International Journal of Thermofluids最新文献

Numerical study of micro polar fluid flow over a stretching sheet with darcy–forchheimer drag, thermal radiation, dufour effect, and heat source 考虑达西-福海默阻力、热辐射、杜福效应和热源的微极流体在拉伸板上流动的数值研究

Q1 Chemical Engineering

International Journal of Thermofluids

Pub Date : 2026-03-01 Epub Date: 2026-01-10 DOI: 10.1016/j.ijft.2026.101556

S. Karthik , D. Iranian , C. Subramanian , V. Lakshmi , Qasem Al-Mdallal

This study is significant for advancing the design of porous heat-transfer systems such as geothermal exchangers, catalytic reactors, and polymer processing units by analyzing how multiple physical mechanisms jointly influence micropolar fluid behavior. The work numerically investigates the combined effects of Darcy–Forchheimer drag, thermal radiation, Dufour diffusion, and internal heat generation on the flow, micro rotation, and heat-transfer characteristics of a micropolar fluid over a stretching sheet embedded in a porous medium.The governing nonlinear partial differential equations were transformed into coupled ordinary differential equations through similarity transformations and solved using the Runge–Kutta–Fehlberg (RKF45) method with a shooting technique to ensure convergence and precision. Results reveal that Darcy and Forchheimer parameters substantially reduce fluid velocity due to enhanced porous resistance, whereas radiation and heat-generation parameters elevate the temperature profile within the boundary layer. An increase in the micropolar coupling parameter intensifies micro rotation and modifies near-wall shear stress behavior, while the Darcy number exhibits the strongest influence by markedly decreasing the heat-transfer rate as porosity resistance rises. Despite extensive research on micropolar and nanofluid flows through porous media, few studies have addressed the combined nonlinear influence of Darcy–Forchheimer drag, radiative heat transfer, Dufour diffusion, and internal heat generation. The present unified model incorporates these mechanisms to capture their interactive effects on momentum and energy transport, offering new physical insights for optimizing thermal management in porous and radiative fluid systems.

该研究通过分析多种物理机制如何共同影响微极流体行为，对推进地热交换器、催化反应器和聚合物处理装置等多孔传热系统的设计具有重要意义。该工作数值研究了达西-福希海默阻力、热辐射、杜福尔扩散和内部产热对微极流体在多孔介质中拉伸薄片上的流动、微旋转和传热特性的综合影响。通过相似变换将控制非线性偏微分方程转化为耦合常微分方程，采用RKF45 （Runge-Kutta-Fehlberg, RKF45）法求解，保证了收敛性和精度。结果表明，Darcy和Forchheimer参数由于孔隙阻力增强而显著降低了流体速度，而辐射和产热参数则提高了边界层内的温度剖面。微极性耦合参数的增加增强了微旋转并改变了近壁剪切应力行为，而Darcy数的影响最大，随着孔隙阻力的增加，传热速率显著降低。尽管对微极流体和纳米流体在多孔介质中的流动进行了广泛的研究，但很少有研究涉及达西-福海默阻力、辐射传热、杜福尔扩散和内部产热的非线性综合影响。目前的统一模型包含了这些机制，以捕捉它们对动量和能量输运的相互作用，为优化多孔和辐射流体系统的热管理提供了新的物理见解。

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引用次数: 0

Maxwell fluid flow with Gyrotactic microorganisms: Effects of suction reynolds number, activation energy, and nonlinear heat radiation 旋转微生物的麦克斯韦流体流动：吸力雷诺数、活化能和非线性热辐射的影响

