Entropy generation in nanofluid flow of Walters‐B fluid with homogeneous‐heterogeneous reactions

Qayyum, Sumaira; Hayat, Tasawar; Jabeen, Sumaira; Alsaedi, Ahmed

doi:10.1002/mma.5997

Cited by 12 publications

(11 citation statements)

References 34 publications

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“…Two-dimensional buoyancy-driven magnetized thermal and mass transport behavior of Walters-B fluid about an elongating sheet under the impression of viscous and Joule dissipation, heat source/ sink and Soret impacts with chemical reaction results the highly nonlinear coupled system of flow equations and which are converted to nondimensional form by adopting the similarity transformations with essential boundary conditions. On the basis of the available literature review we have noticed that the available direct techniques fail to give the self-similar solution of Equations ( 23)- (25) with Equation (26). Thus, to overcome this difficulty, we have implemented the standard bvp4c Matlab function.…”

Section: Numerical Approachmentioning

confidence: 99%

Buoyancy‐motivated dissipative free convection flow of Walters‐B fluid along a stretching sheet under the Soret effect and Lorentz force influence

et al. 2022

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A two-dimensional numerical model has been framed to investigate the effect of buoyancy forces on magnetized free convective Walters-B fluid flow over a stretching sheet with Soret effect, heat radiation, thermal source/sink, and viscous dissipation. The current physical model is developed based on the stretching sheet geometry. The impact of Lorentz force on the nonlinear system is investigated and considered in the velocity equation. The influence of thermal radiation, heat source/sink, viscous dissipation, and Joule heating is considered in the energy equation. The effect of Soret parameter and chemical reaction on mass transfer is accounted in the concentration equation. The current physical model is governed by the highly coupled nonlinear system of partial differential equations. Owing to the inadequacy in the analytical techniques, the obtained governing equations are solved by using the bvp4c Matlab function via similarity transformations approach. Numerical computations are performed for the varying values of physical parameters, which are expressed in terms of tables and graphs. Magnifying viscoelastic parameter decays the velocity profile and enhances the thermal and

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Section: Numerical Approachmentioning

confidence: 99%

Buoyancy‐motivated dissipative free convection flow of Walters‐B fluid along a stretching sheet under the Soret effect and Lorentz force influence

et al. 2022

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“…By using this model, the boundary layer flow of several fluids through different surfaces are discussed by various researchers. 23–27 In all these papers they discussed the impact of both homogeneous and heterogeneous reaction parameters on concentration gradient.…”

Section: Introductionmentioning

confidence: 99%

Theoretical analysis of SWCNT- MWCNT/H2O hybrid flow over an upward/downward moving rotating disk

Gowda

Naveenkumar

Madhukesh

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part N:

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The flow-through various disk movement has wide range of applications in manufacturing processes like, computer storage equipment’s, rotating machines, electronic and various types of medical equipment’s. Inspired from these applications, here we scrutinised the consequences of homogeneous-heterogeneous reactions and uniform heat source/sink on the three-dimensional (3D) hybrid SWCNT-MWCNT’s flow on time dependent moving upward/downward rotating disk. The renowned innovation of this paper is the application of the hybrid nanofluid made up of SWCNT and MWCNT’s. Heat generation/absorption effect for the disk that does not move up or down creates a dual flow on the disk. Alternatively, the rotation and upright motion of the disk creates a 3D flow on the surface which has not been considered in the open literature. The modelled PDE’s are reduced in to ODE’s by opting suitable similarity variables and boundary constraints. Here, we used RKF-45 method to obtain the numerical approximations by adopting shooting technique. The analysis of rate of heat transfer is done through graphs. Further, change in velocity, thermal and concentration profiles for various non-dimensional parameters are deliberated briefly and illustrated with the help of suitable plots. The results reveal that, the, rise in values of homogeneous and heterogeneous reaction parameters improve the rate of reaction which results in reduction of the distribution rate and diminishes the concentration gradient. An increase in expansion/contraction parameter enhances the velocity and thermal gradients.

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“…Hayat et al 27 explored radiative flow between two rotating disks with viscous dissipation, Joule heating and irreversibility. Qayyum et al 28 considered entropy generation in MHD flow of Walter-B nanofluid. Here heat generation and dissipation effects are present.…”

Section: Introductionmentioning

confidence: 99%

Rotating flow of viscous nanomaterial with radiation and entropy generation

Hayat

Ahmad

Khan

et al. 2021

Advances in Mechanical Engineering

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This communication models the flow of viscous nanofluid between two heated parallel plates with radiation and uniform suction at one boundary. Two types of carbon nanotubes (CNTs) namely the single (SWCNT) and multiple (MWCNT) walls are accounted. Heat generation, radiation, and dissipation in heat expression are utilized. Entropy generation and Bejan number are examined. Formulation and analysis in rotating frame are considered. Convergent solutions for velocity and temperature are constructed and interpreted. Coefficient of skin-friction and Nusselt number are tabulated and analyzed for comparative study of SWCNT and MWCNT. Correlation for skin-friction and Nusselt number are also evaluated. An enhancement in velocity profile is seen through suction variable. A reduction occurs in axial velocity for higher Reynolds number. An opposite trend is hold for thermal field through Eckert and Prandtl numbers. An intensification in temperature is noted for radiation. An amplification in entropy rate is observed through Brinkman number. Higher Reynolds number corresponds to improve Bejan number. An improvement in radiation variable lead to rises heat transfer rate for both carbon nanotubes.

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Entropy generation in nanofluid flow of Walters‐B fluid with homogeneous‐heterogeneous reactions

Cited by 12 publications

References 34 publications

Buoyancy‐motivated dissipative free convection flow of Walters‐B fluid along a stretching sheet under the Soret effect and Lorentz force influence

Buoyancy‐motivated dissipative free convection flow of Walters‐B fluid along a stretching sheet under the Soret effect and Lorentz force influence

Theoretical analysis of SWCNT- MWCNT/H2O hybrid flow over an upward/downward moving rotating disk

Rotating flow of viscous nanomaterial with radiation and entropy generation

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