Bioconvection entropy optimized flow of Reiner-Rivlin nanoliquid with motile microorganisms

Alexandria Engineering Journal, Journal Year: 2023, Volume and Issue: 79, P. 81 - 92

Published: Aug. 8, 2023

Present work is concerned with hydromagnetic bioconvective chemically reactive flow of Reiner-Rivlin nanoliquid. Analysis constructed for entropy generation. Thermal relation consists Joule heating, radiation and dissipation. Soret effect examined. Nonlinear governing systems after adequate transformations are solved by ND-solve technique. Graphical analysis velocity, microorganism field, rate, thermal field concentration analyzed. description coefficient skin friction, density number, heat transport rate gradient studied. Entropy increase detected higher magnetic parameter while reverse trend holds velocity. Clearly temperature augments against thermophoresis radiation. Radiation intensifies rate. Similar impact drag force noticed. Concentration mass rise number. Brownian motion variation results in decays. Large Peclet number leads to decrease whereas it the

Language: Английский

---

Numerical heat transfer of non-similar ternary hybrid nanofluid flow over linearly stretching surface

Numerical Heat Transfer Part A Applications, Journal Year: 2023, Volume and Issue: unknown, P. 1 - 15

Published: Sept. 5, 2023

AbstractThe primary objective of this research is to construct a 2D mathematical model understand the heat transfer phenomena in ternary hybrid nanofluid across stretched surface. We endorsed viscous dissipation formulations energy equations and radiation impacts may also be precisely handled by using Rosseland approximation. Nanoparticles their effects are considered including Al2O3, MgO TiO2. The used made nondimensional through non-similarity transformation. In addition, local approach employed convert non-similar partial differential into ordinary equations. These can subsequently solved bvp4c MATLAB tool. Key factors have been thoroughly mapped out graphical form for easy comprehension. flow regime, increasing nanoparticle concentration, magnetic number, Eckert number lowers transmission raises nanofluid's temperature profile. effective skin friction coefficient Nusselt tabulated concerning aforementioned important factors.Keywords: Local non-similarity: Bvp4cternary nanofluidWilliamson fluid

Language: Английский

---

Computational examination of heat and mass transfer of nanofluid flow across an inclined cylinder with endothermic/exothermic chemical reaction

Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 57, P. 104336 - 104336

Published: April 1, 2024

The consequence of thermal performance and mass distribution endothermic/exothermic chemical reaction pollutant concentration on the nanoliquid stream via cylinder/plate in presence permeable media is explored present study. advancement efficient waste disposal pollution prevention techniques might result from studies fluid flow dispersion contaminants cylinders plates. Further, TiO2 nanoparticle offers improved conductivity, helps wide range technological industrial applications. governing partial differential equations (PDEs) problem are modelled converted to ordinary (ODEs) utilizing similarity variables. resultant ODEs numerically solved using Runge Kutta Fehlberg's fourth-fifth order (RKF-45) scheme. influence various non-dimensional parameters velocity, thermal, profiles illustrated with a graphical representation. comparison between cylinder plate geometry also displayed graphs. novel outcomes show that augmentation parameter reduces profile endothermic case elevates exothermic case. Elevating local external source leads rise profile. It around 10%–12% Cf, 4%–6% Nu 8%–12% Sh observed than plate. transfer rate for values solid fraction activation energy. In all modes, performs better geometry.

Language: Английский

---

Stagnation point of the triple nanoparticle nanofluid flow through the spinning sphere with radiation absorption

Pramana, Journal Year: 2024, Volume and Issue: 98(3)

Published: July 11, 2024

Language: Английский

---

Heat transfer analysis of ternary hybrid Williamson nanofluids with gyrotactic microorganisms across stretching surfaces: Local non-similarity method

Numerical Heat Transfer Part A Applications, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 22

Published: April 15, 2024

Managing and controlling energy amidst rapid industrial technological advancements pose significant challenges. Enhanced heat transfer processes, like free convection in solar panels nuclear power plants, offer potential to reduce consumption improve system efficiency. Understanding elements such as magnetic fields, thermal radiation, nanoparticle morphology can optimize fluid dynamics across various domains including energy, aerospace, power. This study aims develop a two-dimensional Williamson model with ternary hybrid nanofluids gyrotactic microorganisms deepen our understanding of transfer. Methodological enhancements include integrating viscous dissipation formulations adopting the Rosseland approximation address radiation effects accurately. By leveraging non-similarity transformations, equations are rendered nondimensional for efficient numerical solutions using MAT LAB. Graphical overviews tables aid comprehending key factors practical applications engineering analyses.

