以水(H2O)为基液的氧化铝(Al2O3)和银(Ag)纳米颗粒混合纳米流体的广义热性能

IF 2.3 4区 工程技术 Q1 MATHEMATICS, APPLIED
N. Parveen, M. Awais, S. Awan
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引用次数: 0

摘要

利用感应磁场对Al2O3 - Ag/ H2O杂化纳米液体在拉伸片中的对流传热速率进行了数值分析。并对系统的熵产结果进行了评价。考虑到与传热有关的物理因素是产热参数和粘性耗散。通过边界层近似假设和适当的相似变换,对非线性偏微分方程组进行了建模和维数简化。采用Adam's Bashforth方法得到高精度、稳定的数值解。用图形和条形图的形式解释了流动变量、熵生成数和物理量的数值结果,以了解问题的广泛意义。可见,混合对流参数λ1数值的增大导致了速度的增大;熵生成数和努塞尔数同时抑制温度。较大的产热参数δ增加了速度和温度,但对努塞尔数和熵产数的影响相反。此外,在无滑移条件下,粘性耗散因素显著地改变了流动速率和换热速率。由于磁性混合纳米流体的应用改善了传热传质,本研究在工业、工艺过程、机械过程和电气过程的不同领域都有应用价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Generalized thermal properties of hybrid NANOLIQUID composed of aluminum oxide (Al2O3) and silver (Ag) nanoparticles with water (H2O) as base liquid
Heat transfer rate is numerically analyzed in convective flow of Al2O3‐Ag/ H2O hybrid nanoliquid through a stretching sheet by incorporating induced magnetic field. Results of entropy generation in system are evaluated as well. Considered physical factors associated with heat transfer are heat generation parameter and viscous dissipation. The system of nonlinear partial differential equations is modeled and dimensionally simplified by implementing boundary layer approximation assumption and proper similarity transformations. Adam's Bashforth method is applied to get highly accurate and stable numerical solutions. Numerical results of flow variables, entropy generation number and physical quantities are interpreted by way of graphs and bar charts to perceive the extensive significance of the problem. It is visualized that rise in numeric values of mixed convection parameter λ1 leads to enhance velocity; entropy generation number and Nusselt number while suppress temperature. High magnitude of heat generation parameter δ augments velocity and temperature but reverse behavior is observed for Nusselt number and entropy generation number. Moreover, the factor of viscous dissipation significantly modifies rate of flow and heat transfer under the effect of no‐slip condition on sheet. The present study is useful in different fields of industries, technological processes, mechanical processes, and electrical processes due to the applications of magnetic hybrid nanofluid with improved heat and mass transfer.
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来源期刊
CiteScore
3.30
自引率
8.70%
发文量
199
审稿时长
3.0 months
期刊介绍: ZAMM is one of the oldest journals in the field of applied mathematics and mechanics and is read by scientists all over the world. The aim and scope of ZAMM is the publication of new results and review articles and information on applied mathematics (mainly numerical mathematics and various applications of analysis, in particular numerical aspects of differential and integral equations), on the entire field of theoretical and applied mechanics (solid mechanics, fluid mechanics, thermodynamics). ZAMM is also open to essential contributions on mathematics in industrial applications.
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