MHD Double Diffusive Natural Convection Flow Over Exponentially Accelerated Inclined Plate

Seth, G. S.; Tripathi, Rajat; Sharma, Rohit; Chamkha, Ali J.

doi:10.1017/.2016.56

Cited by 14 publications

(3 citation statements)

References 43 publications

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“…Given that the presence of magnetic field is inevitable in most of the electronic devices and, as reported by lots of researchers [24][25][26][27], it has a negative effect on the heat transfer rate, many researchers decided to discover how to reduce its unfavorable effect on the heat transfer rate. Attaching fins to the walls [28][29][30], adding nanopowder to the fluid flow [10,31], changing the medium from clear to porous [32,33], tilting the cavity [34,35], separating the cavity by means of elastic membranes [36,37] are promising approaches to reduce the unfavorable effect of the magnetic field on the Nu number. Adding nanopowder to a base fluid may cause a change in its rheology from Newtonian to non-Newtonian.…”

Section: List Of Symbolsmentioning

confidence: 99%

Investigation of the entropy generation during natural convection of Newtonian and non-Newtonian fluids inside the L-shaped cavity subjected to magnetic field: application of lattice Boltzmann method

et al. 2020

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In the present paper, free heat convection and entropy generation of Newtonian and two types of non-Newtonian fluids, shear-thickening and shear-thinning, inside an Lshaped cavity subjected to a magnetic field have been investigated by the finite difference lattice Boltzmann method. The power-law model was used for modeling the rheology of the fluids. The bottom and left walls of the cavity have been kept at a uniform high temperature. Internal walls are also kept cold. The remaining walls have been insulated against heat and mass transfer. The Boussinesq approximation is used to take the temperature dependency of density into account. The distribution functions of energy and density are modeled through the use of the nine-velocity two-dimensional scheme. The effects of Hartmann number (Ha), aspect ratio, power-law index, and Rayleigh number (Ra), on the flow field, temperature distribution, and entropy distributions are studied. The results show that the magnetic field and the power-law index have an ever-decreasing effect on the heat transfer rate and the entropy generation, while the Ra number has an ever-increasing effect. The maximum heat transfer enhancement of 71% happens at the lowest and the highest values of power-law index and Ra number, respectively, for the case with no magnetic field. The maximum heat transfer deterioration of 77% happens at the highest and lowest values of power-law index and Ra number, respectively, in the presence of the highest magnetic field strength. It is interesting that the sensitivities of heat transfer rate and the entropy generation to the Ha number become significant for shear-thinning fluids. It is found that there is an everlasting interplay between conduction and convection contributions to the irreversibilities, so that, for the Newtonian and

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Section: List Of Symbolsmentioning

confidence: 99%

Investigation of the entropy generation during natural convection of Newtonian and non-Newtonian fluids inside the L-shaped cavity subjected to magnetic field: application of lattice Boltzmann method

et al. 2020

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“…This is important in chemical engineering, meteorology, electronics, metallurgy and meteorology 16 . Seth et al 17 examined the significance of chemical reactivity with a radiative heat source on magnetohydrodynamic flow over a sponge medium with time exponential acceleration. Rehman et al 18 explored the MHD micropolar liquid flowing over the curve surface.…”

Section: Introductionmentioning

confidence: 99%

MHD Free convection flows of Jeffrey fluid with Prabhakar-like fractional model subject to generalized thermal transport

Siddique,

Adrees,

Ahmad

et al. 2023

Sci Rep

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This article examines the effects of magnetohydrodynamics and heat absorption on an incompressible Jeffrey fluid’ time-dependent free convection flow over an infinite, vertically heated plate with homogeneous heat flux. The constitutive equation for heat flow utilizes the Prabhakar-like fractional derivative. The Laplace transform technique obtains the precise solution for the momentum and thermal profiles. The typical case and well-known outcomes from the literature are retrieved as restraining cases. The graphical analysis of the impact of the flow and fractionalized parameters on the thermal and momentum profiles is presented. Additionally, a comparison is made between the ordinary model and the Prabhakar-like fractional model, which shows that the latter better captures the retention of the physical features of the problem. It is concluded that the Prabhakar-like fractional model is better suited for describing the memory effect of the thermal and momentum fields.

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“…This influence many authors to perform model research on free convection with thermal radiation in several hydrodynamic and magnetohydrodynamic problems under various physical and geometrical conditions. Mbeldogu et al 22 , Makinde 23 , Samad and Rahman 24 , Orhan and Ahmet 25 , Prasad et al 26 , Ahmed and Dutta 27 , Takhar et al 28 , Seth et al 29 , Balla and Naikoti 30 , Siviah et al 31 are some worth mentioning researchers in this area.…”

Section: Introductionmentioning

confidence: 99%

Dufour effect on unsteady MHD flow past a vertical plate embedded in porous medium with ramped temperature

Sarma

Ahmed

2022

Sci Rep

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The present investigation aims to find an exact solution to the problem of a free convective, viscous, radiating, chemically reacting, optically thick, non-gray, and incompressible MHD flow past an exponentially accelerated semi-infinite vertical plate in presence of a transverse magnetic field. The medium of flow is porous. Arbitrary ramped temperature and diffusion thermo effects are also considered. Rosseland approximation method is used to describe the flux that appears in the energy equation. The effects of different parameters on flow and transport characteristics are discussed with the help of suitable graphs. It is noticed that velocity field and concentration field decreases but temperature field increases with an upsurge in Schmidt number. Also, Nusselt number and skin friction rise with increasing chemical reaction parameter but lowers with increasing radiation parameter. Faster consumption of chemical substances decelerates both concentration and velocity but accelerates temperature of the fluid. An interesting outcome outcome of our investigation is that both Dufour effect and arbitrary ramped temperature diminishes fluid velocity.

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MHD Double Diffusive Natural Convection Flow Over Exponentially Accelerated Inclined Plate

Cited by 14 publications

References 43 publications

Investigation of the entropy generation during natural convection of Newtonian and non-Newtonian fluids inside the L-shaped cavity subjected to magnetic field: application of lattice Boltzmann method

Investigation of the entropy generation during natural convection of Newtonian and non-Newtonian fluids inside the L-shaped cavity subjected to magnetic field: application of lattice Boltzmann method

MHD Free convection flows of Jeffrey fluid with Prabhakar-like fractional model subject to generalized thermal transport

Dufour effect on unsteady MHD flow past a vertical plate embedded in porous medium with ramped temperature

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