Numerical simulation of a thermally enhanced EMHD flow of a heterogeneous micropolar mixture comprising (60%)-ethylene glycol (EG), (40%)-water (W), and copper oxide nanomaterials (CuO)

Case Studies in Thermal Engineering, Journal Year: 2022, Volume and Issue: 35, P. 102046 - 102046

Published: April 22, 2022

In the past decades, thermal and rheological properties of nanofluids have attracted much attention from many investigators due to their numerous applications as promising enhanced working fluids. The present numerical analysis intended evidence main hydro-thermal mass transport appearances featuring convective flows an exceptional non-homogeneous micropolar mixture (i.e., 60% ethylene glycol, 40% pure water, copper oxide nanomaterials) over impermeable horizontal electromagnetic surface Riga plate), which is heated convectively in presence a particular variable heat source. For this purpose, several admissible physical theories hypotheses are adopted herein derive foremost conservation equations based on renovated Buongiorno's formulation some more realistic boundary conditions. Further, leading partial differential (PDEs) transformed into system ordinary (ODEs), tacked thereafter numerically using efficient GDQNRM procedure. After performing multiple validations with recent literature results, aspects studied EMHD nanofluid flow spotted accordingly then discussed comprehensively via figures tables. As prominent it found that micropolarity electrically conducting trends nanofluidic medium play important role hastening motion. Also, explored thermally enhancing influence thermophoresis diffusive mechanism can be reinforced by existence internal source along appropriate heating process.

Language: Английский

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Numerical investigation of EMHD nanofluid flows over a convectively heated riga pattern positioned horizontally in a Darcy-Forchheimer porous medium: application of passive control strategy and generalized transfer laws

Waves in Random and Complex Media, Journal Year: 2022, Volume and Issue: unknown, P. 1 - 20

Published: May 19, 2022

This investigation provides a numerical analysis of electro-magneto-hydrodynamic (EMHD) nanofluid flows past Riga pattern embedded horizontally in Darcy-Forchheimer porous medium. An advanced Buongiorno's approach is linked physically with Cattaneo-Christov's physical point view and generalized Fick's law to formulate more realistic non-homogeneous flow model, which the convective heating zero mass flux are chosen as suitable boundary conditions. In framework layer approximations, governing partial differential equations (PDEs) converted into ordinary (ODEs) via similarity transformations, solved thereafter using robust procedure. Indeed, adopted conservative laws describe reliably foremost features EMHD flows, Darcy-Forchheimer's forces show noticeable impact on momentum at large scale. Besides, it remarked that Lorentz's strengthen resulting frictional factor surface. Furthermore, significant enhancement wall heat transfer rate can be achieved practically by adjusting adequately process electromagnetic planar support.

Language: Английский

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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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MHD micro polar fluid flow over a stretching surface with melting and slip effect

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: July 3, 2023

Objective of the present analysis is to represent phenomenon Heat-mass transfer on MHD micro polar fluids caused by permeable and continuously stretching sheet along with slip impacts fostered in a porous medium. Consequently, equation energy includes term non-uniform heat source/sink. The regarding species concentration cooperates terms indicating order chemical reaction characterize chemically reactive species. application software MATLAB governing syntax bvp4c technique are employed reduce equations momentum, micro-rations, heat, into suitable required simplifications derive necessary arithmetic manipulations available non-linear equations. Various dimensionless parameters portrayed graphs essential consequences. Analysis discovered that micro-polar fluid improves velocity temperature profile while it suppresses micro-rations also magnetic parameter ([Formula: see text]) porosity reduces momentum boundary layer thickness. acquired deductions verify remarkable correspondence already reported an open literature.

Language: Английский

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Efficient passive GDQLL scrutinization of an advanced steady EMHD mixed convective nanofluid flow problem via Wakif–Buongiorno approach and generalized transport laws

International Journal of Modern Physics B, Journal Year: 2024, Volume and Issue: 38(31)

Published: Jan. 22, 2024

Owing to the practical importance of nanofluids and their adjustable thermal capabilities, this study intends develop a robust generalized differential quadrature local linearization (GDQLL) algorithm for examining realistically heat mass aspects electrically conducting during non-Darcian laminar motion nearby convectively heating vertical surface an active electromagnetic actuator (i.e., Riga plate). By invoking Wakif–Buongiorno model Oberbeck–Boussinesq approximations along with other transport laws Cattaneo–Christov non-Fick’s laws) Grinberg’s concept, set gigantic partial equations is stated appropriately in sense boundary layer describing exhaustively present EMHD mixed convective nonhomogeneous flow under passive control strategy nanoparticles within nanofluidic medium. Operationally, dimensionless forms governing are derived properly by introducing reasonable mathematical adjustments into preliminary formulation. In case, complexity leading structure reduced nonlinear coupled system ordinary equations, whose discrete numerical solutions computed perfectly via well-structured GDQLL algorithm. As foremost outcomes, it demonstrated that nanofluid its enhancement rate can be reinforced significantly through strengthening process as well improvement driven aspect Lorentz’s forces.

