Transient MHD Free Convection Flow and Heat Transfer of Nanofluid past an Impulsively Started Semi-Infinite Vertical Plate

Rajesh, V.; Chamkha, Ali J.; Mallesh, M. P.

doi:10.18869/acadpub.jafm.68.236.23443

Cited by 17 publications

(13 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under the abovementioned assumptions, by adopting Tiwari and Das 51 nanosuspension approach and Boussinesq model, 52 the governing equations are as follows: 5,7,10

\frac{\partial u_{1}^{*}}{\partial x^{*}} + \frac{\partial u_{2}^{*}}{\partial y^{*}} = 0

\frac{\partial u_{1}^{*}}{\partial t^{*}} + u_{1}^{*} \frac{\partial u_{1}^{*}}{\partial x^{*}} + u_{2}^{*} \frac{\partial u_{1}^{*}}{\partial y^{*}} = ν_{h n f} \frac{\partial^{2} u_{1}^{*}}{\partial y^{* 2}} + \frac{{(ρ β)}_{normalh normaln normalf}}{ρ_{normalh normaln normalf}} g false(θ^{*} - θ_{\infty}^{*} false) - \frac{σ_{h n f} B_{0}^{2} u_{1}^{*}}{ρ_{normalh normaln normalf}}

\frac{\partial θ^{*}}{\partial t^{*}} + u_{1}^{*} \frac{\partial θ^{*}}{\partial x^{*}} + u_{2}^{*} \frac{\partial θ^{*}}{\partial y^{*}} = \frac{κ_{normalh normaln normalf}}{{false(ρ C_{p} false)}_{normalh normaln normalf}} \frac{\partial^{2} θ^{*}}{\partial y^{* 2}} + \frac{Q_{0}}{{false(ρ C_{p} false)}_{normalh normaln normalf}} (θ^{*<...>}

…”

Section: Formulation Of the Problemmentioning

confidence: 99%

“…Later, Rajesh et al 6 explored the nanoliquid motion over an impulsively started vertical surface with changeable temperature. Other pertinent studies subject to nanofluid have been examined by Rajesh et al 7‐10 Seth et al 11 investigated entropy generation in a hydromagnetic nanofluid flow over a nonlinear stretching sheet with Navier's velocity slip and convective heat transfer. Additional studies on nanofluid convection flows have been archived by Das et al 12 and in the review articles of Wang and Mujumdar, 13‐15 Kakac and Pramuanjaroenkij, 16 Kasaeian et al, 17 and Lin and Yang 18 …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of internal heat generation and Lorentz force on unsteady hybrid nanoliquid flow and heat transfer along a moving plate with nonuniform temperature

2020

View full text Add to dashboard Cite

The aim of the study This study aims to explore the transient magnetohydrodynamics (MHD) boundary layer thermal convective flow of a hybrid nanoliquid past a moving vertical plate under the influence of internal heat generation and variable surface temperature. The research methodology The problem is modeled by coupled nonlinear partial differential equations with relevant boundary conditions. Formulated control equations are worked out using the robust implicit finite‐difference technique. The current work is validated with existing literature for special cases of the problem. The impact of important characteristics on hydrodynamic and thermal patterns, accompanied by skin friction parameter and Nusselt number, is scrutinized graphically. The major conclusion of the study Impacts of MHD, inner thermal generation, and variable surface temperature on nanoliquid circulation and energy transport are studied. It has been found that velocity, temperature, and skin friction coefficient increase with the increase in the heat generation parameter, whereas the Nusselt number reduces with such parameter. The significance of the study Obtained results can be used in different engineering devices, including heat exchangers, solar collectors, and chemical reactors.

show abstract

“…Under the abovementioned assumptions, by adopting Tiwari and Das 51 nanosuspension approach and Boussinesq model, 52 the governing equations are as follows: 5,7,10

\frac{\partial u_{1}^{*}}{\partial x^{*}} + \frac{\partial u_{2}^{*}}{\partial y^{*}} = 0

\frac{\partial u_{1}^{*}}{\partial t^{*}} + u_{1}^{*} \frac{\partial u_{1}^{*}}{\partial x^{*}} + u_{2}^{*} \frac{\partial u_{1}^{*}}{\partial y^{*}} = ν_{h n f} \frac{\partial^{2} u_{1}^{*}}{\partial y^{* 2}} + \frac{{(ρ β)}_{normalh normaln normalf}}{ρ_{normalh normaln normalf}} g false(θ^{*} - θ_{\infty}^{*} false) - \frac{σ_{h n f} B_{0}^{2} u_{1}^{*}}{ρ_{normalh normaln normalf}}

\frac{\partial θ^{*}}{\partial t^{*}} + u_{1}^{*} \frac{\partial θ^{*}}{\partial x^{*}} + u_{2}^{*} \frac{\partial θ^{*}}{\partial y^{*}} = \frac{κ_{normalh normaln normalf}}{{false(ρ C_{p} false)}_{normalh normaln normalf}} \frac{\partial^{2} θ^{*}}{\partial y^{* 2}} + \frac{Q_{0}}{{false(ρ C_{p} false)}_{normalh normaln normalf}} (θ^{*<...>}

