Case Studies in Thermal Engineering最新文献_第4页

Thermal and hydraulic performance of molten salt steam generation system under varying operating conditions in concentrating solar power plants 聚光太阳能电站不同工况下熔盐蒸汽发生系统的热水力性能

IF 6.4 2区工程技术

Case Studies in Thermal Engineering Pub Date : 2025-05-15 DOI: 10.1016/j.csite.2025.106340

Jiaming Tian, Bo Ren, Yiran Duan, Biao Li, Yueshe Wang

{"title":"Thermal and hydraulic performance of molten salt steam generation system under varying operating conditions in concentrating solar power plants","authors":"Jiaming Tian, Bo Ren, Yiran Duan, Biao Li, Yueshe Wang","doi":"10.1016/j.csite.2025.106340","DOIUrl":"10.1016/j.csite.2025.106340","url":null,"abstract":"<div><div>To conduct the thermal transport characteristics and operational stability of the steam generation system (SGS) under partial load conditions in concentrating solar power (CSP), a real-scale shell-and-tube steam generator hydrodynamics predictive model is developed. This model integrates lumped parameter methods with the finite volume method to account for heat transfer and phase change. Additionally, in accordance with the prevailing water circulation mode in the CSP plant, a typical model of the natural circulation system is established, while optimal stable operating points of the maximum circulation mass flow rate under varying operating conditions are determined. The results indicate that the inherent stability of the generator strongly lies in the dynamic compromise between its thermodynamic and hydrodynamic characteristics. Under high load conditions, the natural circulation mode demonstrates excellent flow stability. Operating at lower operating pressures results in greater circulation flow and a heightened sensitivity to phase changes. Under system pressures of 13.76, 11.08, 8.39, and 6.71 MPa, the recommended circulation ratios are determined to be 5.38, 7.86, 11.95, and 16.07, respectively. Furthermore, the stability of the circulation curve is optimized by adjusting the structural dimensions of the steam generator. The sensitivity to evaporation capacity and heat exchanger effectiveness is assessed.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"72 ","pages":"Article 106340"},"PeriodicalIF":6.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical and artificial neural network framework for predicating MHD radiative flow and heat transfer of hybrid nanofluid with Cattaneo-Christov theory 基于Cattaneo-Christov理论的混合纳米流体MHD辐射流和传热预测的数值和人工神经网络框架

IF 6.4 2区工程技术

Case Studies in Thermal Engineering Pub Date : 2025-05-14 DOI: 10.1016/j.csite.2025.106311

Fathi Alimi , Sohail Rehman , Mohamed Bouzidi , Fisal Asiri , Taoufik Saidani , Vineet Tirth

{"title":"Numerical and artificial neural network framework for predicating MHD radiative flow and heat transfer of hybrid nanofluid with Cattaneo-Christov theory","authors":"Fathi Alimi , Sohail Rehman , Mohamed Bouzidi , Fisal Asiri , Taoufik Saidani , Vineet Tirth","doi":"10.1016/j.csite.2025.106311","DOIUrl":"10.1016/j.csite.2025.106311","url":null,"abstract":"<div><div>In this paper, the artificial neural network (ANN) is executed to scrutinize the heat transfer performance of water-based hybrid nanofluid (HNF) flow over a permeable stretching surface under the influence of an inclined magnetic field and thermal radiation. The advanced Cattaneo–Christov heat flux model (CCHFM), is introduced in this study in order to characterize the heat transfer features in a boundary layer (BL) slip flow, with thermal radiation, variable thermal conductivity and nanoparticles diffusion. The equation of energy is renovated taking thermal radiation, variable thermal conductivity, thermal jump and thermal relaxation effects. The flow model is constructed using BL approximation and necessary assumption while the Robin type boundary conditions are obtained by assuming thermal jump and velocity slip. The modified first order differential equations are solved using Bvp4c mechanism. The findings reveals that the coefficient of frictional drag is reduced by the magnetic parameter while contrary behavior is seen for nanoparticle volume fraction. The precision of the ANN model appeared astounding, with an error range of 10 <span><math><mrow><msup><mi>E</mi><mrow><mo>−</mo><mn>8</mn></mrow></msup></mrow></math></span> to 10 <span><math><mrow><msup><mi>E</mi><mrow><mo>−</mo><mn>9</mn></mrow></msup></mrow></math></span>. The regression values that are nearer 1 indicate a good fit between the actual data and the forecasts. The thermal relaxation parameter diminished the temperature and heat dissipation.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"72 ","pages":"Article 106311"},"PeriodicalIF":6.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144067402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Large eddy simulations of pool fires and backdraft in a compartment using FDS and FireFOAM 使用FDS和FireFOAM模拟隔间内池火和回流的大涡流

