Effect of two different fins (longitudinal-tree like) and hybrid nano-particles (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si44.svg"><mml:mrow><mml:mi mathvariant="italic">Mo</mml:mi><mml:msub><mml:mi>S</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mo linebreak="badbreak" linebreakstyle="after">-</mml:mo><mml:mi>T</mml:mi><mml:mi>i</mml:mi><mml:msub><mml:mi>O</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>) on solidification process in triplex latent heat thermal energy stora

Hosseinzadeh, Kh.; Moghaddam, Mohammad Amin Erfani; Asadi, A.; Mogharrebi, A.R.; Jafari, Bahram; Hasani, Mohammadreza; Ganji, D.D.

doi:10.1016/j.aej.2020.12.001

Cited by 143 publications

(10 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They noted the enhanced load capacity achieved with stronger magnetic fields and smaller nanoparticles (higher Brownian motion effect). Hosseinzadeh et al 55 experimented on the effect of two different fins and hybrid nanoparticles on the solidification process in a triplex latent heat thermal energy storage system. Their results showed that while the combined usage of nanoparticles and tree-like fins gives the best result by lowering the solidification time by 78% compared to a bare tube, tree-like fins achieve the best performance taking 1700 s for solidification followed by rectangular fins with 3500 s if nanoparticles are out of reach.…”

Section: Introductionmentioning

confidence: 99%

Unsteady squeezing flow of a magnetized nano-lubricant between parallel disks with Robin boundary conditions

Umavathi

Patil

Mahanthesh

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part N:

View full text Add to dashboard Cite

The aim of the present work is to examine the impact of magnetized nanoparticles (NPs) in enhancement of heat transport in a tribological system subjected to convective type heating (Robin) boundary conditions. The regime examined comprises the squeezing transition of a magnetic (smart) Newtonian nano-lubricant between two analogous disks under an axial magnetism. The lower disk is permeable whereas the upper disk is solid. The mechanisms of haphazard motion of NPs and thermophoresis are simulated. The non-dimensional problem is solved numerically using a finite difference method in the MATLAB bvp4c solver based on Lobotto quadrature, to scrutinize the significance of thermophoresis parameter, squeezing number, Hartmann number, Prandtl number, and Brownian motion parameter on velocity, temperature, nanoparticle concentration, Nusselt number, factor of friction, and Sherwood number distributions. The obtained results for the friction factor are validated against previously published results. It is found that friction factor at the disk increases with intensity in applied magnetic field. The haphazard (Brownian) motion of nanoparticles causes an enhancement in thermal field. Suction and injection are found to induce different effects on transport characteristics depending on the specification of equal or unequal Biot numbers at the disks. The main quantitative outcome is that, unequal Biot numbers produce significant cooling of the regime for both cases of disk suction or injection, indicating that Robin boundary conditions yield substantial deviation from conventional thermal boundary conditions. Higher thermophoretic parameter also elevates temperatures in the regime. The nanoparticles concentration at the disk is boosted with higher values of Brownian motion parameter. The response of temperature is similar in both suction and injection cases; however, this tendency is quite opposite for nanoparticle concentrations. In the core zone, the resistive magnetic body force dominates and this manifests in a significant reduction in velocity, that is damping. The heat build-up in squeeze films (which can lead to corrosion and degradation of surfaces) can be successfully removed with magnetic nanoparticles leading to prolonged serviceability of lubrication systems and the need for less maintenance.

show abstract

Section: Introductionmentioning

confidence: 99%

Unsteady squeezing flow of a magnetized nano-lubricant between parallel disks with Robin boundary conditions

Umavathi

Patil

Mahanthesh

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part N:

View full text Add to dashboard Cite

show abstract

“…Ho et al (2021, 2020) investigated the convective flow of NEPCM suspensions in a divergent mini channel heatsink. The study of the effect of different fins combined with different concentrations of NEPCM on the solidification process in a triplex latent heat thermal energy was presented by (Hosseinzadeh et al , 2021a, 2021b, 2021c).…”

Section: Introductionmentioning

confidence: 99%

“…Alapati (2020) used the lattice Boltzmann method to simulate the natural convection in a concentric hexagonal annulus. Hosseinzadeh et al (2021a, 2021b, 2021c) simulated the heat and flow inside an octagon cavity having an elliptical blocked filled with hybrid nanofluid with water–ethylene glycol contains MoS 2 –TiO 2 hybrid nanoparticles by using the FEM.…”

