Radiative nanofluid flow and heat transfer between parallel disks with penetrable and stretchable walls considering Cattaneo–Christov heat flux model

Dogonchi, A.S.; Chamkha, Ali J.; Seyyedi, Seyyed Masoud; Ganji, D.D.

doi:10.1002/htj.21339

Cited by 62 publications

(33 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One can assess the past and recent advancements subject to both the Newtonian and non-Newtonian fluid models in Refs. [18][19][20][21][22][23][24][25][26][27][28][29][30]. In this attempt, the analysis is limited to one of the non-Newtonian fluids known as Power law or Ostwald-de Waele equation.…”

Section: Literature Assessmentmentioning

confidence: 99%

A potential alternative CFD simulation for steady Carreau–Bird law-based shear thickening model: Part-I

Rehman

Malik

Mahmood

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

The current article provides the numerical investigation into an infinite-length circular cylinder placed as an obstacle in the flow of non-Newtonian fluid. To be more specific, a channel of length 2.2 m and height 0.41 m is considered. The Power law fluid model is carried out with Carreau-Bird law as a non-Newtonian fluid model, and both the Power law linear (constant) and parabolic velocity profiles are initiated simultaneously at an inlet of the channel. The right wall as an outlet is carried with Neumann condition. The relative velocity of Power law fluid particles with both the lower and upper walls is taken zero. A mathematical model is structured in terms of nonlinear differential equations. A well-trusted numerical technique named finite element method is adopted commercially. The LBB-stable element pair is utilized to approximate the velocity and pressure. The nonlinear iterations are stopped when the residual is dropped by 10 −6. The impact of Power law index and Reynolds number on the primitive variables is inspected. The obtained observations in this direction are provided by means of both the contour plots and line graphs. Due to a circular obstacle, both the drag and lift coefficients are evaluated around the outer surface of an obstacle towards the higher values of the Power law index. The numerical values of drag and lift coefficients up to various refinement mesh levels of domain are provided by way of tables. It is noticed that the parabolic velocity profile at an inlet of channel is compatible as compared to the linear velocity profile. Further, both the drag and lift coefficients are increasing function of Power law index. Keywords Power law fluid model • Linear and parabolic profiles • Finite element method • Drag and lift coefficients List of symbols (x, y, z) Space variables ⃗ V = (u, v, w) Velocity field Fluid density p Pressure ↔ Stress tensor ⃗ B Body force Fluid viscosity Apparent viscosity n Power law index K Consistency coefficient U mean Mean velocity D Characteristic length (diameter of circular cylinder) Re Reynolds number U max Maximum velocity F D Drag force F L Lift force C D Drag coefficient C L Lift coefficient

show abstract

Section: Literature Assessmentmentioning

confidence: 99%

A potential alternative CFD simulation for steady Carreau–Bird law-based shear thickening model: Part-I

Rehman

Malik

Mahmood

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…Experimental results show that adding nanoparticles to the base fluid increases the heat transfer coefficient of nanofluids. Using nanofluids is one of the novel heat transfer improvement methods with high efficiency [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer of Oil/MWCNT Nanofluid Jet Injection Inside a Rectangular Microchannel

et al. 2019

View full text Add to dashboard Cite

In the current study, laminar heat transfer and direct fluid jet injection of oil/MWCNT nanofluid were numerically investigated with a finite volume method. Both slip and no-slip boundary conditions on solid walls were used. The objective of this study was to increase the cooling performance of heated walls inside a rectangular microchannel. Reynolds numbers ranged from 10 to 50; slip coefficients were 0.0, 0.04, and 0.08; and nanoparticle volume fractions were 0-4%. The results showed that using techniques for improving heat transfer, such as fluid jet injection with low temperature and adding nanoparticles to the base fluid, allowed for good results to be obtained. By increasing jet injection, areas with eliminated boundary layers along the fluid direction spread in the domain. Dispersing solid nanoparticles in the base fluid with higher volume fractions resulted in better temperature distribution and Nusselt number. By increasing the nanoparticle volume fraction, the temperature of the heated surface penetrated to the flow centerline and the fluid temperature increased. Jet injection with higher velocity, due to its higher fluid momentum, resulted in higher Nusselt number and affected lateral areas. Fluid velocity was higher in jet areas, which diminished the effect of the boundary layer.

