The Viscous Dissipation Effects on the Mixed Convection Boundary Layer Flow on a Horizontal Circular Cylinder

Mohamed, Muhammad Khairul Anuar; Salleh, Mohd Zuki; Noar, Nor Aida Zuraimi Md; Ishak, Anuar Mohd

doi:10.11113/jt.v78.8304

Cited by 15 publications

(14 citation statements)

References 13 publications

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“…Figure 2B shows that the rate at which heat is transferred is higher for a heated cylinder and reduced for a cooled cylinder. These results are in excellent agreement with the results in Nazar et al 44 and Mohamed et al 52 Similarly, there is a positive correlation between the present results in Figure 2C,D and those given by Nazar et al 44 and Mohamed et al 52 We note from Figure2C,D that when the Eckert number is increased, the skin friction coefficient slightly increases close to the upper stagnation point of the circular cylinder, while the Nusselt number is seen to decrease as the flow moves from the lower stagnation point to the upper stagnation point.…”

Section: Methods Validationsupporting

confidence: 92%

Homogeneous–heterogeneous reactions in flow past a horizontal circular cylinder with an induced magnetic field and nonlinear thermal radiation

Oyelakin

Sibanda

2019

Heat Trans

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In this study, we investigate the steady, two-dimensional, incompressible viscous boundary layer flow of an electrically conducting Casson fluid over a horizontal circular cylinder. The cylinder is impermeable and the flow is assumed to be subject to homogeneous-heterogeneous reactions. The homogeneous-heterogeneous reactions are also assumed to have unequal diffusion coefficients. The novelty in this study is in the consideration of a nonlinear radiative flux together with Joule heating and an induced magnetic field. The magnetodynamic pressure gradient in induced magnetic flows is important as it gives insights into the boundary layer characteristics. The flow velocity and the magnetic field in the free stream are assumed to be uniform and directed vertically over the cylinder. The partial differential equations are solved using the bivariate spectral quasi-linearization method. An analysis and comparison of results with existing literature are provided. Among the findings, we show, inter alia, that the reactants dominate while the autocatalysts have a negligible impact on the flow progression. The skin friction coefficient decreases with an increase in the Casson parameter and increases when the Joule heating parameter is increased. The rate of heat transfer increases with increasing the Casson parameter and decreases when the Joule heating parameter is increased.bivariate spectral quasi-linearization method, homogeneous-heterogeneous, induced magnetic field, nonlinear radiative flux, unequal diffusivities

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Section: Methods Validationsupporting

confidence: 92%

Homogeneous–heterogeneous reactions in flow past a horizontal circular cylinder with an induced magnetic field and nonlinear thermal radiation

Oyelakin

Sibanda

2019

Heat Trans

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“…The rise in temperature is because of the work done against the viscous forces, which irreversibly convert the kinetic energy of the fluid into internal energy. Mohamed et al [13] examined the impact of viscous dissipation on heat transfer in mixed convection flow past over a circular cylinder. Recently, Afridi and Qasim [14] performed the irreversibility analysis in a three-dimensional flow with viscous dissipation.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Rosseland thermal radiation and energy dissipation effects on entropy generation in CNTs suspended nanofluids flow over a thin needle

et al. 2018

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In this paper, we examine thermal radiation effect of the nonlinear form on the dissipative nanofluids containing carbon nanotubes past a moving horizontal thin needle. We also perform a second law analysis with viscous dissipation. Single-wall carbon nanotube and multiple-wall carbon nanotube drop in H 2 O base fluid. Introducing suitable dimensionless variables, we reduce the governing equations to self-similar nonlinear differential equations. Matlab in-built boundary value solver bvp4c and shooting method are applied for the solution of the reduced set of self-similar differential equations. The numerical results thus obtained are compared, which agree well with respect to desired accuracy. Various graphs are depicted and illustrate qualitatively the influence of flow controlling parameters such as Eckert number, heating parameter, radiation parameters, nanoparticles solid volume fraction, and size of thin needle on entropy generation, temperature distribution, and Bejan number.

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“…The same effect was then examined by Yirga and Shankar (2013) in a nanofluid induced by a stretching sheet. Mohamed et al (2016) tackled the viscous dissipation effect from a horizontal circular cylinder in a viscous fluid. Of late, Ferdows et al (2017) explored the viscous dissipation effect on the boundary layer flow and heat transfer from a stretching sheet.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Model of Mixed Convection Boundary Layer Flow over a Horizontal Circular Cylinder Filled in a Jeffrey Fluid with Viscous Dissipation Effect

Zokri¹,

Arifin²,

Mohamed³

et al. 2018

JSM

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This paper delves into the problem of mixed convection boundary layer flow from a horizontal circular cylinder filled in a Jeffrey fluid with viscous dissipation effect. Both cases of cooled and heated cylinders are discussed. The governing equations which have been converted into a dimensionless form using the appropriate non-dimensional variables are solved numerically through the Keller-box method. A comparative study is performed and authentication of the present results with documented outcomes from formerly published works is excellently achieved. Tabular and graphical representations of the numerical results are executed for the specified distributions, considering the mixed convection parameter, Jeffrey fluid parameters and the Prandtl and Eckert numbers. Interestingly, boundary layer separation for mixed convection parameter happens for some positive (assisting flow) and negative (opposing flow) values. Strong assisting flow means the cylinder is heated, which causes the delay in boundary layer separation, whereas strong opposing flow means the cylinder is cooled, which conveys the separation point close to the lower stagnation point. Contradictory behaviours of both Jeffrey fluid parameters are observed over the velocity and temperature profiles together with the skin friction coefficient and Nusselt number. The increase of the Prandtl number leads to the decrement of the temperature profile, while the increase of the Eckert number results in the slight increment of the skin friction coefficient and decrement of the Nusselt number. Both velocity and temperature profiles of Eckert number show no effects at the lower stagnation point of the cylinder.

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The Viscous Dissipation Effects on the Mixed Convection Boundary Layer Flow on a Horizontal Circular Cylinder

Cited by 15 publications

References 13 publications

Homogeneous–heterogeneous reactions in flow past a horizontal circular cylinder with an induced magnetic field and nonlinear thermal radiation

Homogeneous–heterogeneous reactions in flow past a horizontal circular cylinder with an induced magnetic field and nonlinear thermal radiation

Nonlinear Rosseland thermal radiation and energy dissipation effects on entropy generation in CNTs suspended nanofluids flow over a thin needle

Mathematical Model of Mixed Convection Boundary Layer Flow over a Horizontal Circular Cylinder Filled in a Jeffrey Fluid with Viscous Dissipation Effect

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