…”

Section: Formulation Of the Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of internal heat generation and Lorentz force on unsteady hybrid nanoliquid flow and heat transfer along a moving plate with nonuniform temperature

2020

View full text Add to dashboard Cite

show abstract

“…Nanofluids contains Ultrafine nanoparticles suspended in a base fluid, it can be an organic solvent or water (Choi, 2009). Rajesh, Chamkha, and Mallesh (2016) presented transient MHD free convection flow and heat transfer of nanofluid using implicit finite difference numerical method. The study concluded that Cu-water nanofluid achieved an improved heat transfer rate compared with the other nanofluid for all values of t. Latiff, Uddin, and Md.…”

Section: Introductionmentioning

confidence: 99%

Effects of thermophoresis, Soret-Dufour on heat and mass transfer flow of magnetohydrodynamics non-Newtonian nanofluid over an inclined plate

Idowu

Falodun

2020

Arab Journal of Basic and Applied Sciences

View full text Add to dashboard Cite

Heat together with mass transfer of magnetohydrodynamics (MHD) non-Newtonian nanofluid flow over an inclined plate embedded in a porous medium with influence of thermophoresis and Soret-Dufour is studied. The novelty of this study is the combined effects of Soret, Dufour and thermophoresis with nanofluid flow on heat together with mass transfer. The flow is considered over an inclined plate embedded in a porous medium. Appropriate similarity transformations were used to simplify the governing coupled nonlinear partial differential equations into coupled nonlinear ordinary differential equations. A novel and accurate numerical method called spectral homotopy analysis method (SHAM) was used in solving the modelled equations. SHAM is the numerical version of the well-known homotopy analysis method (HAM). It involves the decomposition of the nonlinear equations into linear and nonlinear equations. The decomposed linear equations were solved using Chebyshev pseudospectral method. The findings revealed that the applied magnetic field gives rise to an opposing force which slows the motion of an electrically conducting fluid. Increase in the non-Newtonian Casson fluid parameter increases the skin friction factor and reduces the rate of heat and mass transfer. The present results are compared with existing work and found to be in good agreement.

show abstract

“…The use of nanofluid for industrial cooling, nuclear systems cooling, and solar collectors greatly enhances energy savings and emission reductions (Wang and Mujumdar, 2008; Singh, 2008; Sridhara et al , 2009). Meanwhile, hydromagnetic flow of nanofluid with heat transfer in rotating frame references has generated interest in astrophysical studies (Hide and Robert, 1960; Makinde, Iskander, Mabood, Khan and Tshehla, 2016; Makinde, Mabood, Khan and Tshehla, 2016; Rajesh et al , 2016; Watanabe and Pop, 1995). Other applications in the engineering and biomedical sector include MHD generators, MHD pumps, magnetic smart materials, magnetic drug targeting, arterial blood flow control, and flowmeter operation.…”

Section: Introductionmentioning

confidence: 99%

Hydromagnetic-oscillatory flow of a nanofluid with Hall effect and thermal radiation past vertical plate in a rotating porous medium

Sreedevi¹,

D.R.V.

Makinde

2018

MMMS

View full text Add to dashboard Cite

Purpose The purpose of this paper is to investigate the impact of thermal radiation interaction with Hall current, buoyancy force, and oscillatory surface temperature on hydromagnetic-mixed convective heat exchange stream of an electrically conducting nanofluid past a moving permeable plate in a porous medium within a rotating system. Design/methodology/approach Analytical closed-form solutions are obtained for both the momentum and the energy equations using the perturbation method. Findings The effects of various important parameters on velocity and temperature fields within the boundary layer are discussed for three different water-based nanofluids containing copper (Cu), aluminum oxide (Al2O3), and titanium dioxide (TiO2) as nanoparticles. Local skin friction and Nusselt number are illustrated graphically and discussed quantitatively. The results show that Hall current significantly affects the flow system. Results for some special cases of the present analysis are in good agreement with the existing literature. Originality/value The problem is relatively original to study the hydromagnetic-oscillatory flow of a nanofluid with Hall effect and thermal radiation past a vertical plate in a rotating porous medium.

show abstract

Transient MHD Free Convection Flow and Heat Transfer of Nanofluid past an Impulsively Started Semi-Infinite Vertical Plate

Cited by 17 publications

References 32 publications

Effects of internal heat generation and Lorentz force on unsteady hybrid nanoliquid flow and heat transfer along a moving plate with nonuniform temperature

Effects of internal heat generation and Lorentz force on unsteady hybrid nanoliquid flow and heat transfer along a moving plate with nonuniform temperature

Effects of thermophoresis, Soret-Dufour on heat and mass transfer flow of magnetohydrodynamics non-Newtonian nanofluid over an inclined plate

Hydromagnetic-oscillatory flow of a nanofluid with Hall effect and thermal radiation past vertical plate in a rotating porous medium

Contact Info

Product

Resources

About