Heat and Mass Transfer on Free Convective Flow of Amicropolar Fluid Through a Porous Surface With Inclined Magnetic Field and Hall Effects

Krishna, M. Veera; Anand, Prateek; Chamkha, Ali J.

doi:10.1615/specialtopicsrevporousmedia.2018026943

Cited by 193 publications

(29 citation statements)

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“…Sheikholeslami and Bhatti [24] analyzed magnetic nanofluid transportation under the effect of a non-uniform magnetic field in a porous cavity. The effects of heat and mass transfer on free convective flow of micropolar fluid were studied over an infinite vertical porous plate in the presence of an inclined magnetic field with a constant suction velocity and taking Hall current into account have been discussed by Veera Krishna et al [25]. Veera Krishna and Chamkha [26] have discussed the systematic solution of time-dependent mean velocity on MHD peristaltic rotating flow of an electrically conducting couple stress fluid in a uniform elastic porous channel.…”

Section: Introductionmentioning

confidence: 99%

Hall and ion slip effects on Unsteady MHD Convective Rotating flow of Nanofluids—Application in Biomedical Engineering

2020

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There is an intense worldwide activity in the development of instrumentation for medical diagnosis and bioscreening based on biological labeling and detection of nanoparticles. Based on this profound observation, Hall and ion slip effects on magnetohydrodynamic (MHD) free convective rotating flow of nanofluids in a porous medium past a moving vertical semi-infinite flat plate are investigated. The equations for governing flow are solved analytically by perturbation approximation. The effects of various parameters on the flow are discussed through graphs and tables. The velocity increases with Hall and ion slip parameters. An increase in the convective parameter led to amplify the thermal boundary layer thickness, but when the heat generation parameter is taken into consideration, an opposite effect occurs. The skin friction coefficient increases with an increase in nanoparticle volume fraction and it reduces with increase in Hall and ion slip parameters. Outcomes disclose that the impact of thermal convection of nanoparticles has increased the temperature distribution, which helps in destroying the cancer cells during the drug delivery process.

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Section: Introductionmentioning

confidence: 99%

Hall and ion slip effects on Unsteady MHD Convective Rotating flow of Nanofluids—Application in Biomedical Engineering

2020

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“…Combining Eqs. (16) and (17) by using relation (21), we obtain transformed single partial differential equation:…”

Section: Concentration Equationmentioning

confidence: 99%

“…Kumar et al [20] presented the influence of Hall on steady fully developed MHD natural convection flow in a perpendicular microchannel. Veera Krishna et al [21] studied Hall current and micropolar fluid model on MHD free convective flow through a porous surface with inclined magnetic field. Influence of Hall and ion-slip current on the entropy generation of couple stress fluid by means of velocity slip was discussed by Opanuga et al [22].…”

Section: Introductionmentioning

confidence: 99%

Influence of Dufour and thermal radiation on unsteady MHD Walter’s liquid model-B flow past an impulsively started infinite vertical plate embedded in a porous medium with chemical reaction, Hall and ion slip current

Rajakumar¹,

Rao²,

Reddy³

et al. 2020

SN Appl. Sci.

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The current examination is concerned with the influence of Dufour and thermal radiation on unsteady MHD Walter's liquid model-B flow past an impulsively started infinite vertical plate embedded in a porous medium with chemical reaction, Hall and ion-slip current. Perturbation scheme was utilized for solving non-dimensional governing equations. Computations are performed graphically to analyze the behaviour of velocity, temperature and concentration along with Skin friction, Nusselt number and Sherwood number are presented in tabular form on the vertical plate with the difference of emerging physical parameters. Finally, it is concluded that primary and secondary velocities are steeply accelerated with the incremental values of Hall and ion-slip parameter, and the same effect occurred in the case of axial and transverse components of the shearing stress. Primary and secondary velocities are enhanced with the ascending values of Dufour number. But contrast repercussions were demonstrated in the case of temperature. However, primary and secondary velocities and concentration decline with the increasing values of chemical reaction parameter but the contradicted outcome is taken place in the case of temperature. Meanwhile, primary velocity, secondary velocity and temperature are fallen with the amplified values of radiation absorption, but the inverse effect occurs in the case of Nusselt number.

