Effect of temperature jump on forced convective transport of nanofluids in the continuum flow and slip flow regimes

Yang, Chen; Wang, Qinglian; Nakayama, A.; Qiu, Ting

doi:10.1016/j.ces.2015.07.018

Cited by 21 publications

(9 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hedayati and Domairry [25,26] investigated the effects of nanoparticle migration on titania/water nanofluids in horizontal and vertical channels. The popularity of nanoparticle migration modeling can be gauged from the numerous published literatures such as [27][28][29].…”

Section: Nanoparticle Migration Effectsmentioning

confidence: 99%

Different modes of nanoparticle migration at mixed convection of Al2O3–water nanofluid inside a vertical microannulus in the presence of heat generation/absorption

Moshizi

Malvandi

2016

J Therm Anal Calorim

View full text Add to dashboard Cite

Intensity and direction of nanoparticle migration are able to tune thermophysical properties of nanofluids to improve the thermal performance of heat exchange equipments. The intensity strongly depends on nanoparticle diameter and cannot be actively controlled while different directions of nanoparticle migration are achieved with asymmetric heating. In the current study, the mixed convective heat transfer of Al 2 O 3 -water nanofluid inside a vertical microannulus is investigated theoretically considering different modes of nanoparticle migration. The model employed for the nanoparticle-fluid mixture is able to fully account for the effects of nanoparticle slip velocity relative to the base fluid originating from the thermophoresis (nanoparticle slip velocity due to temperature gradient) and Brownian motion (nanoparticle slip velocity due to concentration gradient). To consider surface roughness in the microannulus, Navier's wall slip condition is employed at the solid-fluid interface. It is revealed that the asymmetric heating at the walls alters the orientation of nanoparticle migration and deforms the symmetry of the flow field. In addition, despite temperature-dependent buoyancy forces, concentration-dependent buoyancy forces have considerable effects on the flow fields and nanoparticle migration.

show abstract

Section: Nanoparticle Migration Effectsmentioning

confidence: 99%

Different modes of nanoparticle migration at mixed convection of Al2O3–water nanofluid inside a vertical microannulus in the presence of heat generation/absorption

Moshizi

Malvandi

2016

J Therm Anal Calorim

View full text Add to dashboard Cite

show abstract

“…Yang et al [35] explained the impact of the temperature jump in the continuum flow and slip flow. They have investigated the heat transfer in nanofluids.…”

Section: Boundary and Initial Conditionmentioning

confidence: 99%

“…They have investigated the heat transfer in nanofluids. At the wall, the temperature jump lead to the following expression by Gad-el-Hak [35]…”

Section: Boundary and Initial Conditionmentioning

confidence: 99%

Study of Heat Dissipation Mechanism in Nanoscale MOSFETs Using BDE Model

Rezgui¹,

Nasri²,

Aissa³

et al. 2018

Green Electronics

View full text Add to dashboard Cite

In this chapter, we report the nano-heat transport in metal-oxide-semiconductor field effect transistor (MOSFET). We propose a ballistic-diffusive model (BDE) to inquire the thermal stability of nanoscale MOSFET's. To study the mechanism of scattering in the interface oxide-semiconductor, we have included the specularity parameter defined as the probability of reflection at boundary. In addition, we have studied the effective thermal conductivity (ETC) in nanofilms we found that ETC depend with the size of nanomaterial. The finite element method (FEM) is used to resolve the results for a 10 nm channel length. The results prove that our proposed model is close to those results obtained by the Boltzmann transport equation (BTE).

show abstract

“…Based on the above analysis, he proposed that the homogeneous models are more appropriate for predicting the heat transfer coefficient. By using this model, Yang et al [4] studied the variation of forced convection transport with temperature jump in continuous flow and slip flow regimes. F. Hedayati et al [5] studied the variation of TiO 2 − H 2 O nanofluid mixing convection within vertical microchannel of nanoparticle migration and asymmetric heating.…”

Section: Introductionmentioning

confidence: 99%

Effects of Second-Order Velocity Slip and the Different Spherical Nanoparticles on Nanofluid Flow

2020

View full text Add to dashboard Cite

The paper theoretically investigates the heat transfer of nanofluids with different nanoparticles inside a parallel-plate channel. Second-order slip condition is adopted due to the microscopic roughness in the microchannels. After proper transformation, nonlinear partial differential systems are converted to ordinary differential equations with unknown constants, and then solved by homotopy analysis method. The residual plot is drawn to verify the convergence of the solution. The semi-analytical expressions between NuB and NBT are acquired. The results show that both first-order slip parameter and second-order slip parameter have positive effects on NuB of the MHD flow. The effect of second-order velocity slip on NuB is obvious, and NuB in the alumina–water nanofluid is higher than that in the titania–water nanofluid. The positive correlation between slip parameters and Ndp is significant for the titania–water nanofluid.

show abstract

Effect of temperature jump on forced convective transport of nanofluids in the continuum flow and slip flow regimes

Cited by 21 publications

References 41 publications

Different modes of nanoparticle migration at mixed convection of Al2O3–water nanofluid inside a vertical microannulus in the presence of heat generation/absorption

Different modes of nanoparticle migration at mixed convection of Al2O3–water nanofluid inside a vertical microannulus in the presence of heat generation/absorption

Study of Heat Dissipation Mechanism in Nanoscale MOSFETs Using BDE Model

Effects of Second-Order Velocity Slip and the Different Spherical Nanoparticles on Nanofluid Flow

Contact Info

Product

Resources

About