Novel Physical Insights into the Thermodynamic Irreversibilities Within Dissipative EMHD Fluid Flows Past over a Moving Horizontal Riga Plate in the Coexistence of Wall Suction and Joule Heating Effects: A Comprehensive Numerical Investigation

Wakif, Abderrahim; Chamkha, Ali J.; Animasaun, Isaac Lare; Zaydan, Mostafa; Waqas, Hassan; Sehaqui, Rachid

doi:10.1007/s13369-020-04757-3

Cited by 170 publications

(60 citation statements)

References 50 publications

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“…To claim the validity of the present findings, a qualitative comparison with published studies have been presented in Table 1. This study involves a new investigation on MHD fluid flow towards a radiating Riga plate with rotational impact while Bhatti et al [21] investigated the irrotational EMHD nanofluid flow by considering the thermal radiation impacts on a Riga plate; Abbas et al [19] reckoned the generation of entropy due to the nanofluidic flow through a Riga plate of horizontal orientation, and Wakif et al [42] examined EMHD flow that subjected to suction for permeable and moving Riga plate. To make this comparison section as brief as possible, the effect of the suction parameter (S) is analyzed only.…”

Section: Overall Qualitative Comparisonmentioning

confidence: 99%

“…The EMHD flow of conducting fluid for the permeable Riga surface is worthy of dealing with wall suction or injection, some investigations are [39][40][41][42]. Substantial studies on the magnetohydrodynamic flow of rotating fluid and/ or system rotation along with the preparation and applications of radiative heat flux have been executed by [43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

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EMHD radiating fluid flow along a vertical Riga plate with suction in a rotating system

et al. 2021

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This study is performed on the numerical investigation of electro-magnetohydrodynamic (EMHD) radiating fluid flow nature along an infinitely long vertical Riga plate with suction in a rotating system. The prevailing equations are generated from the Navier–Stokes’ and energy equations. A uniform suction velocity is introduced to control the flow. The prevailing boundary layer (BL) equations are the stuff to delineate the mechanical features of the flowing nature along with the electromagnetic device (Riga plate). Accordingly, the use of usual transformations on the equations transformed those into a coupled dimensionless system of non-linear partial differential equations (PDEs). After conversion, the elucidation of the set of equations is conducted numerically by an explicit finite difference method (FDM). The criteria for stable and converging solutions are constructed to find restrictions on various non-dimensional parameters. The retrieved restrictions are $$P_{r} \ge 0.19,\,$$ P r ≥ 0.19 , $$R_{d} \ge 0.1,\,\,$$ R d ≥ 0.1 , $$S \ge 1,$$ S ≥ 1 , $$E_{c} = 0.01\,\,$$ E c = 0.01 and $$0 < R \le 0.1$$ 0 < R ≤ 0.1 . Furthermore, sensitivity tests on mesh and time as well as comparison within the literature have been demonstrated in graphical and tabular form. Finally, the important findings of the non-dimensional parameters influences have been portrayed in graphical manner by using the MATLAB R2015a tool. A substantial uprise is noted for both the velocities (secondary and primary) under the rising actions of the modified Hartmann number, whereas the suction parameter suppresses both the velocities.

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Section: Overall Qualitative Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

EMHD radiating fluid flow along a vertical Riga plate with suction in a rotating system

et al. 2021

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“…They obtained two solutions and verified the real (first) solution using the stability analysis. Wakif et al 43 concluded that the suction effect through the permeable Riga plate could enhance the thermodynamic irreversibility and heat transfer rate of the electrically conducting viscous fluid. Mixed convective stagnation point flow toward a linear stretching Riga plate was investigated by Shah et al 44 with the inclusion of heat source/sink using Cattaneo‐Christov energy equation.…”

Section: Introductionmentioning

confidence: 99%

Effect of suction on the stagnation point flow of hybrid nanofluid toward a permeable and vertical Riga plate

et al. 2020

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The application of appropriate wall mass suction (transpiration) has been reported as the key factor to generate steady solutions in the opposing flow (shrinking or opposing buoyancy). This study features the impact of the suction and mixed convection parameters in the stagnation point flow toward a permeable Riga plate. Due to the capability of hybrid nanofluids in enhancing the heat transfer performance, the combination of copper (Cu) and alumina (Al2O3) nanoparticles are used, including water as the base fluid. It appears that the dual solutions are potential in this problem with the negligence of the suction parameter. However, this transpiration effect is efficient in delaying the separation process of the hybrid nanofluid flow and enhancing the heat transfer rate. The heat transfer rate augments with the addition of ϕ 2 and S. The increment of heat transfer rate is reported between 34% and 39% when 30% of the suction parameter ( S = 0.3 ) is applied. Besides, the addition of the mixed convection parameter from the opposing to assisting flow enlarges the velocity profile while reduces the temperature profile. The reduction of temperature distribution with an upsurge of suction, mixed convection, and EMHD parameters implies the operating heat transfer process.

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“…Wakif et al. 13 analyzed the irreversibilities associated with the Riga plate. The authors considered the flow of electro-magnetic viscous fluid and they demonstrated that the suction effect significantly intensifies the heat transfer rate.…”

Section: Introductionmentioning

confidence: 99%

Irreversibility analysis of nanofluid flow in a vertical microchannel with the influence of particle shape

Sindhu

Gireesha

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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Augmentation of thermal performance in heat transfer system has become research hotspot nowadays. Numerous techniques are carried out to pick up the effective heat transport mechanism for designing high efficient thermal frameworks which has extensive practical uses in industrial process. In the current study, mixture model has been implemented for better describing the characteristics of nanoparticles in a vertical microchannel. The nondimensional equations are computed by using Runge Kutta Fehlberg method. Effect of heat source, buoyancy force and convective boundary on the thermal system has been demonstrated. The role of spheroidal nanoparticles on thermal conductivity of the conventional fluid has been examined. The causes of irreversibilities in a microchannel due to nanoliquid flow has been reported in the current research work. It is obtained that Aluminum foam has higher thermal field compared to Al2 O3. Entropy generation is reduced by lowering Eckert number and Grashof number. It is explored that nanofluid containing oblate shaped nanoparticels has higher thermal conductivity ratio.

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Novel Physical Insights into the Thermodynamic Irreversibilities Within Dissipative EMHD Fluid Flows Past over a Moving Horizontal Riga Plate in the Coexistence of Wall Suction and Joule Heating Effects: A Comprehensive Numerical Investigation

Cited by 170 publications

References 50 publications

EMHD radiating fluid flow along a vertical Riga plate with suction in a rotating system

EMHD radiating fluid flow along a vertical Riga plate with suction in a rotating system

Effect of suction on the stagnation point flow of hybrid nanofluid toward a permeable and vertical Riga plate

Irreversibility analysis of nanofluid flow in a vertical microchannel with the influence of particle shape

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