Analysis of thermal characteristics for MHD peristaltic movement of hybrid nanofluid with electro-osmosis, Ohmic heating and Hall effects

International Journal of Heat and Fluid Flow, Journal Year: 2024, Volume and Issue: 107, P. 109405 - 109405

Published: May 13, 2024

Language: Английский

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Numerical analysis of heat and mass transfer for forced convection radially magnetized Williamson nanofluid over a curved stretching surface

Numerical Heat Transfer Part A Applications, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 17

Published: May 8, 2024

Present communication investigates the magnetohydrodynamics (MHD) bioconvection Williamson nanofluid with mass and thermal characteristics caused by swimming of gyrotactic microorganisms subjected to a radially magnetic field radiation through curved stretching surface. To emphasize significance engineering processes, this novel mathematical model is designed simulate transportation energy boundary layer flow non-Newtonian nanofluid, taking into account influences thermophoresis, density motile microbes, Brownian motion. Based on these assumptions, fundamental governing equations are initially modeled in terms partial differential (P DEs) theory then formulated system ordinary (ODEs) utilizing similarity transformations. The numerical solution for given nonlinear system, along their respective conditions, computed using BVP4c package MAT LAB. comprehensively evaluate influence various emerging parameters, results discussed graphs tables nanofluid's temperature, concentration profile, local Sherwood number, skin fraction, axial velocity, heat transfer, distribution microorganisms. velocity experiences decrease simultaneous increase both curvature parameters. As primary finding, microorganism profile exhibits substantial concerning parameter. Similarly, including thermophoresis motion, parameter, enhance temperature nanofluid.

Language: Английский

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Electromagnetic control and heat transfer enhancement in exothermic reactions experiencing current density: The study preventing thermal explosions in reactive flow

Applied Rheology, Journal Year: 2024, Volume and Issue: 34(1)

Published: Jan. 1, 2024

Abstract Thermal explosions in reactive flows present an important risk to industrial engineering systems, where uncontrolled exothermic reactions can compromise safety and operational integrity. This study investigates the theoretical solutions related thermal runaway heat transport a branch-chain bifurcation scenario influenced by hydromagnetic Powell–Eyring fluid flow. By incorporating factors such as current density variable properties, we aim enhance safety, reliability, efficiency of operations, thus contributing development more robust sustainable systems. Notably, is characterized active behavior under bimolecular kinetics, challenging traditional material assumptions. Utilizing spectral collocation scheme alongside exact solutions, derive critical parameters, including flow velocity, density, criticality, entropy generation rate, propagation. Our findings reveal that increased electric field conductivity significantly enhances along channel walls, driven combined effects Frank–Kamenetskii term loading. Furthermore, understanding branched-chain essential for preventing engine failures, underscoring practical implications this research contexts.

Language: Английский

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Thermal transport of radially magnetized peristalsis of non-Newtonian nanofluid through an asymmetric curved channel

Numerical Heat Transfer Part B Fundamentals, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 24

Published: June 18, 2024

Present examination explores the heat and mass transfer phenomena for magnetohydrodynamics (MHD) peristaltic transport of diethylene glycol (DEG)-based Cross nanofluid through an asymmetric curved channel. The thermal characteristics are established assessment Buongiorno nano-liquid model, which allows to identify intriguing features thermophoretic Brownian diffusion coefficients. Further, velocity slip conditions enforced on walls. influences radiation, radius-dependent magnetic field viscous dissipation also taken into consideration. governing equations simplified by employing lubrication theory ("biological estimate creeping transportation phenomenon"), resulting system is tackled numerically. Impacts different flow parameters nanofluid's velocity, nanomaterials concentration profile, transfer, streamlines, temperature nanofluid, stresses at wall analyzed via graphs tables. findings this investigation report that enhances against Hartmann Brinkman numbers, whereas it declines radiation parameter. distribution profile decreases motion while increases thermophoresis a development in stresses, rates boundary seen better values number. Additionally, higher parameter show increasing behavior near walls effects MHD with magnesium aluminate nanoparticles suspended DEG base fluid-based conduit have many uses industry, organic compounds, biomedical engineering, commercial productions, such as brake fluid, tobacco, polyester resins, certain dyes, printing ink, polyurethanes, glue, antifreeze, nitrocellulose, oils, cigarettes, plasticizers, so forth. DEG-based nanofluids used human medications, including acetaminophen sulfanilamide, can result incidents poisoning, some been fatal, either intentionally or unintentionally.

