Analyzing variable characteristics on a Newtonian fluid flow over a rotating sphere in a variable porous medium with entropy generation analysis DOI
Muhammad Ramzan,

Naila Shaheen,

Nazia Shahmir

et al.

ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Journal Year: 2025, Volume and Issue: 105(5)

Published: April 23, 2025

Abstract Latterly, energy scarcity is assumed to be a major issue in the manufacturing process since chunk of produced lost this transit. As heat transmission an irreversible process, it necessary limit entropy during such flows. Consequently, rationale paper investigate generation on transient viscous fluid flow near stagnation point past rotating sphere immersed variable porous media. For enhanced realism, model incorporates temperature‐dependent thermal conductivity, viscosity, and mass diffusion overcoming limitations constant values often used simpler models. The novelty envisioned bolstered by integrating solutal stratifications, combined with irreversibility analysis. available literature possesses bulk articles focusing diffusivity. However, there studies that discuss traits these characteristics are more real‐world modeling. exclusive feature study lies investigating over medium diffusion. numerical outcome, bvp4c implemented. behavior dimensionless parameters corresponding profiles illustrated through graphs tables. It observed increasing porosity parameter primary velocity profile escalates. Growing viscosity portray for depict decline secondary profile. Temperature decays augmented stratification parameter. Surface drag force elevates amplifying rotation streamwise rotational direction. Enhancement conductivity optimizes rate transmission. By varying Brinkman number optimizes.

Language: Английский

Electrically conducting mixed convective nanofluid flow past a nonlinearly slender Riga plate subjected to viscous dissipation and activation energy DOI
Bilal Ali, Sidra Jubair, Zafar Mahmood

et al.

Modern Physics Letters B, Journal Year: 2024, Volume and Issue: 38(33)

Published: March 27, 2024

This paper reports the mass and energy transmission characteristics of an electrically conducting mixed convective nanofluid flow past a stretching Riga plate. An additional effect viscous dissipation, Arrhenius activation heat source is also studied. The transmissions are evaluated by zero-mass flux nanoparticle boundary conditions. Buongiorno’s relations proposed for Brownian motion thermophoretic diffusion. similarity substitutions employed to derive non-dimensional set modeled equations. obtained equations numerically processed via parametric continuation method (PCM). Several factors affecting velocity, energy, distributions graphically discussed. It has been perceived that fluid velocity field declines with influence power index (m), while improves upshot modified Hartmann number (Q). Schmidt chemical reaction diminishes concentration profile [Formula: see text]. Furthermore, curve enhances thermophoresis factor, Biot Eckert number.

Language: Английский

Citations

33
Analysis of unsteady MHD fluid flow across two parallel discs with uniform fluctuation subject to modified Hall and activation energy DOI
Bilal Ali, Sidra Jubair, Zafar Mahmood

et al.

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

Published: Jan. 22, 2024

This study intends to examine the consequences of externally applied magnetic field and modified Hall effect on nanofluid flow across two symmetrically spinning extending discs, where continuously upper disc moves upward downward. The lower is vertically fixed. discs rotate move vertically, generating a 3D flow. mass density, heat transfer motion have been evaluated modeled in form system partial differential equations (PDEs) with an additional influence activation energy, source chemical reaction. PDEs ordinary set by employing resemblance substitution method. obtained ODEs further solved through numerical approach (bvp4c). results are compared bvp4c package published work for validity purposes. In case downward displacement disc, characteristics significant impact velocity curve. energy curve elevates movement while it reduces fluctuation. Furthermore, transmission rate enhances hall current, diminishing reaction rate.

Language: Английский

Citations

28
Investigation of entropy generation in the existence of heat generation and nanoparticle clustering on porous Riga plate during nanofluid flow DOI
Zafar Mahmood, Khadija Rafique,

Adnan Abbasi

et al.

Materials Today Communications, Journal Year: 2024, Volume and Issue: 38, P. 108165 - 108165

Published: Jan. 20, 2024

Language: Английский

Citations

20
MHD unsteady flow of carbon nanotubes over nonlinear radiative surface with anisotropic slip conditions: computational analysis of irreversibility for Yamada-Ota model DOI Creative Commons
Zafar Mahmood, Khadija Rafique,

Adnan Abbasi

et al.

