洛伦兹力对多孔盖驱动外壳中纳米流体强制对流的影响

IF 2.5 4区工程技术 Q2 ENGINEERING, MECHANICAL

Journal of Porous Media Pub Date : 2024-02-01 DOI:10.1615/jpormedia.2024025325

Yi Man, Mostafa Barzegar Gerdroodbary

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引用次数: 0

摘要

最近，由于纳米流体在传热方面的独特优势，其在化工工艺中的应用得到了广泛的推广。本研究通过数值模拟研究了磁场对复杂形状的盖子驱动空腔中铜氧化物-水纳米流体的流动和强制对流的影响。本研究考虑了布朗运动对纳米流体热导率的影响，并应用了涡流函数公式。为了求解最终方程，采用了基于控制体积的有限元方法。对达西数、氧化铜-水体积分数、雷诺数和哈特曼数等各种因素进行了全面的参数研究，以揭示洛伦兹力影响的方方面面。我们的研究结果表明，随着纳米流体体积分数、达西数和雷诺数的增加，传热过程加剧，而随着哈特曼数的增加，传热过程加剧。研究结果表明，在哈特曼数较高和达西数较低的情况下，纳米粒子的应用更为有效。

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Influence of Lorentz forces on forced convection of Nanofluid in a porous lid driven enclosure

Recently, the applications of nanofluid have been extensively increased in the chemical process due to its distinctive advantages in heat transfer. In the present study, numerical simulations have been conducted to investigate the effect of magnetic field on fluid flow and forced convection of the CuO-water nanofluid in a complex shaped lid driven cavity. This research considered Brownian motion effect on thermal conductivity of nanofluid and vorticity stream function formulation is applied. In order to solve final equations, control volume based finite element approach is applied. Comprehensive parametric studies on various factors such as Darcy number , CuO -water volume fraction , Reynolds and Hartmann numbers are performed to reveal all aspects of the effect of Lorentz force. Our findings showed that heat transfer process intensifies with rising of nanofluid volume fraction, Darcy and Reynolds number while it increases with augmenting of Hartmann number. Obtained results reveal that applying nanoparticles is more effective for higher values of Hartmann number and lower values of Darcy number.

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来源期刊

Journal of Porous Media 工程技术-工程：机械

CiteScore

3.50

自引率

8.70%

发文量

审稿时长

12.5 months

期刊介绍： The Journal of Porous Media publishes original full-length research articles (and technical notes) in a wide variety of areas related to porous media studies, such as mathematical modeling, numerical and experimental techniques, industrial and environmental heat and mass transfer, conduction, convection, radiation, particle transport and capillary effects, reactive flows, deformable porous media, biomedical applications, and mechanics of the porous substrate. Emphasis will be given to manuscripts that present novel findings pertinent to these areas. The journal will also consider publication of state-of-the-art reviews. Manuscripts applying known methods to previously solved problems or providing results in the absence of scientific motivation or application will not be accepted. Submitted articles should contribute to the understanding of specific scientific problems or to solution techniques that are useful in applications. Papers that link theory with computational practice to provide insight into the processes are welcome.