Falkner–Skan problem for a static or moving wedge in nanofluids

Yacob, Nor Azizah; Ishak, Anuar Mohd; Pop, Ioan

doi:10.1016/j.ijthermalsci.2010.10.008

Cited by 219 publications

(141 citation statements)

References 36 publications

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“…In Table 2, the present results of ) 0 ( f ′ ′ is compared with those of Yacob et al [31] and Rahman et al [32]. The results show a very good agreement with their results since the errors are found to be very less.…”

Section: Resultssupporting

confidence: 75%

Radiative Heat Transfer on Nanofluids Flow Over a Porous Convective Surface in the Presence of Magnetic Field

Kandasamy¹,

Mohamad²

2015

J Appl Mech Eng

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Nanofluids have been considered for applications as advanced heat transfer fluids for almost two decades. Nanofluid is a new kind of heat transfer medium, containing nanoparticles which are uniformly and stably distributed in a base fluid.Convection in nanofluids plays a key role in enhancing the rate of heat transfer either for heating or cooling nanodevices.In this paper, we investigate theoretically the impact of a convective surface on the heat transfer characteristics of water-based nanofluids over a static or moving wedge in the presence of magnetic field with variable stream condition. The governing nonlinear partial differential equations are made dimensionless with the similarity transformations. Numerical simulations are carried out through the very robust computer algebra software MAPLE 18 to investigate the effects of various pertinent parameters on the flow field. The results show that the temperature distribution in a nanofluid in the presence of thermal radiation with magnetic field significantly depends on the surface convection parameter. This finding is new and has not been reported in any open literature.important engineering applications in thermal energy collectors and the porous medium acts as a means to absorb or emit radiant energy that is transferred to or from a fluid. Generally, the fluid itself can be assumed to be transparent to radiation, because the dimensions for radiative heat transfer among the solid structure elements of the porous medium are usually much less than the radiative mean free path for scattering or absorption in the fluid. In this new age of energy awareness, our lack of abundant sources of clean energy and the widespread dissemination of battery operated devices, such as cell-phones and laptops, have accented the necessity for a smart technological handling of energetic resources.Due to many engineering applications in aerodynamics, geothermal systems, crude oil extractions, ground water pollution, thermal insulation, heat exchanger, storage of nuclear waste, etc., convective flows over wedge shaped bodies have been extensively studied since the early formulation of the problem in 1931 by Falkner and Skan. They first studied two-dimensional flow of viscous incompressible fluid over a wedge. Since then many investigators have studied and reported results on wedge flow considering various flow conditions. Lin and Lin [18] [24]. Three properties that make nanofluids promising coolants are: (i) increased thermal conductivity, (ii) increased single-phase heat transfer, and (iii) increased critical heat flux. Research has shown that relatively small amounts of nanoparticles (5% or less volume fraction), can enhance thermal conductivity of the base fluid to a large extent. Therefore, exploiting the unique characteristics of nanoparticles, nanofluids are created with two features very important for heat

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Section: Resultssupporting

confidence: 75%

Radiative Heat Transfer on Nanofluids Flow Over a Porous Convective Surface in the Presence of Magnetic Field

Kandasamy¹,

Mohamad²

2015

J Appl Mech Eng

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“…The concentration profile affects in very different manner when increasing the injection parameter. That is, there is no change in boundary layer when 1 and then the concentration boundary layer decreases on increasing s values. …”

Section: Resultsmentioning

confidence: 95%

“…Nanofluid is the dilute liquid suspensions of nanoparticles into base liquids such as water, oil, ethylene glycol etc. Yacob et al [1] investigated the Falkner-Skan problem past a static or moving wedge immersed in nanofluid. Chamkha et al [2] presented the radiation effect on mixed convection flow over an isothermal vertical wedge embedded in a porous medium saturated with nanofluid.…”

Section: Introductionmentioning

confidence: 99%

Convective heat transfer of nanofluid past a wedge in the presence of heat generation/absorption with suction/injection

Kasmani¹,

Sivasankaran²,

Siri³

2014

AIP Conference Proceedings

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“…A very small amount of guest nanoparticles, when dispersed uniformly and suspended stably in host fluids, can provide dramatic improvements in the thermal properties of the host fluids. According to Yacob et al [18], nanofluids are produced by dispersing the nanometer-scale solid particles into base liquids with low thermal conductivity such as water and ethylene glycol. Nanoparticles are usually made of metal, metal oxide, carbide, nitride and even immiscible nano-scale liquid droplets.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Unsteady Mixed Convection Flow near the Stagnation Point of a Heated Vertical Plate embedded in a Nanofluid-Saturated Porous Medium by Self-Similar Technique

Abdullah¹,

Ibrahim²,

Gawad³

et al. 2015

AJEE

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This paper aims to study the problem of unsteady mixed convection in a stagnation flow on a heated vertical surface embedded in a nanofluid-saturated porous medium. The employed mathematical model for the nanofluid takes into account the effects of Brownian motion and thermophoresis. The presence of a solid matrix, which exerts first and second resistance parameters, is considered in this study. The self-similar solutions for the system of equations governing the problem are obtained. The resulting system of ordinary differential equations that govern the flow is solved numerically using fourthfifth order Runge-Kutta with shooting method. Numerical results for the dimensionless velocity, temperature and nanoparticle volume fraction as well as skin friction, Nusselt number and Sherwood number are produced for different values of the influence parameters.

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Falkner–Skan problem for a static or moving wedge in nanofluids

Cited by 219 publications

References 36 publications

Radiative Heat Transfer on Nanofluids Flow Over a Porous Convective Surface in the Presence of Magnetic Field

Radiative Heat Transfer on Nanofluids Flow Over a Porous Convective Surface in the Presence of Magnetic Field

Convective heat transfer of nanofluid past a wedge in the presence of heat generation/absorption with suction/injection

Investigation of Unsteady Mixed Convection Flow near the Stagnation Point of a Heated Vertical Plate embedded in a Nanofluid-Saturated Porous Medium by Self-Similar Technique

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