Analysis of Fully Developed Opposing Mixed Convection Flow in an Inclined Channel Filled by a Nanofluid

You, Xue-yi; Xu, Hang; Pop, Ioan

doi:10.1115/1.4028564

Cited by 10 publications

(10 citation statements)

References 16 publications

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“…Differentiating Equation ( 7) with Y and Equation (8) with X respectively, and taking into account (12), then equating them, we obtain…”

Section: Properties Nanofluidmentioning

confidence: 99%

“…Cimpean [ 11 ] studied the steady fully developed mixed convection flow of a nanofluid in a channel filled with a porous medium. You et al [ 12 ] presented analysis of fully developed opposing mixed convection flow in an inclined channel filled by a nanofluid. Goyal et al [ 13 ] examined numerically natural convective boundary layer flow of a nanofluid past a heated inclined plate in the presence of magnetic field and found that the thermal boundary layer thickness increased with strengthening the value of inclination angle parameter.…”

Section: Introductionmentioning

confidence: 99%

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Fully Developed Opposing Mixed Convection Flow in the Inclined Channel Filled with a Hybrid Nanofluid

You

2021

Nanomaterials

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This paper studies the convective heat transfer of a hybrid nanofluid in the inclined channel, whose walls are both heated by the uniform heat flux. The governing ordinary differential equations are made nondimensional and solved analytically, in which explicit distributions of velocity, temperature and pressure are obtained. The effects of flow reversal, wall skin friction and Nusselt number with the hybrid nanofluid depend on the nanoparticle volume fractions and pressure parameters. The obtained results indicate that the nanoparticle volume fractions play a key role in delaying the occurrence of the flow reversal. The hybrid nanofluids hold more delayed range than conventional nanofluids, which is about 2.5 times that of nanofluids. The calculations have been compared with the base fluid, nanofluid and two kinds of hybrid models (type II and type III). The hybrid model of type III is useful and simplified in that it omits the nonlinear terms due to the interaction of different nanoparticle volumetric fractions, with the relative error less than 3%. More results are discussed in the results section below.

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“…Differentiating Equation ( 7) with Y and Equation (8) with X respectively, and taking into account (12), then equating them, we obtain…”

Section: Properties Nanofluidmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fully Developed Opposing Mixed Convection Flow in the Inclined Channel Filled with a Hybrid Nanofluid

You

2021

Nanomaterials

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“…Of fundamental importance in engineering and its application, the Nusselt number, skin friction, volume flow rate, and heat carried out by the fluid can be expressed, respectively, as:

N u = \frac{2 q_{w} L}{k_{f} Δ T}; C_{f} = \frac{τ_{w}}{ρ_{f} U_{0}^{2}}; M_{f} = \int_{0}^{L} u false(y false) d y; Q_{f} = \int_{0}^{L} u false(y false) T false(y false) d y

where

q_{w} = \pm k_{n f} {\frac{d T}{d y}∣}_{y = 0, L}

is the wall heat flux and

τ_{w} = \pm μ_{n f} {\frac{d u}{d y}∣}_{y = 0, L}

is the wall shear stress. Thus, using Equation and the wall heat flux and wall shear stress, the Nusselt number, skin friction, volume flow rate, and heat carried out by the fluid can be defined as:

N u = \pm 2 A_{3} {\frac{d θ}{d Y} ∣}_{Y = 0, 1}; Re C_{f} = \pm \frac{A_{1}}{2} {\frac{d U}{d Y} ∣}_{Y = 0, 1}; M_{f} = \int_{0}^{1} U d Y; Q_{f} = \int_{0}^{1} U θ d Y .

…”

Section: Mathematical Formulationmentioning

confidence: 99%

Second law analysis for mixed convection nanofluid flow in an inclined channel with convectively heated walls

Tlau

Ontela

2019

Heat Trans

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In this study, entropy generation analysis for Cu-water nanofluid mixed convective flow in an inclined channel occupied with a saturated porous media with Navier slip and convective boundary conditions is explored. The governing equations composed of equations of velocity and temperature are nondimensionalized and then solved utilizing the technique of homotopy analysis. Temperature and velocity profile expressions are acquired, which are then used to calculate the entropy produced in the scheme. The impacts of the corresponding fluid parameters are addressed in-depth on velocity, temperature, entropy generation, Bejan number,Nusselt number, skin friction, volume flow rate, and heat carried out by the fluid for 1% nanofluid concentration. Entropy has been observed to be minimal in all cases just above the channel center and maximum at the channel's bottom wall. Fluid friction-generated entropy has been discovered to have a higher influence on entropy generation. We also provide a comparative study with existing literature to validate our current results. K E Y W O R D Sconvective boundary, entropy, inclined channel, mixed convection, nanofluid, Navier slip

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“…The result of the study highlights that the Knudsen number causes a reduction in velocity and rate of heat transfer whereas the angle of inclination maximizes the friction coefficient and Nusselt number. You et al 17 involved themselves in examining the flow of TiO 2 –H 2 O nanoliquid. The result tells that the volume fraction of nanoparticles significantly affects the declining nature of flow reversal.…”

Section: Introductionmentioning

confidence: 99%

Scrutinization of thermodynamic second law for the steady flow of couple stress nanofluid in an inclined microchannel by varying thermal conductivity

et al. 2022

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This study comprises the flow of Ti6Al4N nanoparticle alloy allowed to flow within the microchannel kept at a certain angle. Engine oil is the base fluid in which nanodimensional particles are immersed. The flow is caused by the influence of linear and exponential heat sources. The microchannel is a permeable media with the suction/injection at the microchannel extremes. During the flow, the impact of the microstructure of these particles is concerned, thus reporting the rotational interaction amidst the particles. The obtained nonlinear equations are solved using the effective numerical method, namely, finite difference code improved by using the Lobatto IIIA formula and the findings are discussed using the graphs. The results attained claim that linear and exponential space‐dependent heat source parameter has augmented the thermal profile. Also, consideration of the couple stress of the fluid is known to retard the flow.

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Analysis of Fully Developed Opposing Mixed Convection Flow in an Inclined Channel Filled by a Nanofluid

Cited by 10 publications

References 16 publications

Fully Developed Opposing Mixed Convection Flow in the Inclined Channel Filled with a Hybrid Nanofluid

Fully Developed Opposing Mixed Convection Flow in the Inclined Channel Filled with a Hybrid Nanofluid

Second law analysis for mixed convection nanofluid flow in an inclined channel with convectively heated walls

Scrutinization of thermodynamic second law for the steady flow of couple stress nanofluid in an inclined microchannel by varying thermal conductivity

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