Numerical passive control of alumina nanoparticles in purely aquatic medium featuring EMHD driven non-Darcian nanofluid flow over convective Riga surface

Alexandria Engineering Journal, Год журнала: 2022, Номер 68, С. 747 - 762

Опубликована: Дек. 22, 2022

Motivated by the thermal importance of feeble electrically conducting nanofluids and their flow controls in many industrial engineering applications, present scrutinization intended to evidence comprehensively main electro-magneto-hydrothermal mass aspects convective non-homogeneous flows alumina-based pure water Al2O3-H2O over a horizontal flat surface an electromagnetic actuator (i.e., Riga pattern, which is embedded geometrically Darcy-Forchheimer porous medium. Further, nanofluid model formulated realistically under umbrella renovated two-phase Buongiorno's approach with inclusion Brownian motion thermophoresis diffusive phenomena, vertical component nanoparticles' flux tend vanish at limiting contact due its impermeability trend. For streamlining technical handling problem, governing partial differential equations (PDEs) are simplified mathematically adopting physical approximations boundary layer theory then transformed into structure ordinary (ODEs) based on several similarity changes. Methodologically, resulting nonlinear coupled ODEs solved numerically via validated quadrature procedure. Besides, generated graphical demonstrations show that temperature enhanced significantly porosity factors, loading, heating strength, process. However, factors loading exhibit slowing-down impact motion. Usefully, it revealed from obtained GDQM - NRT datasets express important improvement strength viscous drag forces, whereas induced field shows reverse frictional impact.

Язык: Английский

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Unsteady mixed convective radiative nanofluid flow in the stagnation point region of a revolving sphere considering the influence of nanoparticles diameter and nanolayer

Journal of the Indian Chemical Society, Год журнала: 2022, Номер 99(10), С. 100716 - 100716

Опубликована: Сен. 8, 2022

Язык: Английский

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Characterization of fluid flow and heat transfer of a periodic magnetohydrodynamics nano non‐Newtonian liquid with Arrhenius activation energy and nonlinear radiation

Heat Transfer, Год журнала: 2022, Номер 51(7), С. 6578 - 6615

Опубликована: Июнь 6, 2022

Abstract The focus of this study is to better understand the boundary layer phenomena nonlinear radiative nano non‐Newtonian (Casson) fluid flow caused by a stretched periphery with periodic magnetic field and Arrhenius activation energy. time‐based controlling equations are translated into suitable dimensionless form using explicit finite difference (EFD) approach. However, make solution convergent, detailed stability convergence criteria have been devised. In addition, oscillatory velocity, isothermal, streamline profiles, as well conventional shape other fields displayed. Using tabular analysis, correlation between Newtonian fluids has even demonstrated. When heat flux evaluated in linear pattern rather than one, Lorentz force demonstrated diminish profiles convincingly. Also, another finding that when factor considered sinusoidal it transfer factors nanofluid substantially. As chemical reaction requires high‐temperature mechanism proceed, scientific principles energy inclusion thermal radiation patterns, mass transmission severely influenced. presence radiation, Brownian motion Casson particles, thermophoresis effectively elevated temperature one. current implications for prostate cancer treatment. Nanoparticles used treat cancer, regulate drug emission particles.

Язык: Английский

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Thermally Dissipative Flow and Entropy Analysis for Electromagnetic Trihybrid Nanofluid Flow Past a Stretching Surface

ACS Omega, Год журнала: 2022, Номер 7(37), С. 33432 - 33442

Опубликована: Сен. 2, 2022

The growth of hybrid nanofluids can be connected to their enhanced thermal performance as pertains the dynamics automobile coolant among others. In addition that, characteristics water-based carrying three different types nanoparticles are incredible. Keeping in view this new idea, current investigation explores ternary nanofluid flow over a stretching sheet. Joule heating and viscous dissipation addressed heat equation. Three distinct kinds nanoparticles, namely, magnesium oxide, copper, MWCNTs, suspended water form with combination MgO-Cu-MWCNTs-H2O. To stabilize nanofluid, transverse magnetic electric fields have been considered fluid model. production entropy has analyzed for modeled problem. A comparative study ternary, hybrid, traditional also carried out by sketching statistical charts. equations that govern problem shifted dimension-free format employing transformable variables, then they solved homotopy analysis method (HAM). It revealed work opposes parameter supports field volumetric fraction while profiles gained growing values these parameters. Boosting field, parameters, Eckert number support Bejan oppose entropy. Statistically, it established higher conductivity than or nanofluids.

