Effect of partial slip boundary condition on the flow and heat transfer of nanofluids past stretching sheet prescribed constant wall temperature

The objective of the present study is to analyze the development of the slip effects on the boundary layer flow and heat transfer over a stretching surface in the presence of nanoparticle fractions. In the modeling of nanofluid the dynamic effects including the Brownian motion and thermophoresis are...

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Veröffentlicht in:International journal of thermal sciences 2012-04, Vol.54, p.253-261
Hauptverfasser: Noghrehabadi, Aminreza, Pourrajab, Rashid, Ghalambaz, Mohammad
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Sprache:eng
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Zusammenfassung:The objective of the present study is to analyze the development of the slip effects on the boundary layer flow and heat transfer over a stretching surface in the presence of nanoparticle fractions. In the modeling of nanofluid the dynamic effects including the Brownian motion and thermophoresis are taken into account. In the case of constant wall temperature a similarity solution is presented. The solution depends on a Prandtl number, slip factor, Brownian motion number, Lewis number, and thermophoresis number. The dependency of the local Nusselt and local Sherwood numbers on these five parameters is numerically investigated. To the best of author's knowledge, the effects of slip boundary condition in the presence of dynamic effects of nano particles have not been investigated yet. The results of the present paper show the flow velocity and the surface shear stress on the stretching sheet and also reduced Nusselt number and reduced Sherwood number are strongly influenced by the slip parameter. ► The stretching sheet is linear and isothermal. ► Flow and heat transfer of nanofluids have been examine. ► Partial slip boundary condition is applied. ► The nanofluid model incorporates the Brownian motion and thermophoresis effects. ► The reduced Nusselt and Sherwood numbers are influenced by slip parameter.
ISSN:1290-0729
1778-4166
DOI:10.1016/j.ijthermalsci.2011.11.017