Buongiorno’s model for double-diffusive mixed convective stagnation-point flow of a nanofluid considering diffusiophoresis effect of binary base fluid

Dinarvand, Saeed; Hosseini, Reza; Abulhasansari, Milad; Pop, Ioan

doi:10.1016/j.apt.2015.07.017

Cited by 54 publications

(16 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These examples of nanofluid applications are discussed in in numerous papers [17][18][19][20][21]. Many researches have considered nanofluids in their work covering various scopes, surfaces, objects, and also effects, e.g., [22][23][24][25][26][27][28]. Pour and Nassab [29] investigated the single-phase laminar convection of nanofluids over a two-dimensional (2D) horizontal backward facing step (BFS) depending numerically on the bleeding condition (suction/injection).…”

Section: Introductionmentioning

confidence: 99%

Unsteady Stagnation-Point Flow and Heat Transfer Over a Permeable Exponential Stretching/Shrinking Sheet in Nanofluid with Slip Velocity Effect: A Stability Analysis

et al. 2018

View full text Add to dashboard Cite

A model of unsteady stagnation-point flow and heat transfer over a permeable exponential stretching/shrinking sheet with the presence of velocity slip is considered in this paper. The nanofluid model proposed by Tiwari and Das is applied where water with Prandtl number 6.2 has been chosen as the base fluid, while three different nanoparticles are taken into consideration, namely Copper, Alumina, and Titania. The ordinary differential equations are solved using boundary value problem with fourth order accuracy (bvp4c) program in Matlab to find the numerical solutions of the skin friction and heat transfer coefficients for different parameters such as stretching/shrinking, velocity slip, nanoparticle volume fraction, suction/injection, and also different nanoparticles, for which the obtained results (dual solutions) are presented graphically. The velocity and temperature profiles are presented to show that the far field boundary conditions are asymptotically fulfilled, and validate the findings of dual solutions as displayed in the variations of the skin friction and heat transfer coefficients. The last part is to perform the stability analysis to determine a stable and physically-realizable solution.

show abstract

Section: Introductionmentioning

confidence: 99%

Unsteady Stagnation-Point Flow and Heat Transfer Over a Permeable Exponential Stretching/Shrinking Sheet in Nanofluid with Slip Velocity Effect: A Stability Analysis

et al. 2018

View full text Add to dashboard Cite

show abstract

“…where, c Ã ¼ (24) and (28), together with the boundary conditions (17)(18)(19), (22)(23), (25)(26), (29) and (30), are solved numerically using an implicit, iterative tridiagonal finite difference method similar to that discussed in Ref. [42].…”

Section: • Thermal Diffusion Of Chemical Species (Soret Effect)mentioning

confidence: 99%

“…This investigation also included unsteady and temperature-dependent heat generation and considered two types of nanofluids [24]. It is worth mentioning that the general literature on impinging flows upon stretching surfaces with chemical reactions and Soret and Dufour effect is rather wide (see for example [23,[25][26][27]). However, as the focus of the current work is on the curved surfaces embedded in porous media, nonporous configurations are not discussed here.…”

Section: Introductionmentioning

confidence: 99%

Analysis of transport from cylindrical surfaces subject to catalytic reactions and non-uniform impinging flows in porous media

Alizadeh

Karimi

Mehdizadeh

et al. 2019

J Therm Anal Calorim

View full text Add to dashboard Cite

This paper investigates forced convection of heat and mass from the catalytic surface of a cylinder featuring non-uniform transpiration and impinging flows in porous media. The non-equilibrium thermodynamics including Soret and Dufour effects and local thermal non-equilibrium are considered. Through employing appropriate change of variables, the governing equations in cylindrical coordinate are reduced to nonlinear ordinary differential equations and solved using a finite difference scheme. This results in the calculation of the temperature and concentration fields as well as the local and surface-averaged Nusselt and Sherwood numbers. The conducted analyses further include evaluation of the rate of entropy generation within the porous medium. It is shown that internal heat exchanges inside the porous medium, represented by Biot number, dominate the temperature fields and Nusselt number. This indicates that consideration of local thermal nonequilibrium is of highly important. It is also demonstrated that Dufour and Soret effects can significantly influence the development of thermal and concentration boundary layers and hence modify the values of Nusselt and Sherwood numbers. In particular, it is shown that small variations in Soret and Dufour numbers can lead to noticeable changes in the average Nusselt and Sherwood numbers. Such modifications are strongly dependent upon the type of transpiration and characteristics of the impinging flow. The present work is the first analysis of non-equilibrium effects upon transport by stagnation flows around the curved surfaces embedded in porous media. Keywords Stagnation-point flow Á Local thermal non-equilibrium Á Coupled heat and mass transfer Á Similarity solution Á Soret effect Á Dufour effect Á Entropy generation

show abstract

“…Using dimensionless transformation equations (31)(32)(33)(34)(35)(36) in the boundary conditions (12)(13)(14)(15)(16)(17)(18)(19)(20)(21), we get…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…Zargartalebi et al [14] studied the heat transfer for stagnation-point flow of nanofluid across the streching plates. Dinarvand et al [15] analyzed the Brownian motion and thermophoresis effect for the nanofluid flow near a vertical surface. Malvandia et al [16] investigated the effect of radial magnetic field of forced convection of a nanofluid through two homocentric horizontal cylinders.…”

Section: Introductionmentioning

confidence: 99%

MHD stagnation point flow of micropolar nanofluid between parallel porous plates with uniform blowing

2016

View full text Add to dashboard Cite

The combine effect of nanoparticle and magnetic field on a micropolar fluid flow between two parallel coaxial porous plates with uniform blowing is investigated in this article. The two kinds of Nanoparticles, i.e. Copper Oxide (CuO) and Alumina (Al 2 O 3 ) are mixed with base fluid water to prepare the mixture of microplar nanofluid for the analysis of this problem. The convergence analysis of the numerical solutions is considered for large mesh size and high tolerance error. It is interesting to note that the skin friction coefficient at the lower plate increases with increasing the magnetic field for both CuO − water and Al 2 O 3 − water micro-polar nanofluid but it decreases with increases in volume fraction of nanoparticles in both the fluids. A novel result is found from this analysis that the rate of heat transfer at the lower plate increases with increasing the either magnetic parameter or micro-rotation parameter or the volume fraction of nanoparticles in the case of both fluids. The effects of magnetic field and micro-rotation parameter on the velocity, micro-rotation, temperature and concentration profiles are analyzed. The radial velocity profiles increase near the stagnation point but decreases near the plates by increasing the blowing parameter.

show abstract

Buongiorno’s model for double-diffusive mixed convective stagnation-point flow of a nanofluid considering diffusiophoresis effect of binary base fluid

Cited by 54 publications

References 32 publications

Unsteady Stagnation-Point Flow and Heat Transfer Over a Permeable Exponential Stretching/Shrinking Sheet in Nanofluid with Slip Velocity Effect: A Stability Analysis

Unsteady Stagnation-Point Flow and Heat Transfer Over a Permeable Exponential Stretching/Shrinking Sheet in Nanofluid with Slip Velocity Effect: A Stability Analysis

Analysis of transport from cylindrical surfaces subject to catalytic reactions and non-uniform impinging flows in porous media

MHD stagnation point flow of micropolar nanofluid between parallel porous plates with uniform blowing

Contact Info

Product

Resources

About