Mixed convective magnetohydrodynamic and thermally radiative flow of reactive couple stress MWCNT–Ag/C2H6O2 hybrid nanofluid in a porous vertical channel: Entropy analysis

Physics of Fluids, Journal Year: 2023, Volume and Issue: 35(12)

Published: Dec. 1, 2023

This paper is concerned with the analysis of mixed convective magnetohydrodynamic (MHD) flow a reactive couple stress multi-walled carbon nanotube −Ag/C2H6O2 hybrid nanofluid in porous vertical channel subjected to quadratic thermal radiation along uniform inclined magnetic field applied walls. The driven by pressure gradient force and buoyancy force, which modeled based on nonlinear Boussinesq approximation. temperature-dependent reaction rate reactant molecule derived using Arrhenius law. momentum energy equations that govern system are consideration slip conditions. governing non-dimensionalized applying relevant dimensionless parameters solved homotopy method (HAM). To analyze irreversibilities system, entropy generation number Bejan defined. Different important physical developing considered for analysis, their effects scrutinized velocity temperature profiles generation. emphasis given concentration nanoparticles arising due reactions fluid, field, radiation, material. reveals fluid lowers higher nanoparticles, parameter, Hartmann number, whereas develops inclination field. increases rising depletes nanoparticle concentration, angle. irreversibility remains dominant heat transfer Frank-Kameneskii activation parameters, angle inclination.

Language: Английский

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Uncertainties in regularized long-wave equation and its modified form: A triangular fuzzy-based approach

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(4)

Published: April 1, 2024

This article explores the solution of regularized long-wave equation (RLWE) and modified RLWE (MRLWE) using a semi-analytical approach known as homotopy perturbation transform method (HPTM), revealing characteristics shallow water waves ion-acoustic plasma waves. The effectiveness accuracy technique are demonstrated by solving scenarios involving single solitary wave (SSW) two (TSW) presented compared with exact RLWE. Furthermore, we introduced fuzzy model for both MRLWE, considering uncertainties in coefficients related to amplitude, understand behavior (FRLWE) MRLWE (FMRLWE) SSW examining various numerical results MATLAB.

Language: Английский

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Impact of thermal radiations and viscous dissipation during the boundary layer non‐Newtonian fluid flow past a slender needle: Probed by machine learning

ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Journal Year: 2025, Volume and Issue: 105(2)

Published: Feb. 1, 2025

Abstract We examine a new model for the Casson fluid (CF) migration near thin needle. The needle is moving along free stream with constant velocity. impacts of nonlinear thermal radiation, Joule heating, magnetic fields, and viscous dissipation are considered in flow. flow modeled basic equations, whose complexity reduced similarity transformations. introduced artificial neural network (ANN) to tackle first‐order system equations. ANN trained numerical methods (bvp4c) solution that uses Levenberg‐Marquardt algorithm by choosing best possible weights. A comprehensive graphical description provided varying heating parameters, Eckert number, radiation parameter, velocity ratio Prandtl size rise reduce flux increases transport. CF parameter gradient. number increase profile their increasing values. regression plots display data utilized curve fitting, while error histograms depict minimal zero error. Furthermore, mean square performance validation each presented. For validation, present results compared tabular form published literature, where current approach validated.

Language: Английский

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Thermal transport and irreversibility analysis for radially magnetized Carreau–Yasuda nanofluids flow over polished surfaces

Modern Physics Letters B, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

A major challenge in modern industry is the need for efficient heat transfer fluids, as conventional fluids often do not provide necessary efficiency heating and cooling processes. Nanofluids, seen future of are developed by dispersing nanoparticles into base fluids. Owing to their unique dynamic thermophysical properties, these innovative nanofluids have a broad spectrum applications nanotechnology advanced systems. Based on nanofluids, flow composed graphene suspended lubricant oil with studied here. Flow induced curved stretching sheet. The surface sheet considered be polished uniformly, which hence facilitates velocity slip. novelty this study lies utilizing rheological properties dispersed oil-based fluid, empirically investigated Bakak et al. (2021). Their findings suggest that nanofluid exhibits non-Newtonian behavior, experimental data closely aligning Carreau–Yasuda model. radially varying magnetic field influences generating Lorentz force Ohmic heating. In view experimentally reported results, depicted using Furthermore, configuration influenced thermal radiation, source, viscous dissipation, convective at boundary. Irreversibility analysis carried out propose ways energy optimization. Boundary layer approximations utilized model partial differential equations (PDEs) governing system. By applying non-similarity transformation, original PDEs converted dimensionless nonlinear PDEs. local approach, truncated second order, reducing them ordinary (ODEs) can more easily solved. resulting system tackled through BVP4c algorithm MATLAB. Influences pertinent parameters profile, drag force, isotherms, nanofluid’s temperature, streamlines, entropy generation number, rates, Bejan number analyzed graphs tables. Findings indicate temperature distribution improves higher values Biot Weissenberg number. Additionally, decreases increasing Also, it noted velocity. demonstrates direct relationship profile. magnitude coefficient curvature parameter volume fraction nanoparticles. Heat rises elevated parameter, Eckert source radiation but an increase

