Shape effects of spherical and nonspherical nanoparticles in mixed convection flow over a vertical stretching permeable sheet

ABSTRACT In this article, two-dimensional heat transfer mixed convection flow of a nanofluid over a vertical stretching permeable sheet is investigated. Simultaneous effects of spherical and nonspherical shapes of nanoparticles with different sizes in nanolayer are taken into account. The human engineered fluids with Nimonic 80a metal nanoparticles are used as base fluids. Analytic solutions of velocity and temperature under the influence of the Buoyancy force (assists or opposes) are first obtained and then the role of pertinent parameters, such as volume friction, mixed convection, porosity, stretching, power law index, and temperature index, is illustrated through graphs and tables. In addition, correlation of Nusselt number and skin friction corresponding to active parameters are also analyzed.

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