Stagnation Point Flow Over a Stretching or Shrinking Cylinder in a Copper-Water Nanofluid

Omar, Nasiroh; Bachok, Norfifah; Arifin, Norihan Md

doi:10.17485/ijst/2015/v8i31/85405

Cited by 20 publications

(20 citation statements)

References 14 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

Self Cite

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…The set of transformed non-linear eqs. (12), (13), and (18) along with the boundary conditions (16) and (19) were solved numerically using the bvp4c code from MATLAB. To clearly realize physical insight for boundary-layer flow of a nanofluid in presence of homogeneous-heterogeneous reactions, the obtained numerically results for the skin friction coefficient The effect of curvature, γ , on the velocity, temperature and concentration profiles are depicted in figs.…”

Section: Resultsmentioning

confidence: 99%

“…Hayat et al [18] analyzed the effect of viscous dissipation on the flow of a Casson fluid past an inclined stretching cylinder with thermal radiation. Recently, Omar et al [19] obtained the similarity solution of viscous flow near a stagnation point of a nanofluid towards a shrinking cylinder.…”

Section: Introductionmentioning

confidence: 99%

Boundary layer flow of a copper-water nanofluid over a permeable shrinking cylinder with homogenous-hetrogenous reactions: Dual solutions

2019

View full text Add to dashboard Cite

This research addresses the axi-symmetric flow of a Cu-water nanofluid past a porous shrinking cylinder in the presence of homogeneous-heterogeneous reactions. Using a similarity transformation, the basic PDE's are converted into ODE's. The transformed equations are solved using bvp4c numerically from MATLAB for several values of the physical parameters. The physical impact of governing parameters on the velocity profile, temperature profile, concentration profile as well as the skin friction coefficient, (0) f ′′ , and the heat transfer rate, (0) θ ′ − , are discussed carefully. The results indicate that the multiple solutions only exist when a certain value of suction is implemented through the permeable cylinder. Further, the curvature parameter, γ , accelerates the boundary-layer separation.

show abstract

“…In addition, to studying and facilitate learning Runge-Kutta 5th order numerically manner, a flowchart is made ( Figure 1A). 39,42,44 It should be noted that to show the precision of the solution to the equations in this issue by the method mentioned above, the achieved outcome of this report has been compared with Omar et al, 45,46 which can be observed in Table 4. The accomplished comparison shows that the obtained consequence in this essay is highly accurate and acceptable.…”

Section: Numerical Methods For the Solutionmentioning

confidence: 91%

A numerical approach for MHD Al₂O₃–TiO₂/H₂O hybrid nanofluids over a stretching cylinder under the impact of shape factor

Ghobadi

Hassankolaei

2019

Heat Trans. Asian Res.

View full text Add to dashboard Cite

In this research, the heat transfer and magnetohydrodynamic stagnation point flow of a (Al 2 O 3 -TiO 2 /H 2 O) hybrid nanofluid past a stretching cylinder under the impact of heat generation, nonlinear thermal radiation, and nanoparticles shape factor has been analyzed using the Runge-Kutta-Fehlberg fifth order numerically method. The impact of changing diverse parameters, such as nanoparticles shape factor, named hexahedron and lamina, on temperature and velocity profiles and induced magnetic field, has been explored. The main motivation of this article is using hybrid nanoparticles to improve heat transfer. The novel findings of the current research illustrate that the Lorentz force produced by increasing magnetic field parameter (M) causes a decline in velocity profile; also increasing solar radiation, shape factor and the use of hybrid nanoparticles caused increment in the temperature profile. Furthermore, the lamina nanoparticle shape has more impact on Nusselt number (Nu) compared with hexahedron-shaped nanoparticle.

show abstract

Stagnation Point Flow Over a Stretching or Shrinking Cylinder in a Copper-Water Nanofluid

Cited by 20 publications

References 14 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

Boundary layer flow of a copper-water nanofluid over a permeable shrinking cylinder with homogenous-hetrogenous reactions: Dual solutions

A numerical approach for MHD Al₂O₃–TiO₂/H₂O hybrid nanofluids over a stretching cylinder under the impact of shape factor

Contact Info

Product

Resources

About

Stagnation Point Flow Over a Stretching or Shrinking Cylinder in a Copper-Water Nanofluid

Cited by 20 publications

References 14 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

Boundary layer flow of a copper-water nanofluid over a permeable shrinking cylinder with homogenous-hetrogenous reactions: Dual solutions

A numerical approach for MHD Al2O3–TiO2/H2O hybrid nanofluids over a stretching cylinder under the impact of shape factor

Contact Info

Product

Resources

About

A numerical approach for MHD Al₂O₃–TiO₂/H₂O hybrid nanofluids over a stretching cylinder under the impact of shape factor