Computation of Unsteady MHD Mixed Convective Heat and Mass Transfer in Dissipative Reactive Micropolar Flow Considering Sorte and Dufour Effects

Shamshuddin, Md.; Chamkha, Ali J.; Thumma, Thirupathi; Raju, M. C.

doi:10.5098/hmt.10.15

Cited by 8 publications

(6 citation statements)

References 28 publications

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“…Therefore, the mass transfer exerts interplay with the flow field and the distribution of species in material can control via the Schmidt number. The results are similar to the results obtained by Shamshuddin et al who have studied heat and mass transfer for micropolar fluid. However it is interesting to note that when the temperature at the cold wall exceeds the temperature at the hot wall, reversal effect is observed on the flow structure as seen in Figure D‐F.…”

Section: Resultssupporting

confidence: 91%

Soret effects on the mixed convection flow using Robin boundary conditions

Umavathi

Sheremet

Patil

2019

Heat Trans. Asian Res.

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An investigation has been undertaken as Soret andSchmidt outcomes on the mixed convection flow using Robin boundary conditions. The results use a vertical channel being kept at constant cold temperature and concentration at the left wall and hot temperature and concentration at the right wall. The exchange of heat is done by help of plates with a fluid. We consider the external fluid with equal and different temperatures.This physical problem is solved by using nondimensional parameters with the corresponding boundary conditions. To find analytical solution, the regular perturbation series method is used, and for finding the numerical solution, the well-known Runge-Kutta method with shooting technique is employed. Comparison of the current study is favorable with the previous published results. The obtained results depend on the governing parameters such as thermal Grashof number, solutal Grashof number, Biot numbers, symmetric and asymmetric wall temperatures, Schmidt number, Soret number, and Brinkman number. An influence of these parameters on the fields of velocity, temperature, and concentration is reported. Further, the numerical results for the Nusselt number, mean value of the velocity, dimensionless bulk temperature, skin friction, and molecular diffusion coefficient are tabulated for different parametric conditions and explained. For small value of Brinkman number, the obtained values agree with other published results for all considered cases. K E Y W O R D S mixed convection, Robin boundary conditions, Runge-Kutta method, Soret number | INTRODUCTIONThe induced buoyancy flows in ducts deserve wide attention in the engineering section owing to their usefulness in a huge number of thermally controlled devices such as the heat exchangers, electronics, solar collectors, and others. In the passive-or semipassive-controlled systems, purely free and mixed convection is done. Both the natural and forced convection heat transfer mechanisms take place in the heat transfer situations and that phenomenon is called mixed convection. The internal flow of fluid is either upward or downward in the vertical channels. The flow of mixed convection in vertically heated channels happens in various technical apparatus including internal cooling system by turbine rotor blade and cooling of the nuclear reactors and electronic components. Tao 1 worked on using the vertical channels flow of fully developed mixed convection at the wall temperature. Aung and Worku 2,3 studied the flow of fluid through the vertical channel by the theory of combined free and forced convention and they also assumed that temperature is asymmetric at the walls of the channel. Aung and Worku, 3 Barletta, 4 and Umavathi et al 5 worked on the mixed convection flow of fluid at symmetric wall conditions in vertical channels. Later, Prathap Kumar et al 6-9 studied mixed convection flows in a vertical channel filled with immiscible fluids.Recently, in the presence of chemical reaction, the coupled heat and mass transfer has many processes. Distribution of te...

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Section: Resultssupporting

confidence: 91%

Soret effects on the mixed convection flow using Robin boundary conditions

Umavathi

Sheremet

Patil

2019

Heat Trans. Asian Res.

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“…Subsequently, Veera Krishna and Reddy [20] presented chemical reactions and heat source effects on MHD-free convective boundary layers flowing in a porous backdrop past a moving vertical plate. Shamshuddin et al [21] looked into the chemical reaction impact on MHD dissipative micro-polar flow regarding Soret's and Dufour's impacts. Recently, Kataria and Patel [22] employed analytical and numerical simulations to assess the leverage of chemical reaction change on the hydro-magnetic motion of fluids under various conditions.…”

Section: Introductionmentioning

confidence: 99%

Hall and viscous dissipation effects on mixed convective MHD heat absorbing flow due to an impulsively moving vertical porous plate with ramped surface temperature and concentration

Matao,

Reddy,

Sunzu

2024

Z Angew Math Mech

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The current investigation is purported on viscous heating dissipation and Hall consequences on mixed convection magneto‐hydrodynamic heat captivating fluid transmitting from an impulsively starting vertical porous plate with ramp surface temperature and concentration in the existence of chemical reaction and radiation. The dimensional flow dominating partial differential equations is translated into a non‐dimensional partial differential form by adopting appropriate variables and parameters. A finite element approach is driven to simplify the resulting dimensionless nonlinear linked partial differential equations with initial and boundary stipulates. The after‐effects of flow commanding parameters on the velocity components, temperature and concentration are broadly analysed graphically, whereas both primary and secondary shear stresses, heat and mass transferral rates close to the surface area of the plate are discussed in tables. The ultimate results of this research revealed that viscous heating dissipation, Hall current, and thermal and mass buoyancy responses intensify both velocity components, whereas the efficacy of magnetic fields and radiation degrade both velocity components. The temperature distribution devalues with increasing heat absorption and Prandtl number, but a contrary impulse was noted with viscous heating dissipation. Likewise, concentration distribution expands with time progress but decays with chemical reaction parameters. A comparative analysis among the current results and certain research studies in the literature manifests the results’ precision and correctness.

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“…The diffusion-thermo (Dufour) effect was found to be of a considerable magnitude such that it cannot be ignored, described by Eckert and Drake [33] in their book. Recently plenty of investigators used Soret and Dufour effects are Hayat et al, [34] (for axi-symmetrical viscous flow), Makinde and Olanrewaju [35] and Shateyi et al, [36] (for mixed convection viscous flow), Srinivasacharya and Kaladhar [37] (for couple stress fluid), Shamshuddin and Siva Reddy [38] (for free convection rotating micropolar fluid flow) and Shamshuddin et al, [39] (for mixed convection rotating micropolar fluid flow).…”

Section: Introductionmentioning

confidence: 99%

Dissipative-Radiative Micropolar Fluid Transport in a Non-Darcy Porous Medium with Cross-Diffusion Effects

Ferdows¹,

Shamshuddin²,

Zaimi³

2020

CFDL

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In this work, the micropolar fluid flow and heat and mass transfer past a horizontal stretching sheet through a porous medium are studied including the Soret-Dufour effect in the presence of viscous dissipation. A uniform magnetic field is applied transversely to the direction of the flow. The governing differential equations of the problem are transformed into a system of non-dimensional differential equations which are solved numerically by Nachtsheim-Swigert iteration technique along with the sixth order Runge-Kutta integration scheme. The velocity, microrotation, temperature and concentration profiles are presented for different parameters and interpreted at length. Results show that with an increase in vortex viscosity ratio parameter, suction parameter and radiation parameter, velocity is decreased whereas it increases with the increase of magnetic parameter, Darcy number and Eckert number. Angular velocity significantly elevated by increasing the suction parameter, surface nonlinearity parameter and magnetic parameter. Temperature gradient escalate with the increase of magnetic parameter and Dufour number, while a reverse trend is observed in case of increase of Darcy number, Eckert number and Soret number. Concentration gradient putrefies with Schmidt number and Dufour number. However, concentration grows with Soret number. The present problem finds significant applications in hydromagnetic control of conducting polymeric sheets and magnetic materials processing.

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Computation of Unsteady MHD Mixed Convective Heat and Mass Transfer in Dissipative Reactive Micropolar Flow Considering Sorte and Dufour Effects

Cited by 8 publications

References 28 publications

Soret effects on the mixed convection flow using Robin boundary conditions

Soret effects on the mixed convection flow using Robin boundary conditions

Hall and viscous dissipation effects on mixed convective MHD heat absorbing flow due to an impulsively moving vertical porous plate with ramped surface temperature and concentration

Dissipative-Radiative Micropolar Fluid Transport in a Non-Darcy Porous Medium with Cross-Diffusion Effects

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