Язык: Английский

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Numerical inspection of two-dimensional MHD mixed bioconvective flows of radiating Maxwell nanofluids nearby a convectively heated vertical surface

Waves in Random and Complex Media, Год журнала: 2023, Номер unknown, С. 1 - 22

Опубликована: Фев. 16, 2023

The non-homogeneous aspect and dynamical feature of a radiating mixture an upper-convected Maxwell nanofluid gyrotactic motile microorganisms are revealed numerically in this investigation during its two-dimensional mixed convective motion nearby convectively heated vertical surface uniform magnetic field source. Based on relevant physical mathematical backgrounds, the conservation laws (i.e. equations continuity, momentum, heat balance, solid nanoparticles’ concentration, microorganisms’ concentration) monitoring present flow problem derived appropriately form partial differential equations. By making use specific transformations rearrangements, these converted thereafter into gigantic structure first-order ordinary executing computationally appropriate bvp4c subroutine, resulting boundary layer handled accordingly for well-defined constraints. Afterward, computing unitless characteristics velocity, temperature, skin friction coefficient, Nusselt's number, Sherwood's transfer rate) discussed exhaustively via graphical tabular illustrations. As prominent outcomes, it is demonstrated that Joule's heating effect Lorentz's forces exhibit enhancing influence mass transport phenomena within nanofluidic medium with dissimilar impact.

Язык: Английский

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Towards a novel EMHD dissipative stagnation point flow model for radiating copper-based ethylene glycol nanofluids: An unsteady two-dimensional homogeneous second-grade flow case study

Case Studies in Thermal Engineering, Год журнала: 2023, Номер 45, С. 102914 - 102914

Опубликована: Март 23, 2023

A novel EMHD dissipative second-grade nanofluid flow model is proposed exclusively in this numerical inspection for radiating copper-based ethylene glycol nanofluids to reveal the dynamical and thermal aspects of studied homogeneous mixture during its unsteady two-dimensional stagnation point towards a horizontal electromagnetic actuator. Based on admissible physical assumptions authenticated experimental correlations, governing PDEs BCs are derived appropriately problem under consideration. After numerous rearrangements non-dimensionalization treatments, resulting ODEs handled computationally with help robust GDQ algorithm parametric control several influencing factors, whose strengthening magnitudes affect probably process heat transport mechanism. In context, it proved graphically that nanoparticles' loading exhibits dissimilar impacts as compared influences diameter size. Besides, resistive effect utilized actuator reinforces thermally enhancing role radiative flux Joule's heating within nanofluidic medium.

Язык: Английский

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Solutal effects on thermal sensitivity of casson nanofluids with comparative investigations on Newtonian (water) and non-Newtonian (blood) base liquids

Alexandria Engineering Journal, Год журнала: 2023, Номер 71, С. 387 - 400

Опубликована: Март 28, 2023

In recent years nanoparticles have been widely used in medicines and pharmaceuticals because of their special mechanical, optical, electrical behaviors, which affect significantly the convective nature blood liquid. The present work studies impact on thermosolutal sensitivity non-Newtonian fluid flow numerical computations are made using as a base Binary features included formulation problem through solutal variables Casson model, respectively. An efficient simple methodology is applied to set equations an initial state solution obtained further perturbed slightly leading realistic expression Rayleigh number function thermophysical characteristics system. To capture complete essence problem, comparative study also performed by taking (non-Newtonian)/water (Newtonian) liquids for thermal/thermosolutal cases metallic/non-metallic results some key observations not yet established literature. Thermosolutal instability dominated effects makes system highly sensitive, while parameter stabilizes liquid its higher value, layer increases.