Engineering Applications of Computational Fluid Mechanics, Journal Year: 2024, Volume and Issue: 18(1)

Published: Feb. 1, 2024

In this study, the Yamada-Ota model is used to look for an analysis of irreversibility when there nonsymmetric magnetohydrodynamic flow inside a nanoliquid made carbon nanotubes (CNTs) across unsteady three-dimensional stretching surface. investigation, both single- and multi-walled (SWCNTs MWCNTs, respectively) are considered, as they suspended in water solution. Anisotropic slip conditions, nonlinear thermal radiation, induced magnetic field all accounted model. The PDEs changed into group Equations using non-similarity transformations then solved by BVP4c program MATLAB. effects important parameters like strength, unsteadiness, nanoparticle volume fraction, conditions radiation also looked at. Increasing percentage results greater velocity SWCNTs than MWCNTs. profile entropy production exhibits upward trend relation Φ, M , Br, Rd θw however, it has downward parameter α. Bejan number shows concentration α, while showing decline cases θw.

Language: Английский

Citations

19
Numerical investigation of entropy generation of Joule heating in non-axisymmetric flow of hybrid nanofluid towards stretching surface DOI Creative Commons
Khadija Rafique, Zafar Mahmood,

Adnan Abbasi

et al.

Journal of Computational Design and Engineering, Journal Year: 2024, Volume and Issue: 11(2), P. 146 - 160

Published: March 6, 2024

Abstract The industrial sector has shown a growing interest in hybrid nanofluids affected by magnetohydrodynamics (MHD) owing to their wide range of applications, including photovoltaic water heaters and scraped surface heat exchangers. main purpose this study is look at how entropy created nanofluid ${\rm{A{{l}_2}{{O}_3}{-}Cu}}$ mixed with ${\rm{{{H}_2}O}}$ non-axisymmetric stagnation point flow Joule heating viscous dissipation. By using appropriate non-similarity transformations, the partial differential equations (PDEs) governing boundary layer region issue are transformed into set non-linear PDEs. BVP4c MATLAB program, which uses local additional truncation, may fix problem. velocity profiles both directions grow when values ${{\phi }_2},\ M,\lambda $, A parameters increase. temperature profile rises as $Ec$ lowers }_2}$ M obtained numerical findings demonstrate significant impacts on transfer rate fluid nanofluid. When concentration nanoparticles magnetic parameter heightened, there an enhancement seen skin friction coefficient decline rate. In addition, production shows increasing tendency function M,$ $Br,$ while demonstrating decreasing $\alpha $. Bejan number positive correlation $ but negative variables $Br$.

Language: Английский

Citations

19
Unsteady MHD flow analysis of hybrid nanofluid over a shrinking surface with porous media and heat generation: Computational study on entropy generation and Bejan number DOI
Khadija Rafique, Zafar Mahmood,

Adnan Abbasi

et al.

International Journal of Heat and Fluid Flow, Journal Year: 2024, Volume and Issue: 107, P. 109419 - 109419

Published: May 9, 2024

Language: Английский

Citations

19
A theoretical analysis of the ternary hybrid nano-fluid with Williamson fluid model DOI Creative Commons
M. Faizan, M. Ajithkumar,

M. Vinodkumar Reddy

et al.

Ain Shams Engineering Journal, Journal Year: 2024, Volume and Issue: 15(8), P. 102839 - 102839

