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首页> 外文期刊>Journal of Heat Transfer >Computational Study of Three-Dimensional Stagnation Point Nanofluid Bioconvection Flow on a Moving Surface With Anisotropic Slip and Thermal Jump Effect
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Computational Study of Three-Dimensional Stagnation Point Nanofluid Bioconvection Flow on a Moving Surface With Anisotropic Slip and Thermal Jump Effect

机译：具有各向异性滑移和热跳效应的运动表面上三维停滞点纳米流体生物对流的计算研究

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摘要

The effects of anisotropic slip and thermal jump on the three-dimensional stagnation point flow of nanofluid containing microorganisms from a moving surface have been investigated numerically. Anisotropic slip takes place on geometrically striated surfaces and superhydrophobic strips. Zero mass flux of nanopar-ticles at the surface is applied to achieve practically applicable results. Using appropriate similarity transformations, the transport equations are reduced to a system of nonlinear ordinary differential equations with coupled boundary conditions. Numerical solutions are reported by means of very efficient numerical method provided by the symbolic code Maple. The influences of the emerging parameters on the dimensionless velocity, temperature, nanoparticle volumetric fraction, density of motile microorganism profiles, as well as the local skin friction coefficient, the local Nusselt number, and the local density of the motile microorganisms are displayed graphically and illustrated in detail. The computations demonstrate that the skin friction along the x-axis is enhanced with the velocity slip parameter along the y-axis. The converse response is observed for the dimensionless skin friction along the y-axis. The heat transfer rate is increased with greater velocity slip effects but depressed with the thermal slip parameter. The local Nusselt number is increased with Prandtl number and decreased with the thermophoresis parameter. The local density for motile microorganisms is enhanced with velocity slip parameters and depressed with the bioconvection Lewis number, thermophoresis, and Peclet number. Numerical results are validated where possible with published results and excellent correlation is achieved.
机译：数值研究了各向异性滑移和热跃变对含纳米流体从运动表面的微生物的三维停滞点流动的影响。各向异性滑移发生在几何条纹表面和超疏水条上。在表面使用零质量的纳米粒子通量来获得实际可应用的结果。使用适当的相似性变换，运输方程式被简化为带有耦合边界条件的非线性常微分方程组。通过符号代码Maple提供的非常有效的数值方法来报告数值解。图形显示并说明了新兴参数对无量纲速度，温度，纳米颗粒体积分数，运动微生物分布图的密度以及皮肤局部摩擦系数，局部努塞尔数和运动微生物局部密度的影响。详细。计算表明，沿x轴的皮肤摩擦随着沿y轴的速度滑移参数而增加。对于沿y轴无量纲的皮肤摩擦，观察到相反的响应。传热速率随着速度滑移效应的增加而增加，但随着热滑移参数的降低而降低。局部Nusselt数随Prandtl数增加，随热泳参数减少。运动微生物的局部密度随速度滑移参数而增加，并随生物对流路易斯数，热泳和Peclet数而降低。数值结果将在可能的情况下与已发布的结果进行验证，并且可以实现出色的相关性。

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  • 来源
    《Journal of Heat Transfer》 |2016年第10期|104502.1-104502.7|共7页
  • 作者

    M. J. Uddin; W. A. Khan; A. I. Md. Ismail; O. Anwar Beg;

  • 作者单位

    Head of the Mathematics Department, American International University-Bangladesh, Banani, Dhaka 1213, Bangladesh;

    Department of Mechanical and Industrial Engineering, College of Engineering, Majmaah University, Majmaah 11952, Saudi Arabia;

    School of Mathematical Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia;

    Spray Research Group, Petroleum and Gas Engineering Division, School of Computing, Science and Engineering (CSE), University of Salford, Room G77, Newton Building, Salford M54WT, UK;

  • 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

    three-dimensional gyrotactic bio-convection; anisotropic slip; microrganisms; thermal jump; zero mass flux;

    机译：三维旋流生物对流;各向异性滑移微生物;热跳零质量通量;

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