Language: Английский

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Exploring slip effects of ferrofluid film flow over a slanted rough surface

Journal of Fluid Mechanics, Journal Year: 2024, Volume and Issue: 982

Published: March 5, 2024

We examined the influences of slip parameters on velocity and thermal characteristics a ferrofluid film fixed thickness. The flow is generated rough inclined whirling surface that positioned in an external magnetic (dipole) field. similarity transformation reduces model equations (continuity, momentum, energy concentration), solution normalized coupled ordinary differential carried out through finite element process. effects, Brownian motion, thermophoresis heat source (radial, tangential axial), gravity (drainage, induced), temperature profile concentration are determined. both decreased by increase parameter, whereas drainage, induced, radial axial flows increased. Enlarging parameter decreases temperature. Improving (velocity thermal) also improves profile. Both Nusselt Sherwood numbers found to improve improving while they decrease decreasing parameter. results insights from this work could be applied wide range medicinal fields, such as targeted medication therapy delivery, tissue engineering, etc. well different industrial processes including coating, lubrication, transfer,

Language: Английский

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Magnetized Casson hybrid nanofluid flow under the influence of surface-catalyzed reactions over a porous moving wedge

AIP Advances, Journal Year: 2024, Volume and Issue: 14(8)

Published: Aug. 1, 2024

The main finding of this work focuses on the numerical analysis magnetized Casson hybrid nanofluid flow via porous moving wedge with surface-catalyzed reactions. Thermal radiation and chemical reactions are also investigated as heat mass transport mechanisms. Feature nanofluid, which contains nanoparticles, such nickel zinc ferrite (NiZnFe2O4) manganese (MnZnFe2O4) nanoparticles engine oil a working fluid, is discussed. These nanofluids (NiZnFe2O4 + MnZnFe2O4/C2H18) offer significant improvements in thermal conductivity, transfer efficiency, magnetic control, making them ideal for automotive, industrial, fluid applications. dynamics system have been modeled using non-linear PDEs, transformed into dimensionless ODEs appropriate similarity conversions. solved fourth- fifth-order Runge–Kutta–Fehlberg method along shooting technique. Results indicate that increased parameters media accelerate heterogeneous catalysis, leading to more vigorous shorter reaction times. Furthermore, incorporation NiZnFe2O4 MnZnFe2O4 nps base substantially improves both velocity energy transmission rate. Engine containing could improve performance efficiency automotive cooling systems lubrication effectiveness.

Language: Английский

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Inertial drag role on Darcy Forchheimer flow of ternary nanofluid with interaction of radiative heat energy: Homotopy analysis method

Modern Physics Letters B, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 29, 2024

The ternary hybrid nanofluids have potential in different technological arenas such as biomedical engineering, solar energy, atomic reactors, the automotive industry, and heat pipes. Given these facts, along with recent advancements nanotechnology their extensive applications, this research focuses on MoS 2 -Fe 3 O 4 -ZrO /CH OH nanofluid flow through bidirectional stretching sheets. We transformed coupled nonlinear partial differential equations for advanced model into nondimensional ordinary using similarity transformations, then semi-analytically apply homotopy analysis methodology (HAM). displayed physical features of factors graphically alongside flowing based velocity temperature. presented a evaluation tabular format rate transmission compared results existing work to ensure validity. These meaningful outcomes indicate that axial fluid is compressed by magnetic interaction, inertial drag, porosity stretchable ratio, while it augmented Powell-Eyring factor changed Hartmann value. effect increasing transverse speed boosts drag.

Language: Английский

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