Q1 Chemical Engineering

International Journal of Thermofluids

Pub Date : 2026-03-01 Epub Date: 2026-01-15 DOI: 10.1016/j.ijft.2026.101560

Indushri Patgiri , B. Shankar Goud , Hussein Maaitah , Mohamad Y. Mustafa

The purpose of this study is to explore a steady 2-D flow behaviour of Maxwell fluid, focusing on the properties of important factors on temperature, velocity, concentration, and motile microbe density distributions. The roles of suction Reynolds number, energy activation, and nonlinear thermal radiation are discussed. By inserting appropriate similarity variables, governing equations are transformed into dimensionless form, and the resulting nonlinear equations are numerically solved using the bvp4c technique. Graphs depict the impact of various physical factors on temperature, velocity, concentration, and motile microbe density boundary layer profiles. Furthermore, the research shows changes in skin friction coefficients, mass transfer rates, and density numbers. The principal findings of this study show that the Deborah number and magnetic parameter diminish fluid velocity and shear stress. The heat source parameter and Eckert number increase the thickness of the thermal boundary layer. Meanwhile, the Reynolds and Schmidt numbers reduce the concentration dispersion. Furthermore, the bioconvective Schmidt number and motile parameter diminish the density of motile bacteria. Researchers are interested in this fluid model because gyrotactic organisms boost bioconvective mixing, which improves heat and mass transfer; this mechanism is directly applicable to practical systems like bioreactors, wastewater treatment, microfluidic gadgets, and bioenergy generation.

本研究的目的是探索麦克斯韦流体的稳定二维流动行为，重点关注温度、速度、浓度和运动微生物密度分布等重要因素的特性。讨论了吸力雷诺数、能量激活和非线性热辐射的作用。通过插入适当的相似变量，将控制方程转化为无因次形式，并利用bvp4c技术对得到的非线性方程进行数值求解。图表描绘了各种物理因素对温度、速度、浓度和可动微生物密度边界层剖面的影响。此外，研究还显示了表面摩擦系数、传质率和密度数的变化。研究结果表明，底波拉数和磁参量对流体速度和剪应力有一定的影响。热源参数和埃克特数增加了热边界层的厚度。同时，雷诺数和施密特数减小了浓度弥散。此外，生物对流施密特数和运动参数降低了运动菌的密度。研究人员对这种流体模型感兴趣，因为回旋生物促进了生物对流混合，从而改善了传热和传质；该机制可直接应用于生物反应器、废水处理、微流体装置和生物能源发电等实际系统。

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引用次数: 0

Research on pollution prevention and control in semiconductor process tool and mini-environment 半导体加工工具及微环境污染防治研究

Q1 Chemical Engineering

International Journal of Thermofluids

Pub Date : 2026-03-01 Epub Date: 2026-01-26 DOI: 10.1016/j.ijft.2026.101572

Shih-Cheng Hu , Tee Lin , Omid Ali Zargar , Shih-Hsun Chu , Yang-Cheng Shih , Graham Leggett

Taiwan currently holds the leading position globally in the semiconductor manufacturing industry, with wafer fabrication outsourcing playing a significant role. The cleanliness of cleanrooms is paramount to maintain and strengthen this position. During the wafer manufacturing process, Airborne Molecular Contamination (AMC) can lead to defects in wafers, thereby reducing yield. Traditional ballroom-style cleanrooms are increasingly unable to meet the current requirements for cleanliness and reliability. Thus, controlling gas-phase molecular contaminants in mini-environments has become a critical research topic. Currently, most process equipment maintains positive pressure relative to the surrounding environment to preserve internal cleanliness and prevent gas intrusion from cleanroom contamination. However, when process equipment is connected to the Equipment Front End Module (EFEM), the design of the positive pressure in the process equipment may introduce process gases into the connecting channels of the EFEM. This can lead to gas contamination in the mini-environment due to diffusion and turbulence generated by the movement of mechanical arms, resulting in corrosion and contamination of the mini-environment walls and equipment surfaces. This study utilizes Computational Fluid Dynamics (CFD) simulations to analyze contamination during the connection between the Equipment Front End Module (EFEM) and process equipment. It investigates measures to prevent the diffusion of process gases (HF) from process equipment to the mini-environment and provides a reference for future prevention of special gas contamination in mini-environments for the first time. The results show that by optimizing the process parameters such as floor suction velocity, laminar air curtain (LAC) flow rate, and duct local exhaust velocity, the HF pollutant isolation efficiency could be improved by up to 24.69 %. The findings of this study could be beneficial to improve the front opening unified pod (FOUP) cleaning efficiency in semiconductor manufacturing and even different areas of vacuum technology.

