›› 2014, Vol. 23 ›› Issue (7): 74401-074401.doi: 10.1088/1674-1056/23/7/074401

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Flow and heat transfer of a nanofluid over a hyperbolically stretching sheet

A. Ahmada, S. Asghara b, A. Alsaedib   

  1. a COMSATS Institute of Information Technology, Islamabad, Pakistan;
    b Distinguished Adjunct Professor, Department of Mathematics, King Abdul Aziz University, Jeddah, Saudi Arabia
  • 收稿日期:2013-09-13 修回日期:2014-01-01 出版日期:2014-07-15 发布日期:2014-07-15
  • 基金资助:
    Project supported by the CⅡ T Research Grant Program (CRGP) of COMSATS Institute of Information Technology, Islamabad, Pakistan (Grant No. 16-69/CRGP/CⅡ T/IBD/10/711).

Flow and heat transfer of a nanofluid over a hyperbolically stretching sheet

A. Ahmada, S. Asghara b, A. Alsaedib   

  1. a COMSATS Institute of Information Technology, Islamabad, Pakistan;
    b Distinguished Adjunct Professor, Department of Mathematics, King Abdul Aziz University, Jeddah, Saudi Arabia
  • Received:2013-09-13 Revised:2014-01-01 Online:2014-07-15 Published:2014-07-15
  • Contact: A. Ahmad E-mail:adeelahmed@comsats.edu.pk
  • About author:44.20.+b; 44.05.+e; 47.15.-x
  • Supported by:
    Project supported by the CⅡ T Research Grant Program (CRGP) of COMSATS Institute of Information Technology, Islamabad, Pakistan (Grant No. 16-69/CRGP/CⅡ T/IBD/10/711).

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摘要： This article explores the boundary layer flow and heat transfer of a viscous nanofluid bounded by a hyperbolically stretching sheet. Effects of Brownian and thermophoretic diffusions on heat transfer and concentration of nanoparticles are given due attention. The resulting nonlinear problems are computed for analytic and numerical solutions. The effects of Brownian motion and thermophoretic property are found to increase the temperature of the medium and reduce the heat transfer rate. The thermophoretic property thus enriches the concentration while the Brownian motion reduces the concentration of the nanoparticles in the fluid. Opposite effects of these properties are observed on the Sherwood number.

关键词: hyperbolically stretching sheet, nanofluid, boundary layer flow heat transfer

Abstract: This article explores the boundary layer flow and heat transfer of a viscous nanofluid bounded by a hyperbolically stretching sheet. Effects of Brownian and thermophoretic diffusions on heat transfer and concentration of nanoparticles are given due attention. The resulting nonlinear problems are computed for analytic and numerical solutions. The effects of Brownian motion and thermophoretic property are found to increase the temperature of the medium and reduce the heat transfer rate. The thermophoretic property thus enriches the concentration while the Brownian motion reduces the concentration of the nanoparticles in the fluid. Opposite effects of these properties are observed on the Sherwood number.

Key words: hyperbolically stretching sheet, nanofluid, boundary layer flow heat transfer

中图分类号:  (Boundary layer heat flow)

  • 44.20.+b
44.05.+e (Analytical and numerical techniques) 47.15.-x (Laminar flows)