Evaluation of Heat Irreversibility in a Thin Film Flow of Couple Stress Fluid on a Moving Belt

Adesanya, Samuel O.; Lebelo, Ramoshweu Solomon; Moloi, Kholeka Constance

doi:10.1155/2018/6237592

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…It has found applications in several areas like biomedical [34], synovial joints (shoulder, hip, knee and ankle) fluid [35], animal blood [36], slider bearing [37] and lubricants with tiny polymer additives [38]. Furthermore, several investigations have been conducted to attest to the significance of couple stress fluid [39][40][41][42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Unsteady Two Dimensional Mixed Convection MHD Couple Stress Fluid Flow through an Inclined Stretching Sheet with Chemical Reaction

Opanuga

Akinremi

Okagbue

et al. 2022

DDF

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In this work, the investigation has focused on the unsteady hydromagnetic mixed convection couple stress fluid through an inclined linearly stretching sheet. The model equations governing the flow are converted to ordinary differential equations employing appropriate similarity transformation variables. An efficient technique, Runge-Kutta 4th order (RK4) technique together with shooting method is deployed to tackle the dimensionless equations with relevant boundary conditions. The impacts of various parameters such as unsteadiness parameter , Hartman number , mixed convection parameter , concentration buoyancy parameter , angle of inclination , chemical reaction parameter and Schmidt number are analysed and discussed with plots. Fluid velocity decreases as the unsteadiness, Hartman number, Schmidt number, and chemical reaction parameters rise; while the angle of inclination, mixed convection, and concentration buoyancy parameters speed up the flow. Furthermore, the unsteadiness, angle of inclination and mixed convection parameters reduce fluid temperature, while all the parameters reduce flow concentration.

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Section: Introductionmentioning

confidence: 99%

Unsteady Two Dimensional Mixed Convection MHD Couple Stress Fluid Flow through an Inclined Stretching Sheet with Chemical Reaction

Opanuga

Akinremi

Okagbue

et al. 2022

DDF

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“…Some studies were also reported for the thin film flow with various aspects. [6][7][8][9] In the recent investigations of thin film flows, Dandapat et al 10 explored the double-layer thin film flow over a stretching sheet. The asymptotic method was employed to solve the similar differential equations.…”

Section: Introductionmentioning

confidence: 99%

Thermal energy transport in thin film flow of nanofluid over a decelerating rotating disk

Ahmad

Ahmed

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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The thin film flow in nanotechnology is one of the most modern progresses in the study of thin films. This includes coating with nanocomposite materials, thus providing the materials improved mechanical properties due to a so-called size effect. The ultimate functional properties that can be gained are of high adherence, wear resistance, thermal conductivity, oxidation resistance, higher toughness and hardness. This article studies the transient motion of nanofluid thin film over a disk rotating with angular velocity inversely proportional to the time. The importance of Lorentz force arises due to the axial projection of magnetic flux is studied on thin film flow and heat transfer. Two active mechanisms of nanoparticles, namely thermophoresis and Brownian diffusion, are discussed using Buongiorno model. By adopting a similarity method, the velocity distribution thermal and concentration fields above the rotating disk are simulated numerically and assessed graphically. Numerical illustrations for nanofluid film thickness, skin friction and heat and mass transfer rates are depicted against the impacts of several influential parameters. Results highlight that film thickness reduces with unsteadiness and rotation parameters. The results also spectacle that the involvement of a magnetic beam reduces the velocity of nanofluid film. Further, it is observed that thermophoresis and Brownian motion effects make a better influence in enhancing the heat transfer rate.

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Evaluation of Heat Irreversibility in a Thin Film Flow of Couple Stress Fluid on a Moving Belt

Cited by 2 publications

References 21 publications

Unsteady Two Dimensional Mixed Convection MHD Couple Stress Fluid Flow through an Inclined Stretching Sheet with Chemical Reaction

Unsteady Two Dimensional Mixed Convection MHD Couple Stress Fluid Flow through an Inclined Stretching Sheet with Chemical Reaction

Thermal energy transport in thin film flow of nanofluid over a decelerating rotating disk

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