IF 6.4 2区工程技术

Case Studies in Thermal Engineering Pub Date : 2025-05-14 DOI: 10.1016/j.csite.2025.106337

Dinesh Myilsamy , Chang Bo Oh , Joonho Jeon

{"title":"Large eddy simulations of pool fires and backdraft in a compartment using FDS and FireFOAM","authors":"Dinesh Myilsamy , Chang Bo Oh , Joonho Jeon","doi":"10.1016/j.csite.2025.106337","DOIUrl":"10.1016/j.csite.2025.106337","url":null,"abstract":"<div><div>This study evaluated the performance of two widely used fire simulation codes for predicting heptane pool fires and methane backdrafts occurring within a compartment. The simulation models used were Fire Dynamics Simulator (FDS), which applies a low-Mach-number approximation, and FireFOAM, which performs a compressible flow analysis. Turbulence analysis was conducted using the large eddy simulation (LES) technique. The eddy dissipation model (EDM) was applied to pool fire simulations, and the eddy dissipation concept (EDC) model, which considers a two-step chemical reaction, was applied to backdraft simulations. Both simulation codes reasonably predicted the temperature and key chemical species, such as O<sub>2</sub> and CO<sub>2</sub> concentrations, for the heptane pool fire, with FDS predicting slightly higher temperatures than FireFOAM. For methane backdrafts, both models performed similarly during the gravity current phase; however, significant differences were observed in backdraft onset and propagation. FireFOAM closely matched the experimental pressure data, whereas FDS overestimated the pressure and predicted an earlier peak. FireFOAM also simulates flame distribution and fireball formation more reasonably. FDS, which uses a low-Mach-number approximation, is computationally efficient but less accurate for backdrafts, where pressure changes are crucial.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"72 ","pages":"Article 106337"},"PeriodicalIF":6.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A fully coupled thermal-fluid-electric-mechanics multiphysics numerical model for comprehensive performance evaluation of annular thermoelectric generators 环形热电发电机综合性能评价的热-流-电-力全耦合多物理场数值模型

IF 6.4 2区工程技术

Case Studies in Thermal Engineering Pub Date : 2025-05-14 DOI: 10.1016/j.csite.2025.106329

Ding Luo , Zheng Li , Ying Li , Haokang Zhang , Xuehui Wang

{"title":"A fully coupled thermal-fluid-electric-mechanics multiphysics numerical model for comprehensive performance evaluation of annular thermoelectric generators","authors":"Ding Luo , Zheng Li , Ying Li , Haokang Zhang , Xuehui Wang","doi":"10.1016/j.csite.2025.106329","DOIUrl":"10.1016/j.csite.2025.106329","url":null,"abstract":"<div><div>The maximum thermal stress is an important indicator for evaluating the thermal reliability of thermoelectric generators (TEGs), but theoretical models to simultaneously predict the thermoelectric and thermomechanical performance of TEGs are lacking. Therefore, a fully coupled thermal-fluid-electric-mechanics multiphysics numerical model is established, and it is adopted to conduct a comprehensive numerical analysis of an annular TEG. Additionally, the influences of geometric parameters (height <em>h</em> and angle <span><math><mrow><mi>θ</mi></mrow></math></span>) of thermoelectric elements and exhaust conditions on the performance of the annular TEG are studied. Numerical results reveal that reducing the thermoelectric element height (<em>h</em>) from 5 mm to 2 mm under <em>T</em><sub>in</sub> = 550 K and <em>ṁ</em><sub>ex</sub> = 30 g/s enhances output power by 27.6 % (10.97 W–14.02 W) but lowers conversion efficiency from 3.41 % to 2.99 %, while maximum thermal stress decreases by 11.6 % (289.72 MPa–256.07 MPa). Increasing the angle (<em>θ</em>) from 4° to 7° elevates output power by 11.6 % (12.94 W–14.44 W) yet reduces efficiency by 14.4 % (3.34 %–2.86 %), with thermal stress amplified for larger <em>θ</em>–<em>θ</em><sub>s</sub> mismatches. Both the thermoelectric and thermomechanical performance of the annular TEG are more significantly affected by exhaust temperature compared to mass flow rate. This model integrates fluid dynamics and thermal-electric-mechanics coupling, overcoming limitations of prior studies that simplified boundary conditions. It provides actionable insights for optimizing annular TEGs in automotive waste heat recovery, balancing thermoelectric performance and thermomechanical performance.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"72 ","pages":"Article 106329"},"PeriodicalIF":6.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling and performance analysis of a solar thermal desalination system using simulation in TRNSYS software 利用TRNSYS仿真软件对太阳能热脱盐系统进行建模和性能分析

