Lattice Boltzmann Method for simulation of magnetic field effect on hydrothermal behavior of nanofluid in a cubic cavity
Lattice Boltzmann Method for simulation of magnetic field effect on hydrothermal behavior of nanofluid in a cubic cavity
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DOI：
10.1016/j.physa.2015.03.009
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发表时间：
2015-08
影响因子：
3.3
通讯作者：
M. Sheikholeslami;M. G. Bandpy;H. Ashorynejad
中科院分区：
文献类型：
--
作者：
M. Sheikholeslami;M. G. Bandpy;H. Ashorynejad
这篇文章重复了一篇已经发表在Journal of Magnetism and Magnetic Materials 369（2014）69-80 http：//dx上的论文的重要部分。doi。org/10.1016/j. jmmm。2014.06. 017.提交论文发表的条件之一是作者明确声明该论文以前没有发表过，也没有考虑在其他地方发表。因此，这篇文章代表了对科学出版系统的滥用。科学界对这一问题的看法非常强烈，在此向该期刊的读者道歉，因为在提交过程中没有发现这一问题。Physica A 432（2015）58 - 70目录列表可在ScienceDirect Physica A期刊主页：www.爱思唯尔。com/locate/physa晶格玻尔兹曼方法模拟磁场对立方腔中纳米流体热液行为的影响Mohsen Sheikholeslami a，拉什特，伊朗伊斯兰共和国巴布尔理工大学机械工程系Mohsen Gorji Bandpy a，Hamid Reza Ashorynejad ba，伊朗伊斯兰共和国巴布尔理工大学机械工程系B Guilan大学机械工程系伊朗伊斯兰共和国强调·LBM应用于求解控制方程。·研究了磁场对立方腔体的影响。·Nu随着Ra和Nu的增加而增加。·Nu随着Ha的增加而减少。articleinfo文章历史：2014年12月22日接收于2015年2月13日可在线获取2015年3月16日关键词：格子玻尔兹曼方法立方腔磁流体纳米流体自由对流传热摘要在这项研究中，格子玻尔兹曼方法被应用于模拟磁场对立方腔中纳米流体流动和对流传热的影响。外壳中充满了Al 2 O3-水纳米流体。应用Koo-Kleinstreuer-Li关联式计算纳米流体的有效粘度和导热系数。研究了哈特曼数、纳米颗粒体积分数和瑞利数等参数对流动和传热的影响。结果表明，强化传热与哈特曼数成正比，与瑞利数成反比。努塞尔数随纳米粒子体积分数和瑞利数的增加而增加，随哈特曼数的增加而减小。© 2015 Elsevier BV版权所有。1.介绍格子玻尔兹曼方法（LBM）已被建立为一个非常有效的数值工具，为各种各样的复杂的流体流动现象，传统的方法是有问题的。LBM的动力学性质使其与其他数值方法的区别主要体现在三个方面。首先，LBM的对流算子在速度空间中是线性的，因此与某些宏观CFD方法（如Navier-Stokes方程求解器）相比，计算工作量大大减少。其次，LBM的压力可以直接使用状态方程计算，而不像不可压缩Navier-Stokes方程的直接数值模拟那样必须从泊松方程获得压力。第三，LBM利用相空间中的最小速度集合，因此将微观分布函数与宏观量相关联的变换大大简化。Mohamad和Kuzmin [1]使用格子Boltzmann方法（LBM）对自然对流问题进行了详细的分析。结果表明，LBM在模拟自然对流方面具有很高的效率。在同心环之间的自由对流换热冷对应.
The article duplicates significant parts of a paper that had already appeared in the Journal of Magnetism and Magnetic Materials 369 (2014) 69–80 http://dx. doi. org/10.1016/j. jmmm. 2014.06. 017. One of the conditions of submission of a paper for publication is that authors declare explicitly that the paper has not been previously published and is not under consideration for publication elsewhere. As such this article represents a misuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.Physica A 432 (2015) 58–70 Contents lists available at ScienceDirect Physica A journal homepage: www. elsevier. com/locate/physa Lattice Boltzmann Method for simulation of magnetic field effect on hydrothermal behavior of nanofluid in a cubic cavity Mohsen Sheikholeslami a, ∗, Mofid Gorji Bandpy a, Hamid Reza Ashorynejad ba Department of Mechanical Engineering, Babol University of Technology, Babol, Islamic Republic of Iran b Department of Mechanical Engineering, University of Guilan, Rasht, Islamic Republic of Iran highlights • LBM is applied to solve the governing equations. • Effect of magnetic field is studied in a cubic cavity. • Nu increases with increase of φ and Ra. • Nu decreases with increase of Ha. articleinfo Article history: Received 22 December 2014 Received in revised form 13 February 2015 Available online 16 March 2015 Keywords: Lattice Boltzmann Method Cubic cavity MHD Nanofluid Free convection Heat transfer abstract In this study, Lattice Boltzmann Method is applied in order to simulate the magnetic field effect onnanofluid flowand convective heat transfer in a cubic cavity. The enclosure is filled with Al2O3–water nanofluid. Koo–Kleinstreuer–Li correlation is applied to calculate the effective viscosity and thermal conductivity of nanofluid. The effects of active parameters such as Hartmann number, nanoparticle volume fraction and Rayleigh number on flow and heat transfer have been examined. Results indicate that enhancement in heat transfer has direct relationship with Hartmann number while it has inverse relationship with Rayleigh number. Nusselt number increases with increase of nanoparticle volume fraction and Rayleigh number while it decreases with increase of Hartmann number. © 2015 Elsevier BV All rights reserved. 1. Introduction Lattice Boltzmann method (LBM) has been established to be a very effective numerical tool for a broad variety of complex fluid flow phenomena that are problematic for conventional methods. The kinetic nature of the LBM separates it from other numerical methods mainly in three aspects. First, the convection operator of the LBM is linear in velocity space so computational efforts are greatly reduced as compared to those of some macroscopic CFD methods such as the Navier–Stokes equation solvers. Second, the pressure of the LBM can be directly calculated using an equation of state, unlike the direct numerical simulation of the incompressible Navier–Stokes equations, in which the pressure must be obtained from the Poisson equation. Third, the LBM utilizes a minimal set of velocities in phase space, therefore the transformation relating the microscopic distribution function and macroscopic quantities is greatly simplified. Mohamad and Kuzmin [1] used Lattice Boltzmann Method (LBM) to present a detailed analysis of natural convection problem. They showed the high efficiency of the LBM in simulating Natural convection. Free convection heat transfer in a concentric annulus between a cold ∗Corresponding …