Impact of external pressure and nanoparticles on heat transfer in couple stress Oldroyd-B fluid: A numerical study

Results in Physics, Год журнала: 2025, Номер unknown, С. 108173 - 108173

Опубликована: Март 1, 2025

Язык: Английский

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Enhanced heat transfer analysis of Casson hybrid nanofluid in blood with thermal radiation through a stretching sheet: A comprehensive study of analytical and numerical method

Proceedings of the Institution of Mechanical Engineers Part N Journal of Nanomaterials Nanoengineering and Nanosystems, Год журнала: 2025, Номер unknown

Опубликована: Янв. 4, 2025

The investigation of the nonlinearly expanding surface using Casson model has been conducted, with a focus on unique mixture known as hybrid nanofluid. This specific nanofluid consists blood suspended copper and Al 2 O 3 oxide. distinct shape nanoparticles enables swift mobility within nanofluid, accelerating their movement. We derived novel set similarity transformations, where variable is dimensionless appears in formulation function all independent variables. Runge-Kutta Fehlberg 4–5 th methodology was employed to numerically solve modified equations. In prior research papers, Homotopy perturbation Sumudu transform method (HPSTM) utilized derive analytical solution solely for momentum equation. However, this current study, applied coupled heat equations resulting an innovative that not previously explored. Comparison numerical results demonstrates precision present work. impact components thermal velocity plots explained.

Язык: Английский

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Radiation convection flow of Eyring Powell–Prandtl Eyring nanofluid over a convectively heated surface with thermo-chemical flux interactions

Multiscale and Multidisciplinary Modeling Experiments and Design, Год журнала: 2025, Номер 8(2)

Опубликована: Янв. 15, 2025

Язык: Английский

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Numerical simulation of hybrid nanofluid flow with homogeneous and heterogeneous chemical reaction across an inclined permeable cylinder/plate

Energy Exploration & Exploitation, Год журнала: 2024, Номер 42(6), С. 2270 - 2288

Опубликована: Авг. 18, 2024

The current study investigates the steady two-dimensional (2D) hybrid nanofluid (Hnf) flow over an inclined permeable plate/cylinder. Hnf has been examined in context of mixed convection, heterogeneous/homogenous chemical reaction, and medium. is prepared by dispersing silver (Ag), iron ferrite (Fe 3 O 4 ) nanoparticles (NPs) water. research motivated increasing demand for highly efficient cooling devices a variety industries energy-associated operations. energy transmission fluid are mathematically specified using coupled nonlinear system partial differential equations (PDEs). PDEs simplified into dimensionless form ODEs, which then further numerically treated with MATLAB package based on finite difference method (bvp4c). It noticed that permeability component develops heat transfer curve while decreasing rate fluid. impact source/sink increases profile. Moreover, plate surface demonstrates dominant behavior transportation than cylinder variance Ag-Fe -NPs.

Язык: Английский

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Impact of similarity transformations on hybrid nanofluid thermal behavior with thermal radiation on nonlinear stretching surface via Hermite wavelet transformations

Radiation effects and defects in solids, Год журнала: 2024, Номер unknown, С. 1 - 25

Опубликована: Дек. 3, 2024

An investigation into a non-linearly stretching surface was conducted, focusing on unique combination known as shape-dependent hybrid nanofluid. The nanofluid consisted of mixture ethylene glycol and water, with dispersed multi-walled carbon nanotubes (MWCNT) silver (Ag) particles various shapes, including spherical, columnar, lamellar. Many fluid flow problems require the use similarity transformations to simplify problem. However, it is crucial derive an appropriate set for each specific Unfortunately, many researchers have overlooked this step or used inappropriate borrowed from other works, leading erroneous results. This paper aimed address issue by deriving correct problem, ensuring that variable dimensionless dependent all independent variables in formulation. Additionally, velocity appropriately dimensioned. semi-analytical solution modified differential equations obtained using Hermite wavelet transformation method, while numerical coupled solved 4th – 5th order Runge–Kutta-Felhberg method. A 64.5% increase Prandtl number leads 53.49% decrease temperature. 800% radiation parameter results 105.76% rise 100% Eckert causes temperature 71.82%. work emphasizes importance problems.

Язык: Английский

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Analysis of MHD Flow With Convective Boundary Conditions Over a Permeable Stretching Surface Using a Physics‐Informed Neural Network

Heat Transfer, Год журнала: 2025, Номер unknown

Опубликована: Янв. 3, 2025

ABSTRACT In this study, we examine the impact of heat and mass transfer magnetohydrodynamic (MHD) flow through a stretching permeable surface while considering chemical reaction convective boundary conditions. A physics‐informed neural network (PINN) approach is employed to obtain precise solutions, representing key novelty work. The governing partial differential equations were transformed into nonlinear ordinary by applying similarity transformations. These are integrated PINN's loss function enforce initial conditions, enabling model learn effectively during training. We analyze various parameters related velocity, thermal, concentration distributions present results graphically. findings indicate that injecting fluid leads reduction in velocity gradient as moves away from surface, whereas suction has opposite effect, increasing gradient. parameter significantly reduces layer thickness, an effect further enhanced magnetic parameter. thermal layers primarily affected Schmidt Prandtl numbers. Additionally, slows near sheet, increases temperature at plate's surface. Our proposed method shows significant agreement with previous studies, validating its effectiveness solving complex MHD problems. provide deeper insights dynamics flows have implications for applications involving transfer, such reactors, cooling systems, material processing, environmental management.