IF 6.4 2区工程技术

Case Studies in Thermal Engineering Pub Date : 2025-05-14 DOI: 10.1016/j.csite.2025.106332

Mohammad Shykhaee, Hossein Yousefi, Ahmad Hajinezhad, Mahmood Abdoos, Younes Noorollahi

{"title":"Modeling and performance analysis of a solar thermal desalination system using simulation in TRNSYS software","authors":"Mohammad Shykhaee, Hossein Yousefi, Ahmad Hajinezhad, Mahmood Abdoos, Younes Noorollahi","doi":"10.1016/j.csite.2025.106332","DOIUrl":"10.1016/j.csite.2025.106332","url":null,"abstract":"<div><div>Solar energy is one of the clean and sustainable solutions to fight freshwater scarcity in hot and arid regions. The current paper presents the design of a thermal desalination system powered by solar energy for large-scale freshwater production by using the TRNSYS software. Solar collectors' Energy supply accounts for saline Water's required phase change, with a six-stage separator to extract the generated steam from saline Water. More precisely, heat exchangers condense the generated steam and heat the feeding saline water before the solar collectors are in place. Further, the concerned simulation has taken the meteorological data from Bandar Abbas due to high solar irradiation and its closeness with seawater from the Persian Gulf. Consequently, the computer-based simulated results highlighted that on occasions of maximum solar radiation, the solar collector exit temperature reached approximately 190 °C. However, in the case of the temperature increase of the water required to produce steam, it takes quite some time; hence, on the ground, this installation operates about 6 h a day despite the available 10-h active solar radiation. On a day like that, 470,000 m<sup>3</sup> of Freshwater would have been produced, whereas on one of the hottest weeks during the whole year in late May, it is very confident of showing a yield of 45 %. The system's efficiency was also calculated to be 43 %, even on the year's coldest days. A short comparison with other available studies further confirmed the system's effectiveness. Therefore, this research highlights solar energy's viability as a renewable and clean approach to solving water shortage problems in hot and arid regions.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"72 ","pages":"Article 106332"},"PeriodicalIF":6.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144067401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental assessment of the interaction between indoor air quality and thermal comfort in naturally ventilated secondary classrooms in southern Spain 西班牙南部自然通风中学教室室内空气质量与热舒适相互作用的实验评估

IF 6.4 2区工程技术

Case Studies in Thermal Engineering Pub Date : 2025-05-14 DOI: 10.1016/j.csite.2025.106335