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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New insights into MHD squeezing flows of reacting-radiating Maxwell nanofluids via Wakif's–Buongiorno point of view

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

Published: April 30, 2024

Abstract This work presents a computational investigation of squeezing nanofluid flow under the influence thermal radiation, magnetohydrodynamics (MHD), and chemical process in constrained parallel-wall geometry. In this study, non-Newtonian behavior rate-type (Maxwell) is captured by rheological expressions that serve as foundation for formulation. kind thinking makes it possible to simulate intricate incorporates elastic viscous responses, which are useful variety situations related dynamics, rheology, materials science. Additionally, transport equations modeled properly using Wakif's–Buongiorno model. The reflecting dynamics heat-mass developed based on admissible physical assumptions, such negligible dissipation well lower magnetic Reynolds number. After that, several similarity variables introduced these get dimensionless formulation form. Akbari–Ganji's method used carry out extensive simulations. Our results show increased parameters lead larger horizontal vertical velocities. On other hand, temperature showed reverse relationship with increasing exhibiting cooling impact.

Language: Английский

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Further insights into mixed convective boundary layer flows of internally heated Jeffery nanofluids: Stefan's blowing case study with convective heating and thermal radiation impressions

Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 55, P. 104121 - 104121

Published: Feb. 17, 2024

Motivating by the importance of viscoelastic nanofluids in nanotechnological and biomedical fields, current analysis intends mainly to examine aspects 2D steady Jeffery nanofluid flows near a vertically elongating surface, case where thermal radiation affects linearly on driven with effective contribution non-uniform internal heat source. By invoking Buongiorno's model together convective heating Stefan blowing conditions, leading boundary layer differential formulation is achieved successfully based reasonable hypotheses. Moreover, corresponding solutions are computed numerically using BVP4C's method. In this respect, outcomes reveal that mechanisms exhibit both an upsurging tendency towards mass profiles. On other hand, declining impression witnessed for Sherwood's number when strengthening these processes, whilst dissimilar seen Nusselt's number. Furthermore, involved rheological parameters reverse dynamical frictional sways motion.

Language: Английский

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Numerical Simulation of MHD Sakiadis Flows of Convectively Heating Thixotropic Nanofluids in a Porous Medium Using Revised Transport Laws and Wakif-Buongiorno's Model

Partial Differential Equations in Applied Mathematics, Journal Year: 2025, Volume and Issue: unknown, P. 101071 - 101071

Published: Jan. 1, 2025

Language: Английский

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Hydrothermal and mass aspects of MHD non-Darcian convective flows of radiating thixotropic nanofluids nearby a horizontal stretchable surface: Passive control strategy

Case Studies in Thermal Engineering, Journal Year: 2022, Volume and Issue: 42, P. 102654 - 102654

Published: Dec. 16, 2022

Numerous rheological examinations attested that many products employed frequently in our daily life exhibit a thixotropic behavior with shear-thinning tendency (e.g., toothpaste, hair gels, ketchup, gypsum, and paints). Motivated by the importance of nanofluids thermal mass transfer processes their trends, this article aimed to analyze convective boundary layer flows radiating over horizontal stretching surface considering retardational influences Darcy-Forchheimer Lorentz forces invoking effective contribution Brownian thermophoresis diffusions energy concentration equations. By adopting approximations along zero flux conditions, conservation equations present non-homogeneous nanofluid flow model are derived mathematically form partial differential (PDEs) based on Buongiorno's approach. After converting leading PDEs into set nonlinear coupled ordinary (ODEs) via feasible local similarity alterations, resulting highly system governing ODEs is then solved numerically using an efficient quadrature algorithm. As findings, it found thixotropy feature reinforces motion. Besides, significant impact radiative term noticed heat rate. In contrast, induced Darcy-Forchhemier unfavorably consequently alter intensity drag forces. Further results provided also graphically tabularly.

Language: Английский

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