Language: Английский

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Peristalsis of hybrid nanomaterial in convectively heated asymmetric configuration

Journal of Thermal Analysis and Calorimetry, Journal Year: 2024, Volume and Issue: 150(1), P. 175 - 185

Published: Dec. 24, 2024

Language: Английский

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Theoretical investigation on Rh(III)-catalyzed switchable C–H alkenylation of enamide with enone and Rh(I)-catalyzed decarbonylative version of 1,2,3,4-tetrahydroquinoline with anhydride

Thermal Science and Engineering, Journal Year: 2024, Volume and Issue: 7(1), P. 6267 - 6267

Published: July 1, 2024

The mechanism is investigated for Rh(III)-catalyzed C-H alkenylation of enamide with enone and Rh(I)-catalyzed decarbonylative version 1,2,3,4-tetrahydroquinoline anhydride. former contains β-C(sp2)−H activation enamide, 1,2-migratory insertion enone, β-hydride elimination or protodemetalation additional HCl. diastereoselectivity kinetically controlled favoring N-(2Z,4E)-butadiene while the regio-divergence switchable to alkylation. latter composed rate-limiting oxidative addition anhydride Rh(I), C8-selective C–H after ligand exchange producing tBuCO2H six-membered rhodacycle, decarbonylation releasing CO as new carboxylate reductive Rh-alkenyl precursor leading C8-alkenylated product. whole process huge heat release favorable thermodynamically all barriers capable overcome under microwave assistance. positive solvation effect suggested by decreased absolute energies in solution compared gas. These results are supported Multiwfn analysis on FMO composition specific TSs, MBO value vital bonding, breaking.

Language: Английский

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Numerical heat transfer enhancement in MHD boundary layer flow with Darcy-Forchheimer Bioconvection Nanofluid

Thermal Science and Engineering, Journal Year: 2024, Volume and Issue: 7(2), P. 6914 - 6914

Published: July 9, 2024

Scientists have harnessed the diverse capabilities of nanofluids to solve a variety engineering and scientific problems due high-temperature predictions. The contribution nanoparticles is often discussed in thermal devices, chemical reactions, automobile engines, fusion processes, energy results, many industrial systems based on unique heat transfer results. Examining bioconvection non-Newtonian reveals applications advanced fields such as biotechnology, biomechanics, microbiology, computational biology, medicine. This study investigates enhancement with impact magnetic forces linearly stretched surface, examining two-dimensional Darcy-Forchheimer flow blood. research explores influence velocity, temperature, concentration, microorganism profile fluid assumptions. investigation utilizes blood primary for nanofluids, introducing like zinc oxide titanium dioxide (. aims explore their interactions potential field biomedicine. In order streamline complex scheme partial differential equations (PDEs), boundary layer assumptions are employed. Through appropriate transformations, governing (PDEs) associated conditions transformed into dimensionless representation. By employing local non-similarity technique second-degree truncation utilizing MATLAB’s built-in finite difference code (bvp4c), modified model’s outcomes obtained. Once calculated results published satisfactorily aligned, graphical representations used illustrate analyze how changing variables affect characteristics under consideration. visualize numerical variations drag coefficient Nusselt number, tables been specially designed. Velocity -blood decreases increasing values , while temperature increases . Concentration For rising number model introduces novel approach by conducting non-similar analysis Darchy-Forchheimer blood-based nanofluid presence field.Scientists field.

Language: Английский

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Challenges and way forward in the handling and disposal of battery waste: Towards sustainable practices

Thermal Science and Engineering, Journal Year: 2024, Volume and Issue: 7(2), P. 7048 - 7048

Published: July 10, 2024

The management and disposal of battery waste, particularly lead-acid batteries, present numerous challenges that must be addressed to ensure environmental protection, public health, sustainable resource management. This thesis examines the multifaceted nature these explores potential solutions for Drawing on insights from prior research, field observations, stakeholder interviews, literature reviews, study synthesizes existing knowledge inform strategies mitigating environmental, safety, economic impacts associated with waste. current scenario waste highlights significant challenges, including pollution, health risks, safety hazards, recycling regulatory compliance issues, technological limitations, infrastructure constraints, need awareness education. Countermeasures address encompass interventions, innovations, development, capacity building, engagement initiatives. By integrating findings diverse sources, this aims contribute base propel

Language: Английский

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Theoretical investigation on synthesis of fused [1,2,3]-triazoloheteroarene via DBU-catalyzed intramolecular azo annulation and 3,4,5-trisubstituted [1,2,4]-triazole via I2‑catalyzed cycloaddition

Thermal Science and Engineering, Journal Year: 2024, Volume and Issue: 7(2), P. 6745 - 6745

Published: July 22, 2024

The mechanism is investigated for DBU-catalyzed intramolecular azo annulation of N-tosylhydrazone and I2‑catalyzed cycloaddition phenyl tosyl hydrazone with N-phenylbenzamidine. former contains rate-limiting α-elimination tosylate facilitated by DBU affording amphiphilic nitrene intramolecular, 5-endo-trig cyclization forming [1,2,3]-triazoloheteroarene. This method also applicable other nonpyridine heteroarene based on enhanced activity DBU. latter composed eight steps including activation mediated I2, nucleophilic addition amidine, electron transfer via two times proton transfer, attack followed third achieving ring closure final reductive elimination HI, TsNH2 yielding 3,4,5-trisubstituted [1,2,4]-triazole. step under I2 catalysis. positive solvation effect suggested decreased absolute energies in solution compared gas. These results are supported Multiwfn analysis FMO composition specific TSs, MBO value vital bonding, breaking.

Language: Английский

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