R. Escandón , C.M. Calama-González , R. Suárez

{"title":"Experimental assessment of the interaction between indoor air quality and thermal comfort in naturally ventilated secondary classrooms in southern Spain","authors":"R. Escandón , C.M. Calama-González , R. Suárez","doi":"10.1016/j.csite.2025.106335","DOIUrl":"10.1016/j.csite.2025.106335","url":null,"abstract":"<div><div>Current European policies focus on achieving climate neutrality by 2050. However, the COVID-19 crisis has disrupted social conditions, reigniting the debate on buildings with high occupancy and static users for long periods, such as schools, given their inadequate health and comfort conditions. In the Mediterranean climate, most school buildings lack suitable ventilation systems, due to either their age or a reluctance to use mechanical ventilation systems.</div><div>This study provides a quantitative analysis of current behavioural and environmental factors affecting pollutant exposure, covering the gap in the existing literature on simultaneous assessment on indoor air quality conditions (CO<sub>2</sub>, PM<sub>2.5</sub>, PM<sub>10</sub>), and hygrothermal comfort (temperature and relative humidity) in a post-COVID scenario in existing secondary school buildings in southern Spain. For this purpose, a continuous monitoring of indoor environmental conditions in cooling, mild, and heating seasons is proposed to assess the influence of natural ventilation conditions on indoor air quality and thermal comfort, instead of the short-term monitoring focused on specific periods frequently found in previous studies. The results show a widespread use of natural overventilation through windows, especially in summer (more than 50 % of the occupied hours), to guarantee indoor air quality conditions (with CO<sub>2</sub> below 900 ppm during almost 100 % of the occupied hours). However, in general, this involves clearly compromising thermal conditions (with seasonal average values above 25 °C and 100 % of the occupied hours in discomfort during the hottest weeks) and a moderate loss of cognitive performance during more than 97 % of the summer occupied hours.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"72 ","pages":"Article 106335"},"PeriodicalIF":6.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using MD simulation to evaluate the effects of working fluid, wall material, and wall layering of a nano-grooved flat plate heat pipe 采用MD模拟方法评价了工质、管壁材料和管壁分层对纳米开槽平板热管的影响

IF 6.4 2区工程技术

Case Studies in Thermal Engineering Pub Date : 2025-05-14 DOI: 10.1016/j.csite.2025.106331

Gholamreza Ahmadi, Mohammad Ameri, Ali Jahangiri

{"title":"Using MD simulation to evaluate the effects of working fluid, wall material, and wall layering of a nano-grooved flat plate heat pipe","authors":"Gholamreza Ahmadi, Mohammad Ameri, Ali Jahangiri","doi":"10.1016/j.csite.2025.106331","DOIUrl":"10.1016/j.csite.2025.106331","url":null,"abstract":"<div><div>Monitoring and dissipating the heat generated by semiconductor-based components, including microprocessors, is necessary for their stability and optimal performance. The use of heat pipes (HPs) as passive instruments makes this possible without the need for any additional energy sources. The application of flat plate nano-HPs in microprocessors has materialized by recent developments in nanoscale device manufacturing. The effectiveness of a cell of this kind of HP has been investigated in this article. While focusing on the impact of wall thickness, the velocity, density, and temperature profiles, and also mass and heat transmission have been calculated under various circumstances. The molecular dynamics simulation findings indicated that the mass transfer rate has increased as the wall layer numbers have increased, under all circumstances. The atomic structure of the working fluid has a significant impact on the mass transfer rate inside nano-HPs. The maximum and minimum heat fluxes are 1896 W/cm<sup>2</sup> and 1392 W/cm<sup>2</sup>, which respectively relate to water and argon. The overall performance of HP significantly relates to the circulation rate of the working fluid. Using Cu-EtOH leads to the maximum mean velocity (0.096 Å/ps). Cu-EtOH and Pt-Ar respectively, shows the highest and lowest average temperatures, as 463.1 K and 404.7 K.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"72 ","pages":"Article 106331"},"PeriodicalIF":6.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transient response of a hygrothermoelastic cylinder with internal heat and moisture sources using non-Fourier hyperbolic coupled model 利用非傅立叶双曲耦合模型研究具有内部热源和湿源的湿热弹性圆柱体的瞬态响应

IF 6.4 2区工程技术

Case Studies in Thermal Engineering Pub Date : 2025-05-14 DOI: 10.1016/j.csite.2025.106207

Y. Peng , X.Y. Zhang , X.F. Li

引用次数: 0

Experimental study on the matching characteristics of working fluid types and heat sources based on the organic Rankine cycle system 基于有机朗肯循环系统的工质类型与热源匹配特性实验研究