台湾目前在半导体制造行业处于全球领先地位，晶圆制造外包发挥着重要作用。洁净室的清洁度对保持和加强这一地位至关重要。在晶圆制造过程中，空气分子污染（AMC）会导致晶圆出现缺陷，从而降低良率。传统的宴会厅式洁净室越来越不能满足当前对洁净度和可靠性的要求。因此，控制微环境下气相分子污染物已成为一个重要的研究课题。目前，大多数工艺设备相对于周围环境保持正压，以保持内部清洁度并防止洁净室污染的气体侵入。然而，当工艺设备连接到设备前端模块（EFEM）时，工艺设备正压的设计可能会将工艺气体引入到EFEM的连接通道中。这可能导致微型环境中的气体由于机械臂运动产生的扩散和湍流而受到污染，从而导致微型环境壁和设备表面的腐蚀和污染。本研究利用计算流体动力学（CFD）模拟分析了设备前端模块（EFEM）与工艺设备连接过程中的污染。首次探讨了防止工艺气体从工艺设备向微环境扩散的措施，为今后微环境特殊气体污染的防治提供了参考。结果表明，通过优化地板吸入速度、层流气幕流量、风道局部排气速度等工艺参数，HF污染物隔离效率可提高24.69%。本研究结果将有助于提高半导体制造乃至其他真空技术领域的前开口统一舱（FOUP）清洗效率。

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引用次数: 0

Numerical investigation of flow distribution and energy extraction in multi-fractured doublet Enhanced Geothermal Systems (EGS) 多裂缝双层增强型地热系统（EGS）渗流分布及能量提取数值研究

Q1 Chemical Engineering

International Journal of Thermofluids

Pub Date : 2026-03-01 Epub Date: 2026-01-31 DOI: 10.1016/j.ijft.2026.101577

M.J. Uddin , M.M. Rahman , Salah A. Faroughi

Enhanced Geothermal Systems (EGS) offer significant potential for sustainable, high-temperature energy extraction, yet their efficiency depends strongly on how fluid flow and heat transfer evolve within complex fracture networks. This study introduces a novel numerical framework that captures the coupled flow and thermal behavior in a multi-fractured EGS by solving the Forchheimer and energy equations simultaneously within both wells and fractures using the finite element method. Four EGS configurations — parallel, anti-parallel, converging, and inclined — are evaluated to examine the influence of fracture permeability, porosity, inlet velocity, inlet temperature, and well inclination on fluid distribution and thermal performance. Results demonstrate that the anti-parallel configuration provides the most balanced flow distribution, minimal short-circuiting, and the highest production temperatures, while the converging configuration exhibits the weakest thermal performance due to accelerated flow convergence and reduced residence time. Permeability strongly governs velocity redistribution and thermal sweeping, whereas porosity plays only a secondary role. Increasing inlet velocity decreases fracture temperatures by shortening residence time, whereas higher inlet temperatures produce nearly proportional increases in production temperature. Well inclination modifies flow alignment and thermal gradients, with moderate angles offering optimal heat extraction. This study emphasizes the crucial importance of coordinating fracture geometry, flow resistance, and operational parameters to optimize thermal recovery in EGS reservoirs. Water produces higher but more uneven velocities across the fractures, whereas supercritical CO

_{2}

maintains a more uniform flow with a comparable downstream velocity increase, indicating its suitability for stable heat extraction in antiparallel EGS systems. These findings provide a basis for optimizing fracture-network design and motivate future studies on advanced working fluids, such as nanofluids and water–CO

_{2}

mixtures, which offer tunable thermophysical properties and the potential to balance heat transfer enhancement with flow uniformity for improved geothermal energy extraction efficiency.

增强型地热系统（EGS）为可持续高温能源开采提供了巨大的潜力，但其效率在很大程度上取决于复杂裂缝网络中流体流动和传热的演变。该研究引入了一种新的数值框架，通过使用有限元方法同时求解井和裂缝内的Forchheimer方程和能量方程，可以捕获多裂缝EGS中的耦合流动和热行为。研究人员评估了四种EGS结构——平行、反平行、收敛和倾斜——以研究裂缝渗透率、孔隙度、入口速度、入口温度和井斜对流体分布和热性能的影响。结果表明，反并联配置的流量分布最平衡，短路最小，生产温度最高，而会聚配置由于加速了流量会聚和减少了停留时间，其热工性能最差。渗透率对速度重分布和热波及的影响很大，而孔隙度仅起次要作用。增加进口速度会缩短停留时间，从而降低裂缝温度，而提高进口温度则会使生产温度几乎成比例地升高。井斜可以改变流体流向和热梯度，适度的井斜可以提供最佳的热量提取。该研究强调了协调裂缝几何形状、流动阻力和操作参数对优化EGS油藏热采收率的重要性。水在裂缝中产生更高但更不均匀的速度，而超临界二氧化碳在下游速度增加的情况下保持更均匀的流动，这表明它适用于反平行EGS系统的稳定热提取。这些发现为优化裂缝网络设计提供了基础，并激发了未来对先进工作流体（如纳米流体和水-二氧化碳混合物）的研究，这些工作流体具有可调的热物理性质，并且有可能平衡传热增强和流动均匀性，从而提高地热能开采效率。

