Steady Magnetohydrodynamic Micropolar Fluid Flow and Heat and Mass Transfer in Permeable Channel with Thermal Radiation

Agarwal, Vandana; Singh, Bhupander; Kumari, Amrita; Jamshed, Wasim; Nisar, Kottakkaran Sooppy; Almaliki, Abdulrazak H.; Zahran, H.Y.

doi:10.3390/coatings12010011

Cited by 10 publications

(3 citation statements)

References 32 publications

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“…(11) The stream function, is defined as (12) As a result, from the transformation, these equations obtained are as Eq. ( 13) -( 14) (13) (14) The boundary conditions ( 9) can be written as (15) The value of is taking that indicates weak concentration in microelements where rotation is plausible and anti-symmetric part of the stress tensor is vanishing [43]. At the lower stagnation point of the cylinder , the obtained ( 13) to ( 15) were reduced to a set of ordinary differential equation given by…”

Section: Mathematical Formulationmentioning

confidence: 99%

Flow Analysis on Boundary Layer of Porous Horizontal Circular Cylinder Filled by Viscoelastic-Micropolar Fluid

Kasim

Aziz²,

Ariffin³

et al. 2022

CFDL

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This study emphasis on the analysis of boundary layer flow of viscoelastic fluid with microrotation moving over a porous horizontal circular cylinder. The model of the problem is based on Navier Stokes equations which involved continuity, momentum and micro inertia equations. The mentioned equations are first undergo Boussinesq and boundary layer approximation before transforming to non-dimensional form which in partial differential equations system. Since the boundary layer equations of viscoelastic fluid are an order higher than Newtonian (viscous) fluid, the adherence boundary conditions are insufficient to govern the solutions entirely. Hence, the augmentation of an extra boundary conditions is necessary to perform the computation. The computation is done by adopting the established procedures called Keller box method. The results are computed for velocity and microrotation distribution as well as skin friction coefficient. It is worth to mentioned at the special case, the present model can be deduced to the established model where the porosity, microinertia and magnetic term excluded. The output computed will be served as a reference to study the complex fluid especially when the fluid exhibit both viscous and elastic characteristics with microrotation effect.

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Section: Mathematical Formulationmentioning

confidence: 99%

Flow Analysis on Boundary Layer of Porous Horizontal Circular Cylinder Filled by Viscoelastic-Micropolar Fluid

Kasim

Aziz²,

Ariffin³

et al. 2022

CFDL

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“…The value 12 n  is chosen for this problem where it indicates weak concentration in microelements and rotation is plausible, while the anti-symmetric part of the stress tensor is vanishing [21]. At the lower stagnation point of the cylinder, the constitutive equations of the viscoelastic micropolar flow are reduced to a set of differential equation given by…”

Section: ( ) ( ) Xf X Y N Xg X Ymentioning

confidence: 99%

Flow of Viscoelastic Fluid with Microrotation at a Boundary Layer Flow of a Horizontal Circular Cylinder

Aziz

Kasim

Salleh

et al. 2022

CFDL

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In this study, the dynamics of the non-Newtonian viscoelastic fluid with microrotation at a boundary layer of a horizontal circular cylinder is investigated. For this case, Lorentz force is induced by external magnetic field positioned at right angle of the fluid flow, hence the magnetohydrodynamic effect is embedded in the momentum equation of the proposed model in addition to other governing parameters. The constitutive equations are converted to dimensionless form along with the associated boundary conditions before the resulting partial differential equations are solved using finite difference technique in Fortran programming. Results are validated before the velocity and microrotation profiles are examined and the effects of material, viscoelastic and magnetohydrodynamic parameter on the flow is discussed.

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“…Agarwal et.al. (24) studied the magnetohydrodynamic micropolar fluid flow in a permeable channel with thermal radiation. Ullah et.al.…”

Section: Introductionmentioning

confidence: 99%

Magnetohydrodynamic Micropolar Fluid Squeeze Film Lubrication between Stepped Porous Parallel Plates

Naduvinamani¹,

Angadi²

2022

IJST

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Objectives:The primary goal of this paper is to study the influence of MHD and micropolar fluid on the squeeze film lubrication between stepped porous parallel plates. Method: The non-Newtonian micropolar fluid MHD Reynolds type equation is derived by considering the flow of micropolar fluid in the porous matrix as described by Darcy's law, as well as microstructure additives and magnetic effects associated with the magnetization of the fluid. The numerical solutions are presented graphically for the MHD squeeze film characteristics for various values of coupling number parameter, characteristic material length, and magnetic Hartmann number. Findings: According to the results, the micropolar fluid and the magnetic effects significantly influence the squeeze film characteristics. Comparing the MHD micropolar fluid impact on the squeeze film lubrication with the corresponding Newtonian and non-magnetic cases, we observe that there is a significant increase in the approaching time and the load-carrying capability. The increase in the step height decreases the squeezing film time. Novelty: The original research was conducted on the magneto-hydrodynamic micropolar fluid squeeze film lubrication between stepped porous parallel plates which has not been studied so far. The effect of applied magnetic field is to enhance the load carrying capacity and delayed time of approach which are the most desirable characteristics for improving the bearing performance.

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Steady Magnetohydrodynamic Micropolar Fluid Flow and Heat and Mass Transfer in Permeable Channel with Thermal Radiation

Cited by 10 publications

References 32 publications

Flow Analysis on Boundary Layer of Porous Horizontal Circular Cylinder Filled by Viscoelastic-Micropolar Fluid

Flow Analysis on Boundary Layer of Porous Horizontal Circular Cylinder Filled by Viscoelastic-Micropolar Fluid

Flow of Viscoelastic Fluid with Microrotation at a Boundary Layer Flow of a Horizontal Circular Cylinder

Magnetohydrodynamic Micropolar Fluid Squeeze Film Lubrication between Stepped Porous Parallel Plates

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