Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (10): 1325-1340.doi: https://doi.org/10.1007/s10483-016-2140-9

• 论文 • 上一篇    下一篇

Two-component modeling for non-Newtonian nanofluid slip flow and heat transfer over sheet: Lie group approach

P. RANA1, M. J. UDDIN2,3, Y. GUPTA1, A. I. M. ISMAIL2   

  1. 1. Department of Mathematics, Jaypee Institute of Information Technology, Noida 201307, India;
    2. School of Mathematical Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia;
    3. Department of Mathematics, American International University-Bangladesh, Dhaka 1213, Bangladesh
  • 收稿日期:2016-03-17 修回日期:2016-06-01 出版日期:2016-10-01 发布日期:2016-10-01
  • 通讯作者: P. RANA E-mail:puneetranaiitr@gmail.com
  • 基金资助:

    Project supported by Universiti Sains Malaysia (No.1001/PMATHS/811252)

Two-component modeling for non-Newtonian nanofluid slip flow and heat transfer over sheet: Lie group approach

P. RANA1, M. J. UDDIN2,3, Y. GUPTA1, A. I. M. ISMAIL2   

  1. 1. Department of Mathematics, Jaypee Institute of Information Technology, Noida 201307, India;
    2. School of Mathematical Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia;
    3. Department of Mathematics, American International University-Bangladesh, Dhaka 1213, Bangladesh
  • Received:2016-03-17 Revised:2016-06-01 Online:2016-10-01 Published:2016-10-01
  • Supported by:

    Project supported by Universiti Sains Malaysia (No.1001/PMATHS/811252)

摘要:

The present paper deals with the multiple solutions and their stability analysis of non-Newtonian micropolar nanofluid slip flow past a shrinking sheet in the presence of a passively controlled nanoparticle boundary condition. The Lie group transformation is used to find the similarity transformations which transform the governing transport equations to a system of coupled ordinary differential equations with boundary conditions. These coupled set of ordinary differential equation is then solved using the RungeKutta-Fehlberg fourth-fifth order (RKF45) method and the ode15s solver in MATLAB. For stability analysis, the eigenvalue problem is solved to check the physically realizable solution. The upper branch is found to be stable, whereas the lower branch is unstable. The critical values (turning points) for suction (0< sc< s) and the shrinking parameter (χc< χ< 0) are also shown graphically for both no-slip and multiple-slip conditions. Multiple regression analysis for the stable solution is carried out to investigate the impact of various pertinent parameters on heat transfer rates. The Nusselt number is found to be a decreasing function of the thermophoresis and Brownian motion parameters.

关键词: Lie group, stability, multiple-slip, micropolar nanofluid, MATLAB

Abstract:

The present paper deals with the multiple solutions and their stability analysis of non-Newtonian micropolar nanofluid slip flow past a shrinking sheet in the presence of a passively controlled nanoparticle boundary condition. The Lie group transformation is used to find the similarity transformations which transform the governing transport equations to a system of coupled ordinary differential equations with boundary conditions. These coupled set of ordinary differential equation is then solved using the RungeKutta-Fehlberg fourth-fifth order (RKF45) method and the ode15s solver in MATLAB. For stability analysis, the eigenvalue problem is solved to check the physically realizable solution. The upper branch is found to be stable, whereas the lower branch is unstable. The critical values (turning points) for suction (0< sc< s) and the shrinking parameter (χc< χ< 0) are also shown graphically for both no-slip and multiple-slip conditions. Multiple regression analysis for the stable solution is carried out to investigate the impact of various pertinent parameters on heat transfer rates. The Nusselt number is found to be a decreasing function of the thermophoresis and Brownian motion parameters.

Key words: Lie group, stability, micropolar nanofluid, MATLAB, multiple-slip

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