, Sher Afghan Khan, M. Satyanarayana Gupta, Mohammad Asif
An innovative approach to this research is to evaluate the effects of different concentrations of biodiesel with premixed ammonia energy in a dual-fuel combustion engine and determine the best operating conditions for optimal engine responses. Experimental results of a 40% ammonia energy premixing fraction with direct injection of a biodiesel blend of 30% (40%AEPF + B30) at 80% load improved brake
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Corrigendum to: Significance of entropy generation and the Coriolis force on the three-dimensional non-Darcy flow of ethylene-glycol conveying carbon nanotubes (SWCNTs and MWCNTs) J. Non Equilib. Thermodyn. (IF 6.6) Pub Date : 2024-03-12 Ikram Ullah, Tasawar Hayat, Arsalan Aziz, Ahmed Alsaedi
This corrigendum addresses some typographical mistakes and errors in published article “Significance of entropy generation and the Coriolis force on the three-dimensional non-Darcy flow of ethylene-glycol conveying carbon nanotubes (SWCNTs and MWCNTs)”. Corrections about some typographical errors and plots of g η $g\left(\eta \right)$ satisfying ambient condition in study (I. Ullah, T. Hayat, A. Aziz
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Effects of natural gas admission location and timing on performance and emissions characteristics of LPDF two-stroke engine at low load Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-11 Antony John Nyongesa, Jae-Hyuk Choi, Ji-Woong Lee, Jae-ung Lee, Seongwan Kim, Siljung Yeo, Jun-Soo Kim, Won-Ju Lee
Low-pressure gas-admission marine two-stroke engines have significant potential for reducing emissions in the shipping industry. However, they exhibit poor combustion quality under low-load conditions, leading to lower thermal efficiency and high levels of HC and CO emissions. This study numerically evaluated the impacts of the gas admission location and timing on engine performance and exhaust gas
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Thermal and mass exchange in a multiphase peristaltic flow with electric-debye-layer effects and chemical reactions using machine learning Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-11 Mohammad Alqudah, Arshad Riaz, Muhammad Naeem Aslam, Mehpara Shehzadi, Muhammad Waheed Aslam, Nadeem Shaukat, Ghaliah Alhamzi
The present investigation delves into the analysis of mass and thermal transmission during the peristalsis of a two phase flow of a Prandtl fluid, within a symmetric channel by considering entropy generation and minimization. The considered flow is examined by taking into account the impacts of electroosmotic effects through Electric Debye Layer (EDL) and chemical reactions followed by the lubrication
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Improving flow efficiency in micro and mini-channels with offset strip fins: A stacking ensemble technique for Accurate friction factor prediction in steady periodically developed flow Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-11 K. Chandan, K.V. Nagaraja, Fehmi Gamaoun, T.V. Smitha, N. Neelima, Umair Khan, Ahmed M Hassan
A novel machine-learning model for micro and mini-channel friction factor prediction is presented in this article. In recent years, periodic array offset strip fins in micro and mini channels have gained attention due to their compactness and aid in heat transfer in chemical processing and electronic cooling devices. The research uses fin length-to-height ratios below one, and Reynolds numbers between
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Theoretical and numerical study on ceiling temperature distribution of fire in the SRRT with curvature considering train blocking Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-11 Daiqiang Zhu, Pai Xu, Liangjie Zhou, Zhengpan Hu, Rongjun Xing, Linjie Li
The slopping rack railway tunnel (SRRT) with curvature is applied to pass through mountainous areas due to the terrain. And the temperature distribution under train blocking in the SRRT with curvature is significantly different when a fire occurs, posing a great threat to personnel safety. The train blocking and two curvature types of -shaped and -shaped are considered, and the mathematical expressions
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Double-diffusive mixed convection in an inclined square cavity filled with nanofluid: A numerical study with external magnetic field and heated square blockage effects Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-11 N.R. Devi, M. Gnanasekaran, A. Satheesh, P.R. Kanna, J. Taler, D.S. Kumar, D. Taler, T. Sobota
This study explores the influence of FeO – water nanofluid, magnetic forces, and double-diffusive mixed convection characteristics on a steady-state, two-dimensional, laminar flow within an inclined square cavity containing four heated square blockages. The governing equations are solved using the Finite Volume Method (FVM). In this configuration, the temperature and concentration inside the square
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Investigation of the effect of model structure type on the thermal performance of phase change materials through molecular dynamics simulation Case Stud. Therm. Eng. (IF 6.8) Pub Date : 2024-03-11 Walid Aich, Ali Basem, Abbas J. Sultan, Amer Ali Ghabra, Aboulbaba Eladeb, Lioua Kolsi, Soheil Salahshour, Sh. Baghaei
Using molecular dynamics (MD) simulation, the thermal efficacy of phase change materials (PCMs) in solar energy applications and solar thermal energy storage was evaluated. In order to achieve this objective, an investigation was conducted into the structure's temperature (Temp), velocity, and density profiles, heat flux, thermal conductivity, charge and discharge time, and thermal stability. Three