show abstract

“…Chamkha et al examined the magnetohydrodynamic nanofluid through an enclosure. Some recent advancement in nanofluid branch can be seen in the following studies . Magnetic drug delivery systems are of particular importance in cancer therapy.…”

Section: Introductionmentioning

confidence: 99%

Peristaltically induced flow of nanomaterial through uniform porous space and gravitational aspects

et al. 2019

View full text Add to dashboard Cite

Magneto peristaltic flows of nanofluids play a key role in magnetic drug transport systems. Therefore, peristalsis of a nanofluid through a uniform porous medium under the influence of a uniform magnetic force is studied here.Ohmic heating and Hall aspects are incorporated in the analysis. Three distinct types of nanoparticles (ie, silver, alumina, and copper) have been used for theoretical analysis. A large wavelength and a small Reynolds number scheme are adopted in mathematical modeling. The dimensionless nonlinear system is solved using the well-known perturbation method, and physical analysis is done via graphs. A comparison of different nanoparticles is also presented. It is noticed that an increase in the Hall effects nullifies the variations, which are due to an increment in the Hartman number. The temperature of the nanofluid can be reduced by increasing the permeability of the porous medium. K E Y W O R D SHall effects, magnetohydrodynamics, nanofluids, porous medium | INTRODUCTIONThe analysis of nanofluids has attracted the attention of researchers from all over the world over the past decade. Nanofluids are prepared by suspending nanometer-sized metallic particles in conventional heat transfer fluids. This novel technique has been developed by Choi. 1 The idea of a nanofluid originated when conventional fluids were proving to be less helpful for usage in different mechanical processes because of their lesser thermal conductivity. To amplify the use of conventional fluids, their thermal conductivity is improved via the use of metals, as metals (like gold, silver, and copper) naturally have higher thermal conductivities. Carbides, metal oxides, metals, and carbon nanotubes are commonly used as nanoparticles. Their size varies in the range from 1 to 100 nm. The base fluids are oil, ethylene glycol, and water. Nanofluids have an ability to magnify the thermophysical aspects include thermal diffusively, viscosity, thermal conductivity, and convective heat transport coefficients. Such properties are the chief reason behind the diverse applications of nanofluids in domestic and industrial cooling, automobile and IT industry, modern drug delivery systems, nuclear reactors, microscale fluidic applications, extraction of geothermal power, cryopreservatives, and optics and nanocryosurgery. Such wide applications of nanofluids have persuaded motivated researchers from all over the globe to investigate different aspects of nanofluids. [2][3][4][5][6][7][8][9][10] Peristalsis is an involuntary series of muscle contractions and relaxation that takes place within the body of living beings to move biological fluids (eg, chyme, blood vessels, bile, urine, male, and reproductive cells) towards different processing units. Earthworms employ a similar treatment to drive their locomotion. Subject to its utility, the principle of peristalsis is being implemented by engineers in designing many industrial appliances, for example, peristaltic pumps. Such pumps are particularly useful in driving sensitive/corrosive and reactive ...

show abstract

Radiative nanofluid flow and heat transfer between parallel disks with penetrable and stretchable walls considering Cattaneo–Christov heat flux model

Cited by 62 publications

References 43 publications

A potential alternative CFD simulation for steady Carreau–Bird law-based shear thickening model: Part-I

A potential alternative CFD simulation for steady Carreau–Bird law-based shear thickening model: Part-I

Heat Transfer of Oil/MWCNT Nanofluid Jet Injection Inside a Rectangular Microchannel

Peristaltically induced flow of nanomaterial through uniform porous space and gravitational aspects

Contact Info

Product

Resources

About