A detailed thermohydraulic performance assessment of surface-modified silver nanofluids in turbulent convective heat transfer DOI Creative Commons
Wasurat Bunpheng, Ratchagaraja Dhairiyasamy, Ali Saeed Almuflih

et al.

Journal of Thermal Analysis and Calorimetry, Journal Year: 2024, Volume and Issue: 149(17), P. 10061 - 10079

Published: Aug. 8, 2024

Abstract This study investigates the thermohydraulic performance of surface-modified silver nanofluids in turbulent convective heat transfer applications. The primary objective is to evaluate impact citrate, lipoic acid, and silica surface modifications on coefficients, pressure drops, friction factors under flow conditions. Silver nanoparticles (50 nm) with specified were synthesized dispersed deionized water, ensuring stable nanofluid preparations. Experimental evaluations conducted a smooth brass tube uniform flux, covering Reynolds numbers from 3400 21,800, mass rates 32 78 g s −1 , inlet temperatures 26 °C, 31 36 °C. Key findings indicate that silica-shelled (Ag/S) exhibited significant 35% increase coefficient compared DI while citrate-coated (Ag/C) acid-coated (Ag/L) showed slight decreases 0.2% 2%, respectively. mean Nusselt number for Ag/S also increased by 9%, demonstrating enhanced capabilities. Surface-modified experienced higher drops than base fluid. Ag/C 7.7% drop, Ag/L 12.3% increase, 12.5% correlating an 11.9% rise viscosity. While nanofluids, particularly silica-shelled, can significantly improve performance, associated increases must be carefully balanced specific Future research should explore long-term stability, varying nanoparticle concentrations, more complex geometries optimize formulations targeted

Language: Английский

Comparative Study of Hybrid, Tri-Hybrid and Tetra-Hybrid Nanoparticles in MHD Unsteady Flow with Chemical Reaction, Activation Energy, Soret-Dufour Effect and Sensitivity Analysis over Non-Darcy Porous Stretching Cylinder DOI Creative Commons

M Amudhini,

Poulomi De

Heliyon, Journal Year: 2024, Volume and Issue: 10(15), P. e35731 - e35731

Published: Aug. 1, 2024

Present study investigates influence of Soret-Dufour effects on MHD unsteady flow a tetra-hybrid nanofluid (Al

Language: Английский

Citations

18
Nanofluids for Advanced Applications: A Comprehensive Review on Preparation Methods, Properties, and Environmental Impact DOI Creative Commons
Izzat Razzaq, Xinhua Wang, Ghulam Rasool

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: 10(6), P. 5251 - 5282

Published: Feb. 3, 2025

Nanofluids, an advanced class of heat transfer fluids, have gained significant attention due to their superior thermophysical properties, making them highly effective for various engineering applications. This review explores the impact nanoparticle integration on thermal conductivity, viscosity, and overall performance base highlighting improvements in systems, such as exchangers, electronics cooling, PV/T CSP technologies, geothermal recovery. Key mechanisms nanolayer formation, Brownian motion, aggregation are discussed, with a focus hybrid nanofluids that show enhanced conductivity. The increase viscosity poses trade-off, necessitating careful control properties optimize while reducing energy consumption. Empirical data up 123% convective coefficients, demonstrating tangible benefits efficiency system miniaturization. also considers environmental impacts nanofluid use, potential toxicity challenges sustainable production disposal. Future research directions include developing specific integrating phase change materials, exploring new nanomaterials metal chalcogenides enhance sustainability management systems.

Language: Английский

Citations

2
Thermal and Mass Diffusion in Chemically Reactive, Radiative Hybrid Nanofluid (Cu and TiO2) Flow Over a Rotating Disk DOI Creative Commons
R. L. Meena, Pooja Sharma

International Journal of Thermofluids, Journal Year: 2025, Volume and Issue: unknown, P. 101104 - 101104

Published: Jan. 1, 2025

Language: Английский

Citations

1
Stability study of MHD squeezed nanofluid flow through parallel porous disks with shape factor effect DOI Creative Commons

Abdul Awal,

M. S. Alam,

Rifat Ara Rouf

et al.

International Journal of Thermofluids, Journal Year: 2024, Volume and Issue: 23, P. 100787 - 100787

Published: Aug. 1, 2024

The stability of unsteady two-dimensional magnetohydrodynamic squeezed nanofluid flow with heat transfer through two parallel disks is examined in this paper. lower disk considered porous, and four different-shaped Co, Ni Al2O3 nanoparticles are dispersed the pure fluid. viscous dissipation effect considered, Hamilton Crosser's equation has been for effective thermal conductivity nanofluid. dimensional governing equations converted to a couple non-dimensional ordinary differential equations. Then solved using power series solutions by Hermite- Padé approximation scheme. present result published data compared good concurrence seen. physical numbers such as suction parameter, squeezing number, magnetic Prandtl Eckert number on velocity temperature fields depicted explicitly. skin friction coefficient local rate also measured terms numbers. analysis performed bifurcation curve critical point which predicts that bottom part steady actually viable, while top not stable. value nature parameter predicted found decrease suction/injection increases. These outcomes significant long run where optimization cooling/heating applications expected.

