The Role of Quadratic-Linearly Radiating Heat Source with Carreau Nanofluid and Exponential Space-Dependent Past a Cone and a Wedge: A Medical Engineering Application and Renewable Energy

Journal of Computational Biophysics and Chemistry, Год журнала: 2023, Номер 22(08), С. 997 - 1011

Опубликована: Авг. 12, 2023

A mathematical analysis for a steady, incompressible, laminar Carreau nanofluid flow over porous cone and wedge is considered. The novelty of this research work to scrutinize an exponential space-dependent Cattaneo–Christov heat flux quadratic Rosseland approximation effects. Two-phase model, i.e., Brownian motion, thermophoretic effects are included. This study also employs non-linear thermal radiation convective surface boundary conditions investigate transport phenomena. layer equations derived using the standard approximations. By applying similarity transformations, managing set partial differential (PDEs) becomes system connected ordinary (ODEs). resultant ODEs solved numerically utilizing numerical method, particularly bvp4c function in MATLAB. significances fluid motion visualized by sketching several flow’s relevant parameters graphic outputs. wide range thermophysical variables on liquid properties including velocity, temperature, concentration, skin-friction, Nusselt number, Sherwood number investigated discussed. study’s findings compared previously announced results within limited range, where strong validation was seen. demonstrate that opposite mechanism observed with repercussion Weissenberg (We) velocity profile enhancement We increases momentum while it reduces concentration layer. outcomes could be applied cooling equipment, electronics, various industrial units.

Язык: Английский

---

Impact of solid–liquid interfacial layer in the nanofluid flow between stretching stationary disk and a rotating cone

Tribology International, Год журнала: 2023, Номер 192, С. 109187 - 109187

Опубликована: Дек. 12, 2023

Язык: Английский

---

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, Год журнала: 2024, Номер unknown

Опубликована: Апрель 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.

Язык: Английский

---

Electroosmotic MHD ternary hybrid Jeffery nanofluid flow through a ciliated vertical channel with gyrotactic microorganisms: Entropy generation optimization

Heliyon, Год журнала: 2024, Номер 10(3), С. e25102 - e25102

Опубликована: Янв. 25, 2024

In this study, the computational analysis of entropy generation optimization for synthetic cilia regulated ternary hybrid Jeffery nanofluid (Ag–Au–TiO2/PVA) flow through a peristaltic vertical channel with swimming motile Gyrotactic microorganisms is investigated. Understanding intricate interaction multiple physical phenomena in biomedical applications essential optimizing and advancing microfluidic systems. The characteristics are explored electroosmotic MHD fluid presence thermophoresis Brownian motion, viscous dissipation, Ohmic heating chemical reaction. Using appropriate transformations, set ordinary differential equations created from governing partial equations. resulting ODEs numerically solved using shooting technique BVP5C MATLAB after applying long-wavelength low Reynolds number approximation. velocity, temperature, concentration, electroosmosis, microorganism density profiles analyzed graphically different emerging parameters. Graphical investigation engineering interest quantities like heat transfer rate, mass skin friction coefficient, also presented. It observed that rate increases increasing thermophoretic parameter, while reverse effect noted motion Schmidt number, reaction number. outcomes present study can be pertinent studying Cilia properties respiratory tract, reproductive system, brain ventricles.

Язык: Английский

---

Unsteady magnetohydrodynamic tri-hybrid nanofluid flow past a moving wedge with viscous dissipation and Joule heating

Physics of Fluids, Год журнала: 2024, Номер 36(6)

Опубликована: Июнь 1, 2024

This study aims to boost thermal convection through careful selection and adjustment of nanomaterial volumes, focusing on the unsteady magnetohydrodynamic flow past a moving wedge with viscous dissipation Ohmic heating in ternary nanofluid alumina (Al2O3), copper oxide (CuO), (Cu) water. Employing mathematical modeling numerical analysis via MATLAB's BVP4C, it explores how discharge concentration influences characteristics identifies critical conditions for single or dual solutions. Key parameters such as motion parameters, Eckert number, magnetic strength, nanoparticle volume ratios were scrutinized their impact fluid dynamics heat transfer. Results show enhanced convective transfer increased hybridity fraction, alongside suction/injection parameter (S), unsteadiness (A), number (Ec), (M), albeit decreasing angle adjustments. Stability revealed stability initial solution vs instability secondary. Introducing novel time variable, τ=cAt(1−ct), this research demonstrates that at λ=−4.7(a leftward wedge) 0.04 hybrid nanofluids significantly outperform mono nanofluid, achieving efficiency gains 25.6% 7.5%, respectively. foundation underscores potential optimized mixtures advanced applications.

Язык: Английский

---

Influences of blowing and internal heating processes on steady MHD mixed convective boundary layer flows of radiating titanium dioxide‐ethylene glycol nanofluids

ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Год журнала: 2024, Номер 104(4)

Опубликована: Фев. 10, 2024

Abstract The present analysis intends predominantly to explore the multiple behaviors of radiating ethylene glycol‐based titanium dioxide nanofluids during their steady boundary layer flows near a vertical permeable surface under prominent impacts uniform blowing and nonuniform internal heating processes. By incorporating dynamical contribution Lorentz buoyancy forces in momentum equation adopting single‐phase nanofluid approach along with constitutive equations second‐grade rheological model Corcione's correlations, governing partial differential appropriate conditions are derived mathematically based on theory other admissible physical approximations. After several simplifications, aforesaid formulation is converted into set ordinary realistic conditions, which solved thereafter numerically using GDQ's‐NT method. Moreover, it demonstrated that strengthening processes has boosting effect velocity temperature profiles. However, influencing parameters show dissimilar thermal trends. Furthermore, witnessed mixed convective heat transfer, viscoelasticity trend nanofluidic medium, nanoparticles’ loading exhibit an enhancing impression transfer rate.

Язык: Английский

---

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, Год журнала: 2024, Номер 55, С. 104121 - 104121

Опубликована: Фев. 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.

Язык: Английский

---

Thermally radiative bioconvective nanofluid flow on a wavy cylinder with buongiorno model: A sensitivity analysis using response surface methodology

Case Studies in Thermal Engineering, Год журнала: 2024, Номер 55, С. 104178 - 104178

Опубликована: Фев. 27, 2024

The significant impact of nanotechnology has turned the ordinary into excellent in ever-changing environment science and technology. Recent times have seen a dramatic transformation as advances technology continue to push us domain nanoscale innovation. Fluid flow over range geometries is involved physical processes heat mass transfer subject constraints. These phase change systems are also converted latest by improving thermal conductivity fluids through mixing nanoparticles base fluid. This approach makes things finer quicker from perspective efficiency structure. It many applications various domains especially nano-medicines, chemotherapy, microprocessors, refrigeration, biotechnology. In this work, nanofluid wavy cylinder considered existence radiation, activation energy, motile microorganisms. model computationally solved developing system PDE's (partial differential equations) then transformed ODE's (ordinary smooth implementation similarity variables. resultant numerically treated bvp4c built package MATLAB get required results. results discussed graphically visualized analysis section. For validation results, statistical implemented on acquired shows fitted model, contour plots, surface residual streamlines parameters their impacts model. involving quantities velocity, thermal, concentration, microorganism's density profiles discussed. From it noted that velocity profile increases increasing counts mixed convection. Thermal distribution enhanced due boosting values thermophoresis Brownian motion. concentration increased magnetic field strength. larger peclet number minimize Skin friction coefficient around 28% transport going be 36% variance our summary fitness

Язык: Английский

---

Significance of tri-hybrid nanoparticles in thermal management subject to magnetized squeezing flow of a Boger-micropolar nanofluid between concentring disks

Journal of Molecular Liquids, Год журнала: 2024, Номер 397, С. 124141 - 124141

Опубликована: Фев. 2, 2024

Язык: Английский

---

A passive modeling strategy of steady MHD reacting flows for convectively heated shear-thinning/shear-thickening nanofluids over a horizontal elongating flat surface via Wakif’s-Buongiorno approach

Numerical Heat Transfer Part A Applications, Год журнала: 2024, Номер unknown, С. 1 - 24

Опубликована: Фев. 9, 2024

In contrast to the previous traditional investigations, present scrutinization intends principally provide a proper differential formulation examine realistically shear-thinning and shear-thickening aspects of convectively heated viscoelastic nanofluids during their steady two-dimensional boundary layer flows over stretchable horizontal surface. Besides, third-order chemical reaction process can take place within nanofluidic medium in presence an external magnetic field source. From theoretical point view, constitutive rheological laws Carreau's model have connected appropriately with conservation equations Wakif's-Buongiorno develop simplified governing partial based on theory. By adopting feasible mathematical transformations invoking passive nanoparticles' control strategy, leading dimensionless are derived form coupled nonlinear structure ordinary along conditions, whose approximate solutions computed accurately via Runge's-Kutta-Fehlberg method. this respect, several findings presented thereafter graphically tabularly different physical scenarios. As foremost results, it is found that tendencies reciprocal influences axial velocity, nanofluid temperature, molar concentration distribution, skin friction coefficient, Nusselt's number, surface nanoparticles when Weissenberg's number gets raised. Whist, similar impression witnessed for these propensities augmenting other operating parameters independently.

Язык: Английский

---