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“…In this direction, few other relevant studies are mentioned in refs. (Takhar et al , 2003; Seth and Ansari, 2010; Das et al , 2103; Ali et al , 2018; Krishna et al , 2018; Krishna et al , 2019; Arif et al , 2019; Kumar et al , 2019; Haq et al , 2020; Abbas et al , 2019; Hasnain et al , 2019a, b; Hasnain et al , 2020).…”

Section: Introductionmentioning

confidence: 99%

Delineating impacts of non-uniform wall temperature and concentration on time-dependent radiation-convection of Casson fluid under magnetic field and chemical reaction

Das

Banu

Jana

2021

WJE

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Purpose In various kinds of materials processes, heat and mass transfer control in nuclear phenomena, constructing buildings, turbines and electronic circuits, etc., there are numerous problems that cannot be enlightened by uniform wall temperature. To explore such physical phenomena researchers incorporate non-uniform or ramped temperature conditions at the boundary, the purpose of this paper is to achieve the closed-form solution of a time-dependent magnetohydrodynamic (MHD) boundary layer flow with heat and mass transfer of an electrically conducting non-Newtonian Casson fluid toward an infinite vertical plate subject to the ramped temperature and concentration (RTC). The consequences of chemical reaction in the mass equation and thermal radiation in the energy equation are encompassed in this analysis. The flow regime manifests with pertinent physical impacts of the magnetic field, thermal radiation, chemical reaction and heat generation/absorption. A first-order chemical reaction that is proportional to the concentration itself directly is assumed. The Rosseland approximation is adopted to describe the radiative heat flux in the energy equation. Design/methodology/approach The problem is formulated in terms of partial differential equations with the appropriate physical initial and boundary conditions. To make the governing equations dimensionless, some suitable non-dimensional variables are introduced. The resulting non-dimensional equations are solved analytically by applying the Laplace transform method. The mathematical expressions for skin friction, Nusselt number and Sherwood number are calculated and expressed in closed form. Impacts of various associated physical parameters on the pertinent flow quantities, namely, velocity, temperature and concentration profiles, skin friction, Nusselt number and Sherwood number, are demonstrated and analyzed via graphs and tables. Findings Graphical analysis reveals that the boundary layer flow and heat and mass transfer attributes are significantly varied for the embedded physical parameters in the case of constant temperature and concentration (CTC) as compared to RTC. It is worthy to note that the fluid velocity is high with CTC and lower for RTC. Also, the fluid velocity declines with the augmentation of the magnetic parameter. Moreover, growth in thermal radiation leads to a declination in the temperature profile. Practical implications The proposed model has relevance in numerous engineering and technical procedures including industries related to polymers, area of chemical productions, nuclear energy, electronics and aerodynamics. Encouraged by such applications, the present work is undertaken. Originality/value Literature review unveils that sundry studies have been carried out in the presence of uniform wall temperature. Few studies have been conducted by considering non-uniform or ramped wall temperature and concentration. The authors are focused on an analytical investigation of an unsteady MHD boundary layer flow with heat and mass transfer of non-Newtonian Casson fluid past a moving plate subject to the RTC at the plate. Based on the authors’ knowledge, the present study has, so far, not appeared in scientific communications. Obtained analytical solutions are verified by considering particular cases of the published works.

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Heat and Mass Transfer on Free Convective Flow of Amicropolar Fluid Through a Porous Surface With Inclined Magnetic Field and Hall Effects

Cited by 193 publications

References 0 publications

Hall and ion slip effects on Unsteady MHD Convective Rotating flow of Nanofluids—Application in Biomedical Engineering

Hall and ion slip effects on Unsteady MHD Convective Rotating flow of Nanofluids—Application in Biomedical Engineering

Influence of Dufour and thermal radiation on unsteady MHD Walter’s liquid model-B flow past an impulsively started infinite vertical plate embedded in a porous medium with chemical reaction, Hall and ion slip current

Delineating impacts of non-uniform wall temperature and concentration on time-dependent radiation-convection of Casson fluid under magnetic field and chemical reaction

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