IF 6.4 2区工程技术

Case Studies in Thermal Engineering Pub Date : 2025-05-14 DOI: 10.1016/j.csite.2025.106336

Jian Sun, Bin Peng

{"title":"Experimental study on the matching characteristics of working fluid types and heat sources based on the organic Rankine cycle system","authors":"Jian Sun, Bin Peng","doi":"10.1016/j.csite.2025.106336","DOIUrl":"10.1016/j.csite.2025.106336","url":null,"abstract":"<div><div>Organic substances with low boiling points can be easily converted into high-pressure gases when heated, making them suitable for ORC (organic Rankine cycle) systems to recover low-temperature waste heat. This study investigated the recycling process of a LTHS (low-temperature heat source) using a kW-scale ORC experimental system with hydrofluorocarbon as the working fluids. The system performance under various operating conditions was explored by changing the type of working fluids and WFFQ (working fluids filling quantity), as well as HST. When the WFFQ increased from 5 to 10 kg at a HST of 100 °C, the theoretical shaft power of the expander ranged from 0.332 to 1.341 kW for R134a, 0.555–1.9147 kW for R245fa, and 0.372–1.067 kW for R227ea. Corresponding thermal efficiency ranged from 2.084 to 4.739 %, 3.136–5.878 %, and 4.525–6.448 %, respectively. At a HST of 120 °C, the theoretical shaft work of the expander ranged from 0.517 to 1.569 kW for R134a, 0.703–2.165 kW for R245fa, and 0.445–1.158 kW for R227ea; thermal efficiency ranged from 3.500 to 5.563 %, 3.889–6.303 %, and 5.446–6.454 %, respectively.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"72 ","pages":"Article 106336"},"PeriodicalIF":6.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study of hybrid nano Ag-MgO-H2O flow fluid past a slim needle with thermal radiation and Neild's boundary 纳米Ag-MgO-H2O混合流体通过细针的热辐射和Neild边界研究

IF 6.4 2区工程技术

Case Studies in Thermal Engineering Pub Date : 2025-05-14 DOI: 10.1016/j.csite.2025.106328

G. Dharmaiah , B. Shankar Goud , Kottakkaran Sooppy Nisar , Y. Dharmendar Reddy

{"title":"A study of hybrid nano Ag-MgO-H2O flow fluid past a slim needle with thermal radiation and Neild's boundary","authors":"G. Dharmaiah , B. Shankar Goud , Kottakkaran Sooppy Nisar , Y. Dharmendar Reddy","doi":"10.1016/j.csite.2025.106328","DOIUrl":"10.1016/j.csite.2025.106328","url":null,"abstract":"<div><div>Numerous industrial applications depend on heat transmission processes. Hybrid nanofluids with a greater thermal exponent improve the heat transfer ability of regular fluids. A hybrid nanofluid Ag-MgO-H<sub>2</sub>O has been examined on a moving needle to assess magnetohydrodynamics, Brownian motion, thermophoresis, and thermal radiation effects. The dimensionless ordinary differential equations have been converted from partial differential equations monitoring the fluid flow model using appropriate similarity transformations. Matlab software was used to analyze the transformed equations and calculate numerical solutions. Nield's boundary condition is also considered. A first-order ordinary differential equation system is formed by transforming the partial differential equations originally generated. The present study investigates the effects of changing MHD and thermophoresis values on concentrations, temperatures, and velocity profiles. Local Sherwood number, skin friction, and Nusselt number are all assessed in the research. As well as heat transfer enhancements, energy conversion systems, advanced manufacturing, and material processing, these results have practical applications in diverse fields. Thermal systems can benefit greatly from the results to improve energy efficiency. Emerging parameters include: the mass of nanoparticles (0–40 g), the mass of the base fluid (100 g), the needle size (0.001–0.2), the radiation parameter, the magnetic field parameter, the Prandtl number, and the velocity ratio parameter. As enhancing the values of ‘c’, the result in momentum and solutal boundaries diminishes, and also reverse trend is observed on the thermal boundary. The velocity ratio factor enhances, the outcome of the velocity profile upsurges.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"72 ","pages":"Article 106328"},"PeriodicalIF":6.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0