Water thermal enhancement in a porous medium via a suspension of hybrid nanoparticles: MHD mixed convective Falkner's-Skan flow case study

Case Studies in Thermal Engineering, Journal Year: 2023, Volume and Issue: 47, P. 103062 - 103062

Published: May 11, 2023

Keeping in mind the whispered applications of Falkner's-Skan Flows, present hydrothermal scrutinization intended to explore two-dimensional flow pattern and thermal characteristics featuring steady mixed convective motion a radiating homogeneous hybrid nanofluidic mixture (Ag+TiO2)−H2O (i.e., aquatic containing spherical silver titanium dioxide nanoparticles) over non-movable wedge surface. By combining Darcy's-Brinkman single-phase models, conservation equations are stated properly case where impacts specific variable heat magnetic sources taken into account effectively problem. After many simplifications rearrangements, derived boundary layer handled numerically with help robust iterative GDQM-NRT algorithm, whose accurate results presented graphically tabularly. As main findings, it is evidenced that buoyancy forces, as well Lorentz's Darcy's act assisting factors, which exert cooling impact throughout due imposed axial pressure gradient. Energetically, demonstrated nanoparticles play noteworthy role enhancement transfer rate at surface strengthening resulting viscous drag forces.

Language: Английский

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Chemically reactive MHD convective flow and heat transfer performance of ternary hybrid nanofluid past a curved stretching sheet

Journal of Molecular Liquids, Journal Year: 2023, Volume and Issue: 390, P. 123179 - 123179

Published: Sept. 27, 2023

Language: Английский

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Impact of solid–liquid interfacial layer in the nanofluid flow between stretching stationary disk and a rotating cone

Tribology International, Journal Year: 2023, Volume and Issue: 192, P. 109187 - 109187

Published: Dec. 12, 2023

Language: Английский

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Further insights into steady three-dimensional MHD Sakiadis flows of radiating-reacting viscoelastic nanofluids via Wakif’s-Buongiorno and Maxwell’s models

Journal of Umm Al-Qura University for Applied Sciences, Journal Year: 2024, Volume and Issue: unknown

Published: April 9, 2024

Abstract Keeping in mind the stress relaxation tendency of many viscoelastic multi-phase flows (e.g., polymer solution and transport phenomena red cell suspensions within blood media), present research investigation intends principally to develop a realistic model for revealing properly aspects reacting-radiating Maxwell nanofluids during their laminar boundary layer steady regime over horizontal impermeable surface under transversal magnetic influence. For this purpose, principal leading differential formulation is derived theoretically by linking Wakif’s-Buongiorno approach with Maxwell’s model. By invoking fundamentally general assumptions passive control strategy nanoparticles, governing PDEs’ simplified accordingly then stated case convective heating condition at bi-stretching surface. executing feasible non-dimensionalization technique, monitoring ODEs’ system achieved successfully, whose solutions are presented precisely different illustrative scenarios using Richardson’s extrapolation method. After carrying out successfully several validating tests, it demonstrated that weakly feature has generally slight delaying effect on nanofluid motion. This dynamical weakening can be reinforced more generation thermal energy intensifying external field source. Additionally, these physical factors show an influence drag forces. However, dropping impression seen local heat transfer contact Contrary broadening impact radiative as well thermophoresis mechanisms mass regions, witnessed first-order chemical reaction mechanism Brownian’s motion exhibit shrinking region.

Language: Английский

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Thermally radiative bioconvective nanofluid flow on a wavy cylinder with buongiorno model: A sensitivity analysis using response surface methodology

Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 55, P. 104178 - 104178

Published: Feb. 27, 2024

The significant impact of nanotechnology has turned the ordinary into excellent in ever-changing environment science and technology. Recent times have seen a dramatic transformation as advances technology continue to push us domain nanoscale innovation. Fluid flow over range geometries is involved physical processes heat mass transfer subject constraints. These phase change systems are also converted latest by improving thermal conductivity fluids through mixing nanoparticles base fluid. This approach makes things finer quicker from perspective efficiency structure. It many applications various domains especially nano-medicines, chemotherapy, microprocessors, refrigeration, biotechnology. In this work, nanofluid wavy cylinder considered existence radiation, activation energy, motile microorganisms. model computationally solved developing system PDE's (partial differential equations) then transformed ODE's (ordinary smooth implementation similarity variables. resultant numerically treated bvp4c built package MATLAB get required results. results discussed graphically visualized analysis section. For validation results, statistical implemented on acquired shows fitted model, contour plots, surface residual streamlines parameters their impacts model. involving quantities velocity, thermal, concentration, microorganism's density profiles discussed. From it noted that velocity profile increases increasing counts mixed convection. Thermal distribution enhanced due boosting values thermophoresis Brownian motion. concentration increased magnetic field strength. larger peclet number minimize Skin friction coefficient around 28% transport going be 36% variance our summary fitness

Language: Английский

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Stagnation point on the micropolar bioconvection nanofluid flow over inclined Riga plate: Keller box analysis

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(1)

Published: Jan. 1, 2025

This study aims to examine chemical reactive agents on the micropolar of a nanoliquid containing motile bacteria spreading over an incline Riga plate. An electromagnetic actuator installed surface is called It comprises array alternating electrodes arranged spanwise and permanent magnet. Because their exceptional thermal performance, nanoparticles are valued in heat transfer systems, material sciences, electronics, etc. Gyrotactic microorganisms also included prevent potential deposition. In addition, consideration given radiative flow, source/sink, convective conditions. Moreover, series converted model equations considered from principal constitution equations, effective Keller box technique numerically solves these ordinary differential equations. The effects field, concentration nanoparticles, velocity, microrotation, density profiles shown graphically. noted that velocity microrotational fields exhibit dwindled behavior as variables intensified. Velocity was enhanced with increasing values mixed convection variable modified Hartman number. For larger radiation factor, thermophoresis number, Biot Brownian motion magnitude, flow enhanced. drag friction reduce percentage form. current inspection has many uses technical study, including electromagnetism miniature pumping nanomechanics.

Language: Английский

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Entropy Optimization of Stagnant Blood Flow Systems with Tetra-Hybrid Nano additives under Viscous Dissipation, Joule Heating and Thermal Radiation Effects

Case Studies in Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 105692 - 105692

Published: Jan. 1, 2025

Language: Английский

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

Alexandria Engineering Journal, Journal Year: 2022, Volume and Issue: 68, P. 747 - 762

Published: Dec. 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.

Language: 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, Journal Year: 2023, Volume and Issue: unknown, P. 1 - 22

Published: Feb. 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.

Language: 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, Journal Year: 2023, Volume and Issue: 45, P. 102914 - 102914

Published: March 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.

Language: Английский

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