Mathematical Modeling of Pseudoplastic Nanofluid Natural Convection in a Cavity with a Heat-Generating Unit and Solid Finned Heat Sink DOI Creative Commons

Daria S. Loenko,

Mikhail А. Sheremet

Mathematics, Journal Year: 2023, Volume and Issue: 11(18), P. 3868 - 3868

Published: Sept. 11, 2023

The power-law nanofluid natural convection in a chamber with thermally generating unit and solid ribbed structure has been studied this work. A mixture of carboxymethylcellulose water copper nanoparticles is working fluid illustrating pseudoplastic properties. effective properties the nanoliquid have described by experimental correlations reflecting temperature effect. governing equations formulated on basis conservation laws mass, momentum energy employing non-primitive parameters such as stream function vorticity. defined boundary value problem worked out finite difference technique using an independently developed calculation system. Rayleigh number fixed for analysis (Ra = 105). paper analyzes influence volume fraction, increase which reduces case one edge presence. An rib height shown that its growth leads to weakening convective heat transfer, but at same time, source also decreases. Increasing fins from 1 3 helps reduce average heat-generated element 15%.

Language: Английский

Enhanced conjugate natural convection in a corrugated porous enclosure with Ag-MgO hybrid nanofluid DOI Creative Commons
Zaid Maan H. Al-Dulaimi, Hakim T. Kadhim,

Malik F. Jaffer

et al.

International Journal of Thermofluids, Journal Year: 2024, Volume and Issue: 21, P. 100574 - 100574

Published: Jan. 17, 2024

Understanding the impact of hybrid nanofluids (NF) on natural convection (NC) within complex enclosures can significantly advance efficiency heat transfer (HT) mechanisms. These advancements play a crucial role in various engineering applications, such as thermal systems electronics, energy conversion, and exchangers. This study numerically examined NC taking place sinusoidal corrugated enclosure filled with an Ag-MgO NF. system was heated differentially by vertical solid wall. The right wall is maintained at isothermal high-temperature Th, while left cavity kept low-temperature Tc​. contact porous medium (PM) saturated cavity's In contrast, top bottom horizontal walls are adiabatic. governing equations were solved employing Galerkin weighted residual finite elements approach. domain modeled Darcy-Brinkman formulation. parameters being studied encompass Darcy number (10−5 ≤ Da 10−2), Rayleigh (103 Ra 106), nanoparticle volume fraction (0 ϕ 0.04), amplitude waviness (0.05 A 0.2), undulations (1 N 4). results highlighted that introduction nanoparticles into pure fluid enhances HT rate across parameter spectrum. highest average Nusselt (Nuav) attained = 106, 10−2, 0.2 4. findings current have practical implications for industrial particularly cooling electronic devices.

Language: Английский

Citations

32
Numerical simulations of entropy generation and thermal fluid flow in a wavy enclosure: A NEWTON-PARDISO solver-based study DOI
Afraz Hussain Majeed, Rashid Mahmood, Dong Liu

et al.

International Communications in Heat and Mass Transfer, Journal Year: 2025, Volume and Issue: 162, P. 108569 - 108569

Published: Jan. 6, 2025

Language: Английский

Citations

6
The impact of a chemical reaction on the heat and mass transfer mechanisms in a dissipative and radiative nanofluid flow over a nonlinear stretching sheet DOI Creative Commons
W. Abbas, Ahmed M. Megahed, Eman Fares

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: April 2, 2024

This paper presents a numerical investigation of the flow non-Newtonian tangent hyperbolic nanofluid over nonlinearly stretched surface, taking into account factors such as thermal radiation, prescribed surface temperature, and chemical reaction mechanism. Furthermore, analysis includes consideration both viscous dissipation influence magnetic field within Darcy porous medium. A mathematical framework for addressing issue, rooted in principles conserving momentum, energy, mass. The MATHEMATICA tools were employed to apply shooting technique order solve modeled equations describing velocity, concentration fields proposed physical system. Graphs are used illustrate how certain key parameters affect profiles concentration, temperature. Data tables utilized display information pertaining local Nusselt number, Sherwood skin friction coefficient. present results have been confirmed through comparison with previously published findings. research holds significant importance it focuses on extensive utilization nanofluids cooling electronic components that produce substantial heat during their operation. observed pattern indicates Weisbsenberg parameter, power law index increase, there is reduction boundary layer thickness. Conversely, instances temperature distributions, an escalation these leads expansion

Language: Английский

Citations

15
Thermodynamic Analysis and Entropy Generation of Electroosmotic Tetra-Hybrid Nanoparticle Transport in Complex Biological Transport DOI Creative Commons
Nahid Fatima, Mohamed Kallel, Nouman Ijaz

et al.

Results in Engineering, Journal Year: 2025, Volume and Issue: 25, P. 104308 - 104308

Published: Feb. 12, 2025

Language: Английский

Citations

1
Heat transfer enhancement of the air-cooled engine fins through geometrical and material analysis: A review DOI
Shivangi Sachar, Yusuf Parvez,

Tanya Khurana

et al.

Materials Today Proceedings, Journal Year: 2023, Volume and Issue: unknown

Published: April 1, 2023

Language: Английский

Citations

17
Modeling and simulation of mixed convection flow with viscous dissipation in a lid-driven hexagonal cavity using finite element method DOI Creative Commons
Ayele Tulu, Mohammed Hirpho, Muhammad Sohail

et al.