Section: Introductionmentioning

confidence: 99%

A rotating superellipse inside a hexagonalshaped cavity suspended by nano-encapsulated phase change materials based on the ISPH method

Raizah

Aly

2021

HFF

View full text Add to dashboard Cite

Purpose The purpose of this paper is to perform numerical simulations based on the incompressible smoothed particle hydrodynamics (ISPH) method for thermo-diffusion convection in a hexagonal-shaped cavity saturated by a porous medium and suspended by a nano-encapsulated phase change material (NEPCM). Here, the solid particles are inserted into a phase change material to enhance its thermal performance. Design/methodology/approach Superellipse rotated shapes with variable lengths are embedded inside a hexagonal-shaped cavity. These inner shapes are rotated around their center by a uniform circular velocity and their conditions are positioned at high temperature and concentration. The controlling equations in a non-dimensional form were analyzed by using the ISPH method. At first, the validation of the ISPH results is performed. Afterward, the implications of a fusion temperature, lengths/types of the superellipse shapes, nanoparticles parameter and time parameter on the phase change heat transfer, isotherms, isoconcentration and streamlines were addressed. Findings The achieved simulations indicated that the excess in the length of an inner superellipse shape augments the temperature, concentration and maximum of the streamlines in a hexagonal-shaped cavity. The largest values of mean Nusselt number are attained at the inner rhombus shape with convex (n = 1.5) and the largest values of mean Sherwood number are attained at the inner rectangle shape with rounded corners (n = 4). Originality/value The ISPH method is developed to emulate the influences of the uniform rotation of the novel geometry shapes on heat/mass transport inside a hexagonal-shaped cavity suspended by NEPCM and saturated by porous media.

show abstract

“…Initially, in 1944, Eyring and Powell proposed a Eyring-Powell model which is based on kinetic theory of fluids. Influence of radiation on magnetohydrodynamic (MHD) flow of Eyring-Powell liquid flow due to a stretchable surface is highlighted by Hayat et al 1 Hosseinzadeh et al 2 worked on hybrid nanoparticles in a hexagonal triplex latent heat with fine effects. Impact of heat flux on an Eyring-Powell liquid flow due to shrinking surface is examined by Ara et al 3 Entropy optimization in reactive flow of Eyring-Powell liquid with variable thermal conductivity by a stretchable surface is discussed by Salawu et al 4 Some fruitful researches about nanomaterials in flow of non-Newtonian and Newtonian fluids are highlighted in some of the studies.…”

Section: Introductionmentioning

confidence: 99%

“…Some investigations made by numerous researchers are presented in some of the studies. 2,[19][20][21][22][23][24][25][26] Bioconvection is a phenomenon in which microorganisms are inserted in nanoliquids for nanoparticles movement. It is presumed that nanoparticles have no impact on the spinning direction and motion of microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Investigation of suspended nanoliquid flow of Eyring–Powell fluid with gyrotactic microorganisms and density number

Haq

Khan

et al. 2014

Advances in Mechanical Engineering

View full text Add to dashboard Cite

The aim of the current investigation is to discuss the behavior of mixed convection magnetohydrodynamic flow of Eyring–Powell nanoliquid subjected to gyrotactic microorganisms over a stretchable cylinder. Energy communication is developed through the first law of thermodynamics and deliberated in the manifestation of viscous dissipation. Furthermore, Brownian motion and thermophoresis effects are also considered. Nonlinear system of partial differential equations is altered into ordinary one due to employing transformations. The given systems are then solved through ND-solve technique. Impact of influential variables on velocity, motile microorganism’s temperature, and concentration is deliberated graphically. Skin friction coefficient, mass transfer rate, density number, and Nusselt number are numerically computed versus different influential variables. Velocity and temperature have opposite impact for curvature parameter. For higher estimation of fluid parameter, temperature and velocity fields boost up.

show abstract

Effect of two different fins (longitudinal-tree like) and hybrid nano-particles (MoS2-TiO2) on solidification process in triplex latent heat thermal energy stora

Cited by 143 publications

References 39 publications

Unsteady squeezing flow of a magnetized nano-lubricant between parallel disks with Robin boundary conditions

Unsteady squeezing flow of a magnetized nano-lubricant between parallel disks with Robin boundary conditions

A rotating superellipse inside a hexagonalshaped cavity suspended by nano-encapsulated phase change materials based on the ISPH method

Investigation of suspended nanoliquid flow of Eyring–Powell fluid with gyrotactic microorganisms and density number

Contact Info

Product

Resources

About