Language: Английский

Citations

4
Editorial: Advances in Heat Transfer Science: Enhanced Techniques for Modern Industrial Applications DOI Creative Commons
Ali Alahmer, Ahmed Al-Manea, Raed Al-Rbaihat

et al.

International Journal of Thermofluids, Journal Year: 2025, Volume and Issue: unknown, P. 101145 - 101145

Published: Feb. 1, 2025

Language: Английский

Citations

0
Entropy Generation and Magnetohydrodynamic Influences on Hybrid Nanofluid Convection in a Staggered Cavity DOI Creative Commons

Yasir Ul Umair Bin Turabi,

Shahzad Munir, Rab Nawaz

et al.

International Journal of Thermofluids, Journal Year: 2025, Volume and Issue: unknown, P. 101204 - 101204

Published: April 1, 2025

Language: Английский

Citations

0
Computational analysis of thermal enhancement and flow dynamics in lid‐driven staggered cavities with uniform/nonuniform temperature walls DOI
Shahzad Munir, Arifur Rahman, Naif Abdulaziz M. Alkuhayli

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 18, 2025

Abstract This research explores mixed convection resulting from simultaneous natural and forced heat exchange in a lid‐driven staggered cavity occupied by Newtonian fluid. All boundaries maintain no‐slip conditions, except the top wall, which moves with velocity. Assumptions are made, including two cases of uniform nonuniform heated left wall maintenance cold walls throughout cavity, disrupts thermal equilibrium. CFD simulations carried out employing finite element (FEM) routine available COMSOL Multiphysics software to elucidate dimensionless problem obtain optimal results desired accuracy. In this study we incorporated detailed examination flow parameters, such as Reynolds number Grashof , Prandtl Richardson on dominant motions designed cavity. Local flux kinetic energy for non‐uniform provide insights into distribution. Increased numbers decrease fluid energy, while higher values enhance buoyancy forces, raising Nusselt number. For source average rises significantly especially indicating strong convective transfer. Lower exhibit minimal increases, showing weaker convection. While also overall slopes lower compared case. High still transfer, but effect is less pronounced, low fluids show sensitivity . Higher accelerate clockwise rotational structure, indicated streamlines.

Language: Английский

Citations

0
Recent advances in employing the Laplace homotopy analysis method to nonlinear fractional models for evolution equations and heat-typed problems DOI Creative Commons

Saed M. Turq,

Rahmatullah Ibrahim Nuruddeen,

Rab Nawaz

et al.

International Journal of Thermofluids, Journal Year: 2024, Volume and Issue: 22, P. 100681 - 100681

Published: May 1, 2024

This study stems from the growing need for effective mathematical tools to tackle nonlinear fractional evolution equations, which find wide applications in physics and engineering. Traditional methods often struggle provide exact closed-form solutions such leading development of novel approaches. In this context, combination homotopy analysis method with Laplace transform presents a promising avenue obtaining these complex equations. By exploring hybrid approach, aims address existing challenges solving models reliable solutions. way, focuses on rendering coupling between approach search class heat-typed fact, equations features some interesting Caputo partial differential that model dissimilar physical processes A generalized recurrent scheme is derived, applicable all members governing class, further analyzed application very test initial-value problems much concern. Eventually, has been found be advantageous, various advantages, including convergence available Thus, advantage current innovative methods, applicability special scheme, successful solution prototype problems, practical advantages method.

Language: Английский

Citations

3
Optimization of silver nanoparticle-enhanced nanofluids for improved thermal management in solar thermal collectors DOI Creative Commons

K. Gunasekaran,

Suresh Perinpanayagam,

V. Gopinath

et al.

Matéria (Rio de Janeiro), Journal Year: 2024, Volume and Issue: 29(3)

Published: Jan. 1, 2024

Language: Английский

Citations

3
Enhancement in Turbulent Convective Heat Transfer Using Silver Nanofluids: Impact of Citrate, Lipoic Acid, and Silica Coatings DOI Creative Commons
Wasurat Bunpheng, Ratchagaraja Dhairiyasamy

ChemEngineering, Journal Year: 2024, Volume and Issue: 8(4), P. 65 - 65

Published: June 26, 2024

This study aims to investigate the thermohydraulic performance of silver nanofluids with different surface modifications (citrate, lipoic acid, and silica) in turbulent convective heat transfer applications. Three were prepared, each modified citrate, or silica coatings. The characterized for stability using zeta potential measurements evaluated a smooth brass tube under flow conditions. experimental setup involved measuring temperature, pressure, rate assess coefficients, pressure drops, friction factors. results compared distilled water as base fluid validated against theoretical models. silica-shelled nanofluid (Ag/S) exhibited significant 35% increase average coefficient water, while citrate-coated (Ag/C) acid-coated (Ag/L) showed slight decreases approximately 0.2% 2%, respectively. Ag/S demonstrated 9% mean Nusselt number, indicating enhanced capabilities. However, all experienced higher drops factors than fluid, showing highest viscosity (11.9%). Surface significantly influence nanofluids. shows most substantial enhancement transfer, making it promising candidate applications requiring efficient thermal management. increased hydraulic costs associated higher-pressure must be carefully managed. Further research is needed optimize these specific industrial applications, considering long-term effects nanoparticle concentrations geometries.

Language: Английский

Citations

2