Published: May 24, 2024

The commercialization of nanotechnology is significant in the areas pharmaceutical delivery, supercapacitors, catalysts, microelectronics, thermal energy plants, automotive cooling, fuel cell membranes, crack-resistant paint, and water purification. Here Darcy-Forchheimeir hydromagnetic flow radiative Williamson trihybrid MOS2+ZrO2+GO/Ethyleneglycol nanofluid subject to entropy generation investigated. Molybdenum disulfide MOS2, zirconium dioxide ZrO2, graphene oxide GO nanoparticles base fluid (Ethylene glycol) are incorporated. Darcy-Forchhiemeir porous medium dissipative heat transfer attributes considered. Furthermore, convective boundary condition incorporated for analysis. Thermal radiation employed perform a study phenomenon while keeping mind practical applications. governing PDEs converted into ODEs by appropriate transformations. Using homotopy analysis method (HAM), resulting non-dimensional systems addressed analytically. implications various factors on transmission rate friction factor tri-hybrid nanofluid, hybrid MOS2+ZrO2/Ethyleneglycol nanomaterial, nanoliquid MOS2/Ethyleneglycol investigated through tables. Further, velocity, temperature, rate, Bejan number all three nano-liquid scenarios response influential parameters (Weissenberg We, magnetic parameter M, Rd, Brinkman Br, suction S, Fr, Biot Bi) graphically evaluated. velocity declines as grows. A greater Weissenberg results an increased number. Temperature increase with higher value. enhanced drag force. decreases increasing effect. In conclusion, current outcome excellent invention that came before it.

Language: Английский

Citations

17
Implication of radiation on the thermal behavior of a partially wetted dovetail fin using an artificial neural network DOI Creative Commons

P. Nimmy,

K.V. Nagaraja,

Pudhari Srilatha

et al.

Case Studies in Thermal Engineering, Journal Year: 2023, Volume and Issue: 51, P. 103552 - 103552

Published: Oct. 4, 2023

The simultaneous convection-radiation heat transfer of a partially wetted dovetail extended surface is investigated in this study. Also, the temperature variance behavior (DES) estimated through thermal models for wet and dry conditions using neural network with Levenberg-Marquardt scheme (NNLMS). corresponding governing energy equations fin are presented as set ordinary differential (ODE), which reduced to non-dimensional form dimensionless terms. Further, resulting coupled conductive, convective, radiative ODEs numerically solved utilizing Runge-Kutta-Fehlberg fourth-fifth order (RKF-45) scheme. Using graphical illustrations, resultant solutions physically determined by considering effects various nondimensional variables on behavior. From outcomes, it established that conductivity parameter enhances distribution fin, an upsurge convection-conduction variable, ratio parameter, radiation–conduction, diminishes profile considered surface. modelled problem's NNLMS efficacy demonstrated achieving best convergence unique assessed quantified results. outcomes indicate strategy successfully resolves problem.

Language: Английский

Citations

39
Entropy analysis of Hall effect with variable viscosity and slip conditions on rotating hybrid nanofluid flow over nonlinear radiative surface DOI
Khadija Rafique, Zafar Mahmood,

Adnan Abbasi

et al.

Materials Today Communications, Journal Year: 2024, Volume and Issue: 39, P. 109167 - 109167

Published: May 10, 2024

Language: Английский

Citations

17
Computational analysis of MHD hybrid nanofluid over an inclined cylinder: Variable thermal conductivity and viscosity with buoyancy and radiation effects DOI
Khadija Rafique, Zafar Mahmood,

Adnan Abbasi

et al.

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

Published: Sept. 24, 2024

Due to their widespread use in engineering, hybrid nanofluids have been the primary focus of mathematical and physical research. Only improvement nanofluids’ variable heat conductivity viscosity has considered so far. Hybrid nanofluid flow across an inclined cylinder many potential uses, including transfer cooling electrical devices, energy storage, refrigerants, automobile industry. Examining effects buoyant force, viscosity, thermal conductivity, mass suction, convective conditions, a magnetic field on stagnation point Al 2 O 3 –Cu/H is our objective this work. In order find solutions boundary-condition flow-describing partial differential equations, we turn them into ordinary equations using similarity transformations. We achieve by employing numerical strategy known as fourth-order Runge–Kutta technique, which incorporates shooting techniques. A graphical representation findings emphasizes influence parameters dynamics. addition, address drag force rate various elements, such Biot parameter, variable, variable. The mixed convection cause velocity profile rise while temperature falls. research’s results elucidate behind contour nanofluids, seen when there increment radiation number. exhibits significant increase 36.87% aiding scenario 2.0 suction applied conjunction with 0.01 nanofluid, compared conventional fluid. opposing flow, 36.96% that Heat increases 43.00% Rd from 0.1 0.5 for both assisting flow.

Language: Английский

Citations

14