International Journal of Thermofluids, Journal Year: 2024, Volume and Issue: 22, P. 100702 - 100702

Published: May 1, 2024

The computational analysis of mixed convection flow with viscous dissipative heat transfer inside a hexagonal enclosure cavity is done in this study using the finite element method. upper side kept cold and moves from left to right at constant velocity, while lower thermally motivated by fluctuating sinusoidal temperature. non-parallel sides hexagon are maintained adiabatic. governing equations converted into dimensionless form then computed help Comsol-Multiphysics software. cavity's internal transport processes examined across wide parametric range such as Reynolds number (10≤Re≤1000), Eckert (0≤Ec≤50), Richardson (0.1≤Ri≤10). It was found that governed motion lid buoyancy force produced temperature differential cavity. effects number, on thermal distributions, local rate examined. findings show intensity value improved 1.85 12.22 increased Ec=0 50. Physically, greater Ec generates more result work against fluid stress, it improves distribution outputs also reveal heated wall reports highest values average Nusselt numbers when zero, they tend decrease increases. cold-moving wall, other hand, opposite effect. Furthermore, dominates moving whereas, cavity, conduction plays significant role transfer.

Language: Английский

Citations

8
Predictive modeling through physics‐informed neural networks for analyzing the thermal distribution in the partially wetted wavy fin DOI

K. Karthik,

G. Sowmya,

Naman Sharma

et al.

ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Journal Year: 2024, Volume and Issue: 104(8)

Published: July 19, 2024

Abstract The heat transport analysis and thermal distribution in partially wetted wavy profiled fin are investigated the current study. Convective, radiative effects temperature‐dependent conductivity all considered this transfer analysis. dimensional governing temperature equations of extended surface nondimensionalized utilizing appropriate dimensionless terms. Further, resulting nondimensional solved by employing Physics‐Informed Neural Network (PINN). values obtained numerical procedure Runge Kutta Fehlberg's fourth‐fifth (RKF‐45) order scheme compared with PINN outcomes. results portrayed aid tables, significance several constraints on wet is exhibited using graphical illustrations. A rise parameter enhances fin's profile. diminishes as convective‐conductive parameter, ratio radiation‐conduction upsurges.

Language: Английский

Citations

8
Chemically reactive aspects of stagnation-point boundary layer flow of second-grade nanofluid over an exponentially stretching surface DOI
Muhammad Naveed Khan, Aamir Abbas Khan, Aisha M. Alqahtani

et al.

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

Published: Feb. 26, 2024

Assessing the stagnation-point flow of a second-grade nanofluid with an induced magnetic field and effects Joule heating toward exponentially extending surface is leading goal current effort. The modeling thermal solute energy equations has taken into account nonlinear radiation as well impact activation energy. boundary sheet subjected to zero-mass flux slip conditions. simulated are converted coupled ODEs (ordinary differential equations) using similarity variables. BVP4C MATLAB technique used numerically resolve these ODEs. Graphs tabular data perform physical debate. importance greater estimation Prandtl number parameter emphasized in order obtain better profile. Additionally, estimations second-order fluid increase rates friction heat transmission.

Language: Английский

Citations

6
Influence of Joule Heating and Nonlinear Thermal Radiation on the Electrical Conductivity of Second‐Grade Hybrid Nanofluid Flow Over a Stretching Cylinder DOI Creative Commons
Eshetu Haile Gorfie, Asfaw Tsegaye Moltot,

Gurju Awgichew Zergaw

et al.

Engineering Reports, Journal Year: 2025, Volume and Issue: 7(4)

Published: April 1, 2025

ABSTRACT This study examines the heat and mass transfer rates of an electrically conducting second‐grade hybrid nanofluid over a stretching cylinder, focusing on effects Joule heating, nonuniform sources, nonlinear thermal radiation. The nanofluid, composed silver nanoparticles aluminum oxide in ethylene glycol, enhances conductivity efficiency fluid flows, making it suitable for applications exchangers, aerospace, renewable energy, electronic cooling systems. novelty research lies comparative analysis flow characteristics, rates, influence key phenomena such as radiation, chemical reactions, Soret number, thermophoresis, Brownian motion velocity temperature profiles ‐ethylene glycol nanofluids. Using similarity transformation, governing partial differential equations are reduced to ordinary solved numerically using MATLAB's bvp4c package. Results validated against existing data, showing good agreement. Graphical representations various physical parameters velocity, temperature, concentration presented, along with their skin friction coefficient, local Nusselt Sherwood number. findings show that curvature increase boundary layer thickness momentum, concentration. Enhanced radiation improves transfer, particularly high‐temperature conditions. Increased internal sources elevate higher nanoparticle concentrations improve resulting In conclusion, nanofluids outperform mono‐nanofluids efficiency, offering better performance engineering applications. apply management, cooling, energy storage, manufacturing, biomedical treatments, optimization power generation aerospace engineering.

Language: Английский

Citations

0
Numerical Simulation of Natural Convection in a Chamfered Square Cavity with Fe3O4-Water Nanofluid and Magnetic Excitation DOI Open Access
Rached Nciri,

Ala Eldin A. Awouda,

Amir Abubaker Musa

et al.

Engineering Technology & Applied Science Research, Journal Year: 2025, Volume and Issue: 15(1), P. 20523 - 20528

Published: Feb. 2, 2025

This study delves into the numerical exploration of MagnetoHydroDynamic (MHD) characteristics an Fe3O4-Water nanofluid contained within a chamfered square enclosure under influence external magnetic field. The enclosure, characterized by distinct hot and cold imposed temperatures on its side walls, features both straight sections. orientation field lines was manipulated varying angular placement source. computational framework for dynamics is mathematically formalized through dimensionless formulation Navier-Stokes equations derived from their dimensional counterparts. A comprehensive analysis conducted employing Finite Element (FE) method, a. interaction between Hartmann number source analyzed, with specific focus isotherms, temperature profiles, velocity magnitude distributions. results were thoroughly investigated extensively discussed.

Language: Английский

Citations

0