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首页> 外文期刊>International Journal of Heat and Mass Transfer >MHD boundary layer flow of a nanofluid containing gyrotactic microorganisms past a vertical plate with Navier slip
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MHD boundary layer flow of a nanofluid containing gyrotactic microorganisms past a vertical plate with Navier slip

机译：含有回旋微生物的纳米流体的MHD边界层流过带有Navier滑移的垂直板

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摘要

The combined effects of Navier slip and magnetic field on boundary layer flow with heat and mass transfer of a water-based nanofluid containing gyrotactic microorganisms over a vertical plate are investigated. Using Oberbeck-Boussinesq approximation and similarity transformation, the nonlinear model equations are obtained and tackled numerically to obtain the dimensionless velocity, temperature, nano-particle concentration and density of motile microorganisms together with the reduced Nusselt, Sherwood and motile microorganism numbers. The present numerical results are compared with available data and are found in an excellent agreement. Pertinent results are presented graphically and discussed quantitatively with respect to variation in the controlling parameters. It is observed that the magnetic field suppresses the dimensionless velocity and increases the dimensionless temperature inside the boundary layers. The bioconvection parameters tend to reduce the concentration of the rescaled density of motile microorganisms. It is also found that the reduced Nusselt, Sherwood and density numbers of microorganisms depend strongly upon the magnetic, buoyancy, nanofluid and bioconvection parameters.
机译：研究了Navier滑移和磁场对边界层流动的综合影响，以及在垂直平板上传热和传质的水基纳米流体，其中含有旋回微生物。使用Oberbeck-Boussinesq逼近和相似度转换，获得非线性模型方程并进行数值求解，以得到运动微生物的无量纲速度，温度，纳米颗粒浓度和密度，以及减少的Nusselt，Sherwood和运动微生物数量。将目前的数值结果与可用数据进行比较，发现它们之间具有很好的一致性。有关控制参数的变化，以图形方式给出了相关结果并进行了定量讨论。观察到磁场抑制了边界层内部的无量纲速度并增加了无量纲温度。生物对流参数趋向于降低运动微生物的重新缩放密度的浓度。还发现减少的Nusselt，Sherwood和微生物的密度数在很大程度上取决于磁性，浮力，纳米流体和生物对流参数。

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  • 作者

    W.A. Khan; O.D. Makinde; Z.H. Khan;

  • 作者单位

    Department of Engineering Sciences, PN Engineering College, National University of Sciences and Technology, Karachi 75350, Pakistan;

    Institute for Advanced Research in Mathematical Modelling and Computations, Cape Peninsula University of Technology, P.O. Box 1906, Bellville 7535, South Africa;

    School of Mathematical Sciences, Peking University, Beijing 100871, PR China,Department of Mathematics, University of Malakand, Dir (Lower), Khyber Pakhtunkhwa, Pakistan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bioconvection; MHD; Boundary layer; Nanofluid; Gyrotactic microorganisms; Navier slip;

    机译：生物对流;MHD;边界层;纳米流体旋回微生物;纳维耶滑;

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