Язык: Английский

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A passive control approach for simulating thermally enhanced Jeffery nanofluid flows nearby a sucked impermeable surface subjected to buoyancy and Lorentz forces

Case Studies in Thermal Engineering, Год журнала: 2023, Номер 47, С. 103106 - 103106

Опубликована: Май 29, 2023

Owing to the latest progression in rheology of non-homogeneous composite media, viscoelastic materials have nowadays gained outstanding interest from experimenters because their practical uses different scientific areas (e.g., lubrication processing, blood vascular systems, polymer treatment, and petrochemical industry). Keeping mind these vital applications, a realistic passive control approach has been applied this numerical scrutinization explore aspects radiating nanofluids during MHD mixed convective flows nearby sucked impermeable surface existence an exponentially lessening heat generation. By invoking constitutive rheological equations Jeffery's model including mass transport contribution along with thermophoresis Brownian diffusive mechanisms, mathematical formulation flow derived properly under boundary layer assumptions. After specific treatment resulting equations, several tabular graphical demonstrations drawn accordingly. In respect, it is demonstrated that Deborah's numbers exhibit dissimilar behaviors toward nanofluid motion phenomena. As important findings, noticed heating radiative transfer mechanisms enhance considerably exchange rate slight weakening drag forces at vertical surface. Whilst, suction process shows advantageous impact on quantities feeble perturbation temperature nanoparticles concentration.

Язык: Английский

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Parametric simulation of stagnation point flow of motile microorganism hybrid nanofluid across a circular cylinder with sinusoidal radius

Open Physics, Год журнала: 2023, Номер 21(1)

Опубликована: Янв. 1, 2023

Abstract The article explores the three-dimensional stream of silver (Ag), magnesium oxide (MgO), and motile microorganism water-based hybrid nanofluids as independent time through a circular cylinder with sinusoidal radius. goal this research is to optimize rate energy mass transfer having periodic phenomena are simulated system partial differential equations containing momentum, temperature, concentration, profile microbes, which were then simplified dimensionless ordinal using similarity technique. problem solved by parametric continuation method, numerical methodology. From analysis, it has been perceived that both velocity fields significantly enhance rising effect nanoparticles (Ag–MgO). chemical reaction enhances transition because parameter influence exercises molecules inside fluid. outline elevated increment Lewis Peclet number.

Язык: Английский

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EMHD stagnation point flow of dusty hybrid nanofluid over a permeable stretching sheet: Radiative solar applications

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 54, С. 104044 - 104044

Опубликована: Янв. 24, 2024

The primary objective of this paper is to investigate the impact dusty hybrid nanofluid electromagnetohydrodynamics (EMHD) on stagnation point flow in presence solar radiation. Base fluids contain ethylene glycol, water, silver, titanium alloy, and suspended dust particles. Nonlinear differential equations with two or more independent variables define fluid phenomena. governing can be solved by MATLAB solver employing a suitable numerical method, like R–K fourth order via shooting method. isothermals for various parametric values have been explained. Because it has potential greatly advance disciplines industrial thermal engineering, proposed model useful. When compared using single base fluid, combination additional qualities provides noteworthy results. we were able acquire lower freezing than water better heat conductivity pure glycol when employed fluids. Glycol used car coolant heating systems variety purposes. Impact embedded physical quantities electric field parameter, ratio specific heat, porosity radiation source particle interaction parameter both velocity temperature are illustrated graphically. Dust particles notable sectors, including food pharmaceutical industries. Specifically, they special importance applications such as wastewater treatment, solids drying, plastic-coated metal items. In present work, observe that enhances momentum boundary layer (MBL) thickness because dominates while incorporating Ag + Ti alloy/EG Water. becomes efficient at evenly spreading potentially resulting uniform distribution. Silver alloy may affect fluid. penetration porous medium, which lowers friction between skin surface reduces resistance.

Язык: Английский

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