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引用次数: 0

Vacuum pressure application in biodiesel production from refined bleached deodorized palm olein 真空压力在精制漂白脱臭棕榈油生产生物柴油中的应用

Q1 Chemical Engineering

International Journal of Thermofluids

Pub Date : 2026-03-01 Epub Date: 2026-01-26 DOI: 10.1016/j.ijft.2026.101571

Rondang Tambun, Bode Haryanto, Juan Surya Manurung, Nicholas, Vikram Alexander, Anggara Dwita Burmana, Ulfatunnisa

Many developments in biodiesel production have been carried out to streamline costs and energy required. Studying biodiesel production at vacuum pressure aims to save energy by operating at lower temperatures than non-vacuum methods. This research aims to produce biodiesel from Refined Bleached Deodorized Palm Olein (RBDPO) under vacuum pressure conditions. In this research, RBDPO was methanolyzed using KOH as a catalyst. The process consists of several stages, namely making a methoxy solution, conducting the transesterification process, and purifying the methyl ester. This research is conducted using a sequential experimental design, following a one factor at a time approach. The first phase involves varying the operating pressure (650 mbar, 750 mbar, 850 mbar, and 950 mbar) while keeping the molar ratio of methanol to raw materials at 10:1, the reaction time at 60 min, the catalyst amount at 1%, and the reaction temperature at 50 °C. After identifying the highest conversion based on operating pressure, the second phase explores variations in the amount of catalyst (1%, 2%, 3%, and 4%). The third phase focuses on the molar ratio of methanol to raw materials (10:1, 12:1, 14:1, and 16:1). The fourth phase involves varying the reaction time (60, 70, 80, and 90 min). Finally, the reaction temperature is varied in the fifth phase (45 °C, 50 °C, 55 °C, and 60 °C). In this study, the highest biodiesel conversion obtained is 97.86% at a pressure of 750 mbar, reaction time of 60 min, catalyst amount of 1%, mole ratio of 14:1, and reaction temperature of 55 °C. The results of gas chromatography analysis show that C₁₆ and C₁₈ esters are the most common components in the raw materials and biodiesel produced. The results of the physical properties of biodiesel obtained are ester content of 97.53%, density (40 °C) of 879 kg/m³, kinematic viscosity (40 °C) of 3.920 cSt, flash point of 150 °C, and water content of 0 mg/kg, which meet ASTM D-6751, EN 14214, and Indonesian National Standard 7182:2015. This study demonstrates that applying vacuum conditions during transesterification not only enhances biodiesel conversion but has lower process energy.

生物柴油生产的许多发展已经进行，以简化成本和能源需求。研究在真空压力下生产生物柴油的目的是通过在比非真空方法更低的温度下操作来节省能源。本研究以精制漂白脱臭棕榈油（RBDPO）为原料，在真空条件下制备生物柴油。本研究以KOH为催化剂对RBDPO进行甲醇分解。该工艺包括制备甲氧基溶液、进行酯交换过程和纯化甲酯几个阶段。本研究采用顺序实验设计，遵循一次一个因素的方法。第一阶段包括改变操作压力（650 mbar, 750 mbar， 850 mbar和950 mbar），同时保持甲醇与原料的摩尔比为10:1，反应时间为60 min，催化剂用量为1%，反应温度为50℃。在确定了基于操作压力的最高转化率之后，第二阶段探索催化剂用量的变化（1%、2%、3%和4%）。第三阶段的重点是甲醇与原料的摩尔比（10:1,12:1,14:1和16:1）。第四阶段包括改变反应时间（60、70、80和90分钟）。最后，反应温度在第五相（45°C, 50°C, 55°C, 60°C）变化。在本研究中，在压力750 mbar，反应时间60 min，催化剂用量1%，摩尔比14:1，反应温度55℃的条件下，生物柴油的最高转化率为97.86%。气相色谱分析结果表明，C16和C18酯是原料和生产的生物柴油中最常见的成分。所得生物柴油的物理性能为酯含量为97.53%，密度（40℃）为879 kg/m3，运动粘度（40℃）为3.920 cSt，闪点为150℃，含水量为0 mg/kg，符合ASTM D-6751， EN 14214和印度尼西亚国家标准7182:2015。本研究表明，在酯交换过程中采用真空条件不仅提高了生物柴油的转化率，而且降低了过程能量。