Язык: Английский

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Mathematical model and stability of SWCNT- and MWCNT-based nanofluid flow with thermal and chemically reactive effects inside a porous vertical cone

Frontiers in Chemistry, Год журнала: 2025, Номер 12

Опубликована: Янв. 14, 2025

This study investigates the significance of single-walled (SWCNTs) and multi-walled (MWCNTs) carbon nanotubes with a convectional fluid (water) over vertical cone under influences chemical reaction, magnetic field, thermal radiation saturated porous media. The impact heat sources is also examined. Based on flow assumptions, fundamental equations are modeled as partial differential (PDEs). Using appropriate transformation, PDEs converted to ordinary then solved via RK4 in MATLAB. To confirm results, comparison made previously investigated problem, finding good agreement. emerging dimensionless physical parameters problem determined through graphs tables. Analysis reveals dual solution for suction injection parameter. Therefore, stability examination implemented stable solution. aim analyze SWCTs MWCTs establish that only first reliable. analysis here signifies large volume fractions can be substituted increase nanofluid movement. mathematical model graphical demonstration indicate velocity MWCNTs higher than SWCNTs. Moreover, local skin friction, rate transfer, Nusselt Sherwood numbers improve Biot number.

Язык: Английский

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Analytical investigation of fireball dynamics and radiative heat damage in energetic explosions

Instrumentation Science & Technology, Год журнала: 2025, Номер unknown, С. 1 - 20

Опубликована: Янв. 22, 2025

Язык: Английский

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Combined Flow and Temperature Nonuniformity in Compact Cross‐Flow Three‐Fluid Heat Exchangers

Heat Transfer, Год журнала: 2025, Номер unknown

Опубликована: Фев. 3, 2025

ABSTRACT Cryogenic processes often involve the heat interaction of multiple fluids and are highly sensitive to even minor variations in operating conditions. Hence, flow temperature nonuniformity adversely impact performance thermal systems, their combined occurrence can be especially detrimental. The transient response effectivity a cross‐flow three‐fluid exchanger investigated while considering at inlet section. Four modes opted, which replicates pragmatic situation existing working exchangers, system is evaluated by its alignment with uniform mode. Flow implicated both section within core all along effect fluid back mixing. “Dankwert's” boundary condition specifically used account for effects axial dispersion fluids. model incorporates longitudinal conduction partition walls, “finite difference method” employed solve partial differential equations. To best our knowledge, present study first attempt analyze exchangers under nonuniformity. It learned that degraded 31.5% enhanced 1% mode QPQ 1 respectively. Under both, settles down somewhere amid found 8%. higher NTU comes up sharp peak distribution, makes more prone cracks.

Язык: Английский

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Computational Insights Into Nanoscale Heat Dynamics of Chemically Reactive and Magnetized Carreau Hybrid Bio‐Nanofluid Using a Multilayer Supervised Neural Computing Scheme

International Journal for Numerical Methods in Fluids, Год журнала: 2025, Номер unknown

Опубликована: Фев. 16, 2025

ABSTRACT The use of well‐designed nanoparticles in blood fluid can enhance heat transfer during medical interventions by improving thermophysical characteristics. It enables for targeted delivery to specific sites increasing surface area better exchange, which is crucial more efficient treatments. current attempt emphasizes on the enhanced thermal transport mechanism an aluminium alloy suspended Copper‐based nanofluid over inclined cylindrical containing motile gyrotactic microbes. Carreau viscosity model implemented expose intricate nature bio‐nanofluid, while heating source used simulate bio‐convective mechanism. In addition, hybrid bio‐nanofluids exhibits temperature effects that depend nanoparticle volume friction dependencies related dynamics spherical and shapes with distinct shape factors. physical generated system partial differential equations (PDEs) derived then transformed into a dimensionless ordinary (ODEs) using similarity functions. resulting reduced first‐order numerical solution obtained computational procedure. trend profiles examined mean governing parameters. Results are interpreted via tabular data MATLAB visualization. observed gravity impede flow direction magnetic field orientation causes decrease velocity increase profile. A declining noted microbe profile due higher values Peclet number numeric growth value microbe's factor. Heat rate drag force coefficients both differ reasonable amounts. proposed results build bridge between traditional computational‐based simulations advanced ANN‐based approaches, establishing robust foundation applications biomedical engineering.

Язык: Английский

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