Mixed convection boundary-layer flow near the stagnation-point on a vertical surface in a nanofluid

Anisah Dasman, Noor Adila Othman, Salimah Ahmad, Nor Azizah Yacob, Anuar Mohd Ishak

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The steady boundary layer flow of a nanofluid near a stagnation point on a vertical surface is investigated. The velocity of the external flow is assumed to vary linearly with the distance from the stagnation-point. The governing partial differential equations are first transformed into ordinary differential equations, before being solved numerically using the Keller box method with the help of MATLAB software. The effects of the Brownian motion parameter, thermophoresis parameter, and Lewis number on the fluid flow, heat and mass transfer characteristics are analyzed and discussed. It is found that for assisting flow, the friction at the surface decreases with an increase in Lewis number while it decreases with increasing Brownian motion and thermophoresis parameters. However, the effects of Lewis number for the opposing flow showed a different trend. Moreover, increasing the Brownian motion parameter, the thermophoresis parameter and the Lewis number are to decrease the heat transfer rate at the surface for both assisting and opposing flows, but on the other hand increase the mass transfer rate at the surface.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
PublisherAmerican Institute of Physics Inc.
Pages132-138
Number of pages7
Volume1602
ISBN (Print)9780735412361
DOIs
Publication statusPublished - 2014
Event3rd International Conference on Mathematical Sciences, ICMS 2013 - Kuala Lumpur
Duration: 17 Dec 201319 Dec 2013

Other

Other3rd International Conference on Mathematical Sciences, ICMS 2013
CityKuala Lumpur
Period17/12/1319/12/13

Fingerprint

boundary layer flow
stagnation point
Lewis numbers
thermophoresis
convection
mass transfer
heat transfer
partial differential equations
fluid flow
boxes
differential equations
friction
computer programs
trends

Keywords

  • Boundary layer
  • Brownian motion
  • Mixed convection
  • Nanofluid
  • Thermophoresis

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Dasman, A., Othman, N. A., Ahmad, S., Yacob, N. A., & Mohd Ishak, A. (2014). Mixed convection boundary-layer flow near the stagnation-point on a vertical surface in a nanofluid. In AIP Conference Proceedings (Vol. 1602, pp. 132-138). American Institute of Physics Inc.. https://doi.org/10.1063/1.4882478

Mixed convection boundary-layer flow near the stagnation-point on a vertical surface in a nanofluid. / Dasman, Anisah; Othman, Noor Adila; Ahmad, Salimah; Yacob, Nor Azizah; Mohd Ishak, Anuar.

AIP Conference Proceedings. Vol. 1602 American Institute of Physics Inc., 2014. p. 132-138.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dasman, A, Othman, NA, Ahmad, S, Yacob, NA & Mohd Ishak, A 2014, Mixed convection boundary-layer flow near the stagnation-point on a vertical surface in a nanofluid. in AIP Conference Proceedings. vol. 1602, American Institute of Physics Inc., pp. 132-138, 3rd International Conference on Mathematical Sciences, ICMS 2013, Kuala Lumpur, 17/12/13. https://doi.org/10.1063/1.4882478
Dasman A, Othman NA, Ahmad S, Yacob NA, Mohd Ishak A. Mixed convection boundary-layer flow near the stagnation-point on a vertical surface in a nanofluid. In AIP Conference Proceedings. Vol. 1602. American Institute of Physics Inc. 2014. p. 132-138 https://doi.org/10.1063/1.4882478
Dasman, Anisah ; Othman, Noor Adila ; Ahmad, Salimah ; Yacob, Nor Azizah ; Mohd Ishak, Anuar. / Mixed convection boundary-layer flow near the stagnation-point on a vertical surface in a nanofluid. AIP Conference Proceedings. Vol. 1602 American Institute of Physics Inc., 2014. pp. 132-138
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AB - The steady boundary layer flow of a nanofluid near a stagnation point on a vertical surface is investigated. The velocity of the external flow is assumed to vary linearly with the distance from the stagnation-point. The governing partial differential equations are first transformed into ordinary differential equations, before being solved numerically using the Keller box method with the help of MATLAB software. The effects of the Brownian motion parameter, thermophoresis parameter, and Lewis number on the fluid flow, heat and mass transfer characteristics are analyzed and discussed. It is found that for assisting flow, the friction at the surface decreases with an increase in Lewis number while it decreases with increasing Brownian motion and thermophoresis parameters. However, the effects of Lewis number for the opposing flow showed a different trend. Moreover, increasing the Brownian motion parameter, the thermophoresis parameter and the Lewis number are to decrease the heat transfer rate at the surface for both assisting and opposing flows, but on the other hand increase the mass transfer rate at the surface.

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