Language: Английский

---

Effect of an inclined magnetic field on unsteady mixed convective stagnation point flow over a permeable stretching sheet with radiative heat transfer

Physica Scripta, Journal Year: 2023, Volume and Issue: 98(9), P. 095255 - 095255

Published: Aug. 18, 2023

Abstract In this study, we analyzed the time-dependent, 2D, inclined magnetohydrodynamics mixed convection stagnating point flow of nanoparticle toward a permeable stretchable surface with radiative heat effect. Four different types water-based nanomaterials, namely titanium dioxide T i O 2 , copper $\left(Cu\right),$?> C u aluminum oxide $\left(A{l}_{2}{O}_{3}\right),$?> A l 3 and $\left(CuO\right)$?> are in investigation. Numerous engineering disciplines, including energy systems, material processing, thermal management, environmental engineering, can benefit greatly from research convection, MHD, nanofluids. The boundary layer representations dominating partial differential equations PDEs converted into strong nonlinear ordinary ODEs utilizing similarities approach. computed numerically employing 4th order Runge–Kutta methodology-based shooting scheme. Few special situations, remarkable alignment is determined between present study outcomes obtained existing research. impact numerous pertinent variables on prominent quantities such as velocity, temperature concentration distributions, drag friction coefficient transport demonstrated graphically. It noticed that velocity curve decrease volume factor increases. Moreover, it higher values diminishes distributions.

Language: Английский

---

Numerical simulation of variable density and magnetohydrodynamics effects on heat generating and dissipating Williamson Sakiadis flow in a porous space: Impact of solar radiation and Joule heating

Heliyon, Journal Year: 2023, Volume and Issue: 9(11), P. e21726 - e21726

Published: Oct. 28, 2023

This study is confined to the numerical evaluation of variable density and magnetohydrodynamics influence on Williamson Sakiadis flow in a porous space. In this study, Joule heating, dissipation, heat generation effect optically dense gray fluid encountered. The inclined moving surface as geometry considered induce flow. A proposed phenomenon given mathematical structure partial differential equations form. These are then made dimensionless using variables. obtained model changed ordinary via stream function formulation. set transformed has been solved with bvp4c solver. fallout velocity field, temperature skin friction, transfer rate illustrated graphs tables parametric variations. Conclusion drawn that mounting values variation parameter confirm reduction field augmentation fluid. When enhances, both rising correspondingly. Growing magnitudes magnetic number, radiation parameter, generation, Eckert number rise medium weakens velocity. Skin friction reducing increased. present solutions compared those have already published order validate current model. comparison leads conclusion two outcomes excellent agreement, endorsing veracity answers.

Language: Английский

---

The Effects of Reduced Gravity and Radiative Heat Transfer on the Magnetohydrodynamic Flow Past a Non-Rotating Stationary Sphere Surrounded by a Porous Medium

Symmetry, Journal Year: 2023, Volume and Issue: 15(4), P. 806 - 806

Published: March 26, 2023

In the present study, effects of reduced gravity and solar radiation on magnetohydrodynamics (MHD) fluid flow heat transfer past a solid stationary sphere embedded in porous medium are investigated. A model describing considered configuration is put dimensionless form using appropriate variables then transformed to primitive for smooth algorithm computing tool. solved by employing finite difference method. Solutions interest, such as velocity distribution temperature field, along with their gradients, depicted graphs tables. The main goal paper study physical impact around surface inserted presence an applied magnetic field radiation. governing parameters, which parameter, Prandtl number, discussed physically interpreted. displayed solutions indicate that rises parameters but decreases augmenting parameter. It deduced from presented results becomes lower increasing values parameter but, other hand, it higher medium, at all positions sphere. comparison between already published performed check validity proposed numerical model.

Language: Английский

---

KHA model comprising MoS₄ and CoFe₂O₃ in engine oil invoking non-similar Darcy–Forchheimer flow with entropy and Cattaneo–Christov heat flux

Nanoscale Advances, Journal Year: 2023, Volume and Issue: 5(22), P. 6135 - 6147

Published: Jan. 1, 2023

Objective: Nanoliquid flows are widely utilized in industrial, petroleum, engineering, and pharmaceutical applications including electric cooling, drug delivery, nuclear reactor solar collectors, heat exchangers, magnetohydrodynamic power generators, aerospace, porous media, thermal storage systems, many others. Darcy-Forchheimer magnetized hybrid nanoliquid subjected to a stretchable cylinder was addressed, the Cattaneo-Christov flux analysis considered. Herein, disulfido (dithioxo) molybdenum (MoS4) cobalt ferrite (CoFe2O4) were considered as nanoparticles, engine oil conventional liquid. The relationship of generation radiation discussed, influence entropy rate addressed. Methodology: Governing expressions transformed into dimensionless forms. Simulation by ND-solve technique implemented. Conclusions: Features for rate, liquid flow, temperature against emerging variables (MoS4/engine oil) (MoS4 + CoFe2O4/engine explored. numerical results coefficient skin friction transport examined. Reduction velocity clearly occurred through magnetic field, whereas reverse impact held rate. field curvature parameter enhanced. A decrease flow higher porosity variables. An enhancement witnessed parameters. Higher relaxation time resulted

Language: Английский

---

Optimization of heat transfer in bi-directional flow of sodium alginate-based ternary hybrid nanofluid over an extending heated surface with velocity slip conditions

Journal of Thermal Analysis and Calorimetry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 11, 2025

Language: Английский

---