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引用次数: 0

Retraction notice to "Corrigendum to “Soret and nonuniform heat source/sink effects in micropolar nanofluid flow over an inclined stretching sheet” [International Journal of Thermofluids Volume 27 (2025) 101160]" [International Journal of Thermofluids 27 (2025) 101233] 对“倾斜拉伸薄片上微极纳米流体流动中的不均匀和不均匀热源/汇效应”的勘误表的撤回通知[International Journal of thermofluid卷27 (2025)101160]" [International Journal of thermofluid 27 (2025) 101233]

Q1 Chemical Engineering

International Journal of Thermofluids

Pub Date : 2026-03-01 Epub Date: 2026-03-03 DOI: 10.1016/j.ijft.2026.101582

Machindranath Diwate , Pradeep G. Janthe , Nitiraj V. Kulkarni , S. Sunitha , Jagadish V. Tawade , Nodira Nazarova , Manish Gupta , Nadia Batool

引用次数: 0

Retraction notice to "Soret and nonuniform heat source/sink effects in micropolar nanofluid flow over an inclined stretching sheet" [International Journal of Thermofluids 27 (2025) 101160] 关于“微极性纳米流体在倾斜拉伸薄片上流动的不均匀和不均匀热源/汇效应”的撤回通知[国际热流体杂志27 (2025)101160]

Q1 Chemical Engineering

International Journal of Thermofluids

Pub Date : 2026-03-01 Epub Date: 2026-03-03 DOI: 10.1016/j.ijft.2026.101583

Machindranath Diwate , Pradeep G. Janthe , Nitiraj V. Kulkarni , S. Sunitha , Jagadish V. Tawade , Nodira Nazarova , Manish Gupta , Nadia Batool

引用次数: 0

Hybrid PCM–nanofluid cooling for photovoltaic modules: outdoor experimental performance evaluation 光伏组件的混合pcm -纳米流体冷却：室外实验性能评估

Q1 Chemical Engineering

International Journal of Thermofluids

Pub Date : 2026-03-01 Epub Date: 2026-02-14 DOI: 10.1016/j.ijft.2026.101586

Aschenaki Altaye , Piroska Víg , István Farkas

Elevated operating temperatures significantly degrade photovoltaic module performance, creating a strong demand for effective thermal management solutions. This study investigates enhanced thermal regulation in PV systems through the integration of encapsulated phase change material and serpentine tube cooling within a hybrid photovoltaic/thermal configuration. The objective was to experimentally evaluate and compare the electrical and thermal performance of this design with a fin-assisted PV/T module, with particular emphasis on the role of latent heat storage. Two PV/T configurations were fabricated: one comprising serpentine copper tubes combined with PCM encapsulated in thermally conductive aluminium pouches, and another employing serpentine tubes with louvered fins to enhance convective heat transfer. A (MWCNT)/water nanofluid was used as the circulating coolant. The novelty of this work lies in the integrated use of encapsulated PCM with serpentine tube cooling to improve PV thermal regulation. Statistical significance of the cooling configurations was confirmed using ANOVA and Tukey’s HSD tests. PCM-integrated PV/T system achieved a maximum power output of 41.5 W and an electrical efficiency of 9.3%, corresponding to relative improvements of 62.7% in power output and 45.3% in efficiency compared with the reference module (25.5 W, 6.4%). The fin-assisted configuration also demonstrated enhanced performance, reaching 37.3 W and 8.4% efficiency. Moreover, the PCM-based system exhibited superior thermal energy recovery and operational stability by mitigating thermal stress during peak irradiance. These results demonstrate the effectiveness of PCM–serpentine tube integration for improving PV/T system performance and reliability in combined electrical and thermal energy applications.

工作温度升高会显著降低光伏组件的性能，从而产生对有效热管理解决方案的强烈需求。本研究通过在光伏/热混合配置中集成封装相变材料和蛇形管冷却来研究光伏系统中增强的热调节。目的是通过实验评估和比较该设计与鳍状辅助PV/T模块的电气和热性能，特别强调潜热储存的作用。制作了两种PV/T结构：一种是由蛇形铜管结合PCM封装在导热铝袋中，另一种是采用带有百叶窗翅片的蛇形管来增强对流传热。采用A (MWCNT)/水纳米流体作为循环冷却剂。这项工作的新颖之处在于集成使用封装的PCM与蛇形管冷却来改善PV热调节。采用方差分析（ANOVA）和Tukey’s HSD检验证实冷却配置的统计学显著性。集成pcm的PV/T系统最大输出功率为41.5 W，电效率为9.3%，与参考模块（25.5 W, 6.4%）相比，输出功率相对提高62.7%，效率相对提高45.3%。翅片辅助配置也显示出更高的性能，达到37.3 W和8.4%的效率。此外，基于pcm的系统通过减轻峰值辐照时的热应力，表现出优越的热能回收和运行稳定性。这些结果证明了pcm -蛇形管集成在提高光伏/T系统性能和可靠性方面的有效性。

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引用次数: 0

Homotopy simulation of oscillatory powell–eyring nanofluid under rotating MHD Forces with Hall–ion slip and thermophoretic deposition 具有霍尔离子滑移和热泳沉积的旋转MHD力作用下振荡型井环纳米流体的同伦模拟

Q1 Chemical Engineering

International Journal of Thermofluids

Pub Date : 2026-03-01 Epub Date: 2026-01-27 DOI: 10.1016/j.ijft.2026.101573

Fahad Sameer Alshammari , S. Karthik , P.K. Nagarajan , B.Vinoth Kumar , Nisha , Ali Akgül

This paper presents an analytical investigation of the unsteady magneto hydrodynamic (MHD) flow of a Powell–Eyring nanofluid over an oscillating vertical plate in a rotating frame. The combined effects of Hall current, ion slip, Brownian motion, and thermophoretic diffusion are incorporated to describe coupled momentum, heat, and mass transport. The governing nonlinear partial differential equations are rendered dimensionless using similarity transformations and solved analytically through an optimized Homotopy Analysis Method (HAM). The influence of the magnetic field, rotation rate, Hall and ion slip parameters, and nanoparticle diffusion mechanisms on flow and thermal characteristics is thoroughly examined. Results reveal that the magnetic parameter induces Lorentz damping, which suppresses the primary velocity by about 12–15%, while the Hall parameter enhances it by nearly 10–14%. A 20% increase in the rotation parameter promotes flow stabilization and enhances temperature uniformity across the boundary layer. The thermophoretic parameter intensifies nanoparticle migration, thickening the thermal boundary layer by approximately 18–22% and increasing wall temperature, whereas Brownian motion slightly elevates the diffusion rate. These combined electromagnetic and diffusion-driven effects strongly regulate the transport behavior of Powell–Eyring nanofluids under oscillatory and rotational conditions. Overall, the study provides a reliable analytical benchmark for optimizing magnetically controlled nanofluid systems. The findings have direct applications in the design of electromagnetic cooling devices, rotating machinery, and high-current electrical wiring systems, where precise control of heat and mass transfer under magnetic and rotational influences is crucial.

本文研究了鲍威尔-埃环纳米流体在旋转框架中振荡垂直板上的非定常磁流体动力学（MHD）流动。霍尔电流、离子滑移、布朗运动和热电泳扩散的综合效应被纳入描述耦合动量、热量和质量输运。利用相似变换将控制非线性偏微分方程转化为无因次方程，并利用优化同伦分析法（HAM）进行解析求解。研究了磁场、旋转速率、霍尔和离子滑移参数以及纳米颗粒扩散机制对流动和热特性的影响。结果表明，磁参量引起的洛伦兹阻尼使初速降低了约12-15%，而霍尔参量使初速提高了近10-14%。旋转参数增加20%可以促进流动稳定并增强边界层温度均匀性。热泳动参数增强了纳米颗粒的迁移，使热边界层增厚约18-22%，使壁面温度升高，而布朗运动则略微提高了扩散速率。这些电磁和扩散驱动的联合效应强烈地调节了鲍威尔-埃环纳米流体在振荡和旋转条件下的输运行为。总的来说，该研究为优化磁控纳米流体系统提供了可靠的分析基准。这些发现在电磁冷却装置、旋转机械和大电流电气布线系统的设计中有直接的应用，在这些系统中，精确控制磁场和旋转影响下的传热和传质是至关重要的。

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引用次数: 0

A multi-technique optimization for boosting energy transmission in time-dependent MHD Casson nanofluid flow under convective boundary conditions 对流边界条件下MHD卡森纳米流体增强能量传输的多技术优化

Q1 Chemical Engineering

International Journal of Thermofluids

Pub Date : 2026-03-01 Epub Date: 2026-02-14 DOI: 10.1016/j.ijft.2026.101585

Mehdi Mahboobtosi, Shabnam Shahri, Fateme Nadalinia Chari, Davood Domiri Ganji, Mofid Gorji

This study optimizes energy transmission in magnetohydrodynamic (MHD) Casson nanofluid flow between parallel disks under convective boundary conditions. A semi-analytical approach using Akbari–Ganji's Method (AGM) solves the complex governing equations, while statistical techniques, including Taguchi’s method, Response Surface Methodology (RSM) and Analysis of Variance (ANOVA), are applied to identify key parameters influencing energy transmission. The study examines the effects of structural and physical parameters, such as suction/injection conditions, magnetic field strength and nano-transport properties, on velocity, temperature and concentration profiles. Results show that geometric-flow parameters and nano-transport properties significantly impact momentum and heat/mass transfer. The results show that the geometric-flow parameter, namely the suction parameter (S), induces region-dependent nonlinear variations in the velocity field, with more pronounced effects under injection conditions due to the additional mass inflow that enhances local acceleration and flow recovery compared to suction. Statistical analysis confirms high predictive reliability, with R² values of 0.9993 for skin friction and 0.9996 for Nusselt number. The study identifies optimized parameter combinations for controlling energy transmission, offering a pathway for enhancing heat and mass transfer without structural redesign. This research provides a strategy for improving energy efficiency through tailored parameter tuning. The findings of this research can be applied to enhance heat and mass transfer in various industrial and biomedical systems, such as energy generation, refrigeration and medical treatments. By optimizing the key parameters in MHD Casson nanofluid flow, this study provides a practical approach for improving the efficiency of thermal management processes without the need for structural redesign.

研究了磁流体力学（MHD）卡森纳米流体在对流边界条件下在平行圆盘间的能量传递。采用Akbari-Ganji方法（AGM）求解复杂的控制方程，采用田口法（Taguchi’s Method）、响应面法（RSM）和方差分析（ANOVA）等统计技术识别影响能量传输的关键参数。该研究考察了结构和物理参数（如吸入/注入条件、磁场强度和纳米输运性质）对速度、温度和浓度分布的影响。结果表明，几何流动参数和纳米输运性质对动量和传热传质有显著影响。结果表明，几何流动参数（即吸力参数S）引起了速度场的区域相关非线性变化，在注射条件下，由于额外的质量流入比吸力增强了局部加速度和流动恢复，因此影响更为明显。统计分析证实了较高的预测信度，皮肤摩擦和努塞尔数的R²值分别为0.9993和0.9996。该研究确定了控制能量传递的优化参数组合，提供了在不重新设计结构的情况下增强传热和传质的途径。本研究提供了一种通过定制参数调整来提高能源效率的策略。这项研究的结果可以应用于各种工业和生物医学系统，如能源生产、制冷和医疗，以增强传热和传质。通过优化MHD Casson纳米流体流动的关键参数，本研究为提高热管理过程的效率提供了一种实用的方法，而无需重新设计结构。

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引用次数: 0