Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (4): 417-432.doi: https://doi.org/10.1007/s10483-016-2046-9

• Articles •     Next Articles

Three-dimensional free bio-convection of nanofluid near stagnation point on general curved isothermal surface

Qingkai ZHAO1, Hang XU1, Longbin TAO2, A. RAEES1, Qiang SUN3   

  1. 1. State Key Laboratory of Ocean Engineering, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration(CISSE), School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
    2. School of Marine Science and Technology, Newcastle University, Newcastle upon Tyne NE1 7RU, U. K.;
    3. Department of Mechanical Engineering, National University of Singapore, 10 Kent Ridge Crescent 119260, Singapore
  • Received:2015-07-23 Revised:2015-09-18 Online:2016-04-01 Published:2016-04-01
  • Contact: Qingkai ZHAO E-mail:qkzhao@sjtu.edu.cn
  • Supported by:

     Project supported by the Program for New Century Excellent Talents in University of China (No. NCET-12-0347)

Abstract:

In this paper, the three-dimensional nanofluid bio-convection near a stagnation attachment is studied. With a set of similarity variables, the governing equations embodying the conservation of total mass, momentum, thermal energy, nanoparticles and microorganisms are reduced to a set of fully coupled nonlinear differential equations. The homotopy analysis method (HAM)-finite difference method (FDM) technique is used to obtain exact solutions. The effect of various physical parameters on distribution of the motile microorganisms and the important physical quantities of practical interests are presented and discussed.

Key words: gyrotactic microorganisms, bioconvection, nanofluid, stagnation point, homotopy analysis method (HAM)-finite difference method (FDM)

2010 MSC Number: 

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