Stagnation-point flow over a stretching/shrinking sheet in a nanofluid

Abstract

An analysis is carried out to study the steady two-dimensional stagnation-point flow of a nanofluid over a stretching/shrinking sheet in its own plane. The stretching/shrinking velocity and the ambient fluid velocity are assumed to vary linearly with the distance from the stagnation point. The similarity equations are solved numerically for three types of nanoparticles, namely copper, alumina, and titania in the water-based fluid with Prandtl number Pr = 6.2. The skin friction coefficient, Nusselt number, and the velocity and temperature profiles are presented graphically and discussed. Effects of the solid volume fraction φ on the fluid flow and heat transfer characteristics are thoroughly examined. Different from a stretching sheet, it is found that the solutions for a shrinking sheet are non-unique.

A Stability Analysis on Mixed Convection Boundary Layer Flow along a Permeable Vertical Cylinder in a Porous Medium Filled with a Nanofluid and Thermal Radiation

“…This fact has attracted researchers to perform investigations on heat transfer characteristics through nanofluids. Several authors [3][4][5][6] have extensively studied and analyzed the effects of nanofluids on heat transfer.…”

Boundary layer flow and heat transfer over a stretching cylinder in a copper-water nanofluid

“…The term nanofluid refers to fluids in which nano-scale particles are suspended in the base fluid and it has been suggested by Choi [4]. The literature in nanofluid can be found in the recent book by Das et al [5] and in the review papers by Buongiorno [6], Trisaksri and Wongwises [7], Ding et al [8], Wang and Mujumdar [9,10], Kakac and Pramuanjaroenkij [11], Rohni et al [12], Bachok et al [13] and Popa et al [14]. The thermal behavior of nanofluids provides a basis for heat transfer intensification, in industrial sectors including transportation, power generation, thermal therapy for cancer treatment, chemical sectors, ventilation, air-conditioning, etc.…”

“…This paper considers the problem of boundary layer flow and heat transfer over a stretching cylinder in a Copperwater nanofluid, with water as the based fluid. The principal aim of the present investigation is to extend the problem considered by [13,[29][30][31] to the case when the cylinder is placed in a water-based nanofluid. The study has been motivated by the need to determine the thermal performance of such a system.…”

Mixed Convection Boundary Layer Flow Embedded in a Thermally Stratified Porous Medium Saturated by a Nanofluid

“…It should be also mentioned the mathematical nanofluid model proposed by Khanafer et al [30]. There are several published papers on convective heat transfer using the nanofluid equation model proposed by Tiwari and Das [29], and we mention here those by Bachok et al [31], Arifin et al [32], Tham and Nazar [33], and Rohni et al [34]. Very recently, Chamkha et al [35] have examined the effect of thermal radiation on mixed convection boundary layer flow over an isothermal vertical cone embedded in a porous medium saturated by a nanofluid.…”