Jaspinder Kaur, Atharva Tiwari, J. Ratan, A. Tiwari
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The objective of this work is to highlight the effects of Reynolds number (Re), confinement ratio (λ), volume concentration (Φ) and diameter of nanoparticles (dnp) on fluid flow and heat transfer\n characteristics of nanofluid. To capture the effect of Φ and dnp in nanofluid, the thermo-physical-properties of CuO nanofluid are determined experimentally. In the results, at Re = 40, a secondary separation zone (recirculation zone) is observed near the\n surface of the channel wall. The drag coefficient value rises as the Φ increases and the vdnp decreases, regardless of other factors such as Re and λ. Conversely, as the confinement ratio and volume fraction of nanoparticles increase, the\n average Nusselt number also rises, while maintaining a constant value of Re and dnp. In contrast, the size of the nanoparticles exhibits an inverse relationship with the average Nusselt number. The study contributes to the understanding of nanofluid behavior and provides\n practical insights for applications, supported by correlations and Artificial Neural Network predictions (Parrales et al.).","PeriodicalId":2,"journal":{"name":"ACS Applied Bio Materials","volume":"285 ","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Numerical Study of Convection Heat Transfer with Confinement Around a Square Cylinder Submerged in a Water-Based Nanofluid\",\"authors\":\"Jaspinder Kaur, Atharva Tiwari, J. Ratan, A. Tiwari\",\"doi\":\"10.1166/jon.2024.2140\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The novelty of this work lies in the comprehensive investigation of Forced convection heat transfer a square cylinder inclined at 45° using CuO nanofluid employing a single phase approach. 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引用次数: 0
摘要
这项研究的新颖之处在于采用单相方法,全面研究了使用 CuO 纳米流体对倾斜 45° 的方形圆柱体进行强制对流传热的问题。具有恒定壁温边界条件的加热方形圆柱体在两个平行壁之间受到流动纳米流体的作用,在雷诺数范围 1 < Re > 40 内发生层流、稳定和二维流动。为了获得流动和能量传递的解决方案,采用了有限元法(FEM)对微分方程和边界条件进行数值求解。这项工作的目的是强调雷诺数 (Re)、封闭比 (λ)、体积浓度 (Φ) 和纳米颗粒直径 (dnp) 对纳米流体的流动和传热特性的影响。为了捕捉纳米流体中 Φ 和 dnp 的影响,实验测定了 CuO 纳米流体的热物理性质。结果表明,在 Re = 40 时,在通道壁表面附近观察到二次分离区(再循环区)。阻力系数值随着 Φ 的增大和 vdnp 的减小而增大,与 Re 和 λ 等其他因素无关。相反,随着纳米颗粒的封闭比和体积分数的增加,平均努塞尔特数也会上升,同时保持 Re 和 dnp 值不变。相反,纳米粒子的大小与平均努塞尔特数呈反比关系。这项研究有助于理解纳米流体的行为,并在相关性和人工神经网络预测(Parrales 等人)的支持下,为应用提供了实用的见解。
Numerical Study of Convection Heat Transfer with Confinement Around a Square Cylinder Submerged in a Water-Based Nanofluid
The novelty of this work lies in the comprehensive investigation of Forced convection heat transfer a square cylinder inclined at 45° using CuO nanofluid employing a single phase approach. A heated square cylinder with constant wall temperature boundary condition, subjected to a
flowing nanofluid between two parallel walls, undergoes a laminar, steady and two-dimensional flow within a Reynolds number range of 1 < Re > 40. To obtain solutions for the flow and energy transfer, a Finite Element Method (FEM) is employed to numerically solve the governing
differential equations and boundary conditions. The objective of this work is to highlight the effects of Reynolds number (Re), confinement ratio (λ), volume concentration (Φ) and diameter of nanoparticles (dnp) on fluid flow and heat transfer
characteristics of nanofluid. To capture the effect of Φ and dnp in nanofluid, the thermo-physical-properties of CuO nanofluid are determined experimentally. In the results, at Re = 40, a secondary separation zone (recirculation zone) is observed near the
surface of the channel wall. The drag coefficient value rises as the Φ increases and the vdnp decreases, regardless of other factors such as Re and λ. Conversely, as the confinement ratio and volume fraction of nanoparticles increase, the
average Nusselt number also rises, while maintaining a constant value of Re and dnp. In contrast, the size of the nanoparticles exhibits an inverse relationship with the average Nusselt number. The study contributes to the understanding of nanofluid behavior and provides
practical insights for applications, supported by correlations and Artificial Neural Network predictions (Parrales et al.).
期刊介绍:
ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.