MHD mixed convection and entropy generation in a lid-driven cavity with rotating cylinders filled by a nanofluid using two phase mixture model

Barnoon, Pouya; Toghraie, Davood; Dehkordi, Reza Balali; Abed, Hossein

doi:10.1016/j.jmmm.2019.03.108

Cited by 148 publications

(26 citation statements)

References 44 publications

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“…In this work the authors have used horizontal magnetic field. Barnoon et al 42 have also discussed mixed convection with production of entropy using a square cavity where the cavity was filled with nanoparticles in the occurrence of magnetic effects. Farzinpour et al 43 have discussed the simulation for molecular dynamics using effects of ferro-nanofluid and unsteady magnetic field effects.…”

Section: Introductionmentioning

confidence: 99%

Insight into the dynamics of second grade hybrid radiative nanofluid flow within the boundary layer subject to Lorentz force

Jawad

Saeed

Tassaddiq

et al. 2021

Sci Rep

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The magnetohydrodynamic hybrid second-grade nanofluid flow towards a stretching/shrinking sheet with thermal radiation is inspected in current work. Main concern of current investigation is to consider hybrid $$Al_{2} O_{3} - Cu$$ A l 2 O 3 - C u nanofluid which is perceived by hanging two dissimilar kinds of nanoparticles known as alumina and copper within the base fluid. The fluid motion is produced by non-linear stretching/shrinking sheet. The modeled equations which comprise of energy, motion and continuity equations are changed into dimensionless form using group of similar variables. To determine the solution of transformed problem, the Homotopy Analysis technique is used. The findings of this work revealed that the magnetic parameter improves the heat transfer rate. This work also ensures that there are non-unique solutions of modeled problem for shrinking case and a unique solution for stretching case. Higher values of $${\text{Re}}_{x}$$ Re x results in declining of flow field. Rise in $$M$$ M agrees to a decline in velocity distributions. Higher values of second order fluid parameter reduces the viscosity of fluid and accordingly velocity increases. Velocity profile is also a decreasing function of volume friction.

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Section: Introductionmentioning

confidence: 99%

Insight into the dynamics of second grade hybrid radiative nanofluid flow within the boundary layer subject to Lorentz force

Jawad

Saeed

Tassaddiq

et al. 2021

Sci Rep

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“…Results show the significant effect of the hybrid nanofluid on the average Nusselt number. Barnoon et al 22 studied MHD mixed convection and entropy production in a lid‐driven cavity with rotating cylinders filled with nanofluid using the two‐phase mixture model. Results showed that isothermal cylinders would have a significant impact on increasing heat transfer.…”

Section: Introductionmentioning

confidence: 99%

MHD heat transfer and entropy production of an Al₂O₃‐water nanofluid in a horizontal cylinder

Belahmadi

Bessaïh

2021

Heat Trans

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This paper deals with the effect of magnetic fields (Br, Bθ, Bz) applied in r‐, θ‐, z‐directions, respectively, on entropy production and heat transfer and in a horizontal cylinder filled with an Al2O3‐water nanofluid. The results are verified using literature data. For different Richardson, Ri, and Hartmann numbers, Ha, the nanoparticles (NP) ϕ, and magnetic field orientation combined effect provide a better understanding of heat transfer and entropy optimization. The results indicate that entropy production and heat transfer and rates depend on magnetic field intensity and direction. Also, increasing Ri and NP increases entropy generation and heat transfer. Finally, applying a radial magnetic field promotes a better convective heat transfer and minimizes entropy production.

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“…As stated, the entropy generation decreases with increasing Hartmann number. Numerical study of forced convection heat transfer and entropy generation in a lid-driven enclosure with two rotating cylinders filled with a nanofluid in the presence of a magnetic field is done by Barnoon et al [33]. They have utilized a two-phase model to simulate the flow and heat transfer in nanofluids.…”

Section: Introductionmentioning

confidence: 99%

Immersed boundary method for MHD unsteady natural convection around a hot elliptical cylinder in a cold rhombus enclosure filled with a nanofluid

Hosseinjani

Roohi

2021

SN Appl. Sci.

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In this study, the numerical investigation of the natural convection heat transfer around a hot elliptical cylinder inside a cold rhombus enclosure filled with a nanofluid in the presence of a uniform magnetic field is conducted. An immersed boundary method as a computational tool has been extended and applied to solve the problem. The influence of various parameters such as cylinder diameters (a, b), Hartmann number (Ha = 0, 50 and 100), nanofluid volume fraction ($$\varphi = 0 , 2.5\% and 5\%$$ φ = 0 , 2.5 % a n d 5 % ), and Rayleigh number (Ra = 103, 104, 105, 106, and 107) has been studied. Streamlines and isotherms contours as well as average Nusselt number have been specified for different modes. An equation for the average Nusselt number as a function of mentioned parameters is presented in this paper. The results show that at lower Ra numbers of Ra = 103 and 104, the magnetic field effect is negligible. However, at higher Rayleigh numbers, the average Nusselt number (Nuave) decreases with the increasing Ha number. The maximum decrease in Nuave at Ra = 105, 106 and 107are calculated −8.15%, −23.4% and −27.3%, respectively. An asymmetry-unsteady flow is observed at $${\text{Ra}} = 10^{7}$$ Ra = 10 7 for Ha = 0