Effects of rotation on Jeffrey nanofluid flow saturated by a porous medium

Rana, G. C.

doi:10.17512/jamcm.2021.3.02

Cited by 14 publications

(4 citation statements)

References 26 publications

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“…Numerous recent studies have focused on the stability of convection in such settings, for instance, Refs. [38][39][40][41][42][43][44][45][46][47][48][49][50][51]. Subsequently, we detail the partial differential equations governing fluid movement within a porous medium.…”

Section: Introductionmentioning

confidence: 99%

Soret effect on stability of Darcy problem in a bidispersive porous medium with an exothermic chemical surface reaction

Afluk,

Harfash

2024

Z Angew Math Mech

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We examine a saturated bidispersive porous medium undergoing an exothermic chemical reaction at its lower boundary. The fluid flow within this medium is modelled using the Darcy approach. While the Dufour effect is disregarded, the influence of the Soret effect is thoroughly explored. This problem represents a complex multiphysical phenomenon that integrates fluid dynamics, heat and mass transfer, chemical kinetics and thermoelectric effects. This problem finds relevance in various scientific and engineering applications, including enhanced oil recovery, chemical engineering, environmental engineering and energy systems. We introduce a complementary energy theory alongside a linear theoretical framework for the model. The Chebyshev collocation method is employed to derive both linear and nonlinear results. Our findings reveal that the effect of enhancing the Soret coefficient on the system's stability is contingent upon the boundary conditions and the Lewis number. Specifically, an increase in the Soret coefficient generally stabilises the system during stationary convection. Conversely, in scenarios where oscillatory convection prevails, a higher Soret coefficient tends to destabilise the system.

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Section: Introductionmentioning

confidence: 99%

Soret effect on stability of Darcy problem in a bidispersive porous medium with an exothermic chemical surface reaction

Afluk,

Harfash

2024

Z Angew Math Mech

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“…The study of non-Newtonian nanofluids in porous media has not received much attention, different types of non-Newtonian nanofluids exist. The Jeffrey fluid model, recognized as the most valuable among these models, has garnered significant interest from various researchers, including Gautam et al [13], Sharma et al [14][15][16], Rana [17], Khan et al [18], Pati et al [19], Pati et al [20], Ashraf et al [21], Sharma et al [22], Bains et al [23] and Garg et al [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Effect of magnetic field on the onset of thermal convection in a Jeffery nanofluid layer saturated by a porous medium: free-free, rigid-rigid and rigid-free boundary conditions

Ajit Kumar,

Pushap Lata,

Praveen Lata

et al. 2024

J. Nig. Soc. Phys. Sci.

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The effect of the magnetic field on the onset of thermal convection in a porous layer saturated by Jeffrey nanofluid is studied. Three distinct boundary conditions are considered to be free-free, rigid-rigid and rigid-free boundaries. The model used for Jeffrey nanofluid includes the effect of Brownian motion and thermophoresis. The normal mode analysis as well as the Galerkin first approximation technique is used. The effects of the Rayleigh number of nanoparticles, Lewis number, modified diffusivity ratio, Jeffery parameter, porosity and Chandrasekhar number are investigated analytically and graphically. It is discovered that the Chandrasekhar number, Lewis number and modified diffusivity ratio have a stabilizing effect while the Jeffery parameter, nanoparticles Rayleigh number and porosity have a destabilizing effect. This study induces the effect of Chandrasekhar number and Jeffrey nanofluid. We have analyzed that Chandrasekhar number produces a stabilizing effect on the onset of convection i.e. it delays the onset of convection whereas the Jeffrey parameter which comes from Jeffrey nanofluid shows the destabilizing effect on the onset of convection i.e. it accelerates the onset of convection. The influence of a magnetic field on the commencement of nanofluid convection is significant in magnetohydrodynamic power generators, electrical equipment, petroleum reservoirs, nuclear reactors, biochemical engineering, chemical engineering and geophysics.

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“…of a Jeffrey nanofluid layer saturating a porous medium and concluded that the rotation parameter stabilises the system for bottom and top-heavy layouts. A porous-medium-saturated Jeffrey nanofluid flow was studied by Rana [38] for the effects of rotation. For both bottom and top-heavy arrangements and provided evidence that the rotation parameter stabilises the system.…”

Section: Introductionmentioning

confidence: 99%

Thermal instability of rotating Jeffrey nanofluids in porous media with variable gravity

Sharma¹,

Bains²,

Thakur³

2023

J. Nig. Soc. Phys. Sci.

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It is investigated how changes in gravity affect the thermal instability rotating Jeffrey nanofluids in porous media. Along with the Galerkin method and normal mode approach, the Darcy model is used. The distinct variable gravity parameters taken in this paper are: h(z)=z2-2z, h(z)=-z2, h(z)=-z and h(z)=z and their effects on the Jeffrey parameter, Taylor number, moderated diffusivity ratio, porosity of porous media, Lewis number and nanoparticle Rayleigh number on stationary convection have been scrutinized and graphically shown. Our finding demonstrates that varying gravity parameter h(z)=z2-2z has more stabilising impact on stationary convection. We have also discovered the necessary condition for overstability in the instance of oscillatory convection for this problem.

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Effects of rotation on Jeffrey nanofluid flow saturated by a porous medium

Cited by 14 publications

References 26 publications

Soret effect on stability of Darcy problem in a bidispersive porous medium with an exothermic chemical surface reaction

Soret effect on stability of Darcy problem in a bidispersive porous medium with an exothermic chemical surface reaction

Effect of magnetic field on the onset of thermal convection in a Jeffery nanofluid layer saturated by a porous medium: free-free, rigid-rigid and rigid-free boundary conditions

Thermal instability of rotating Jeffrey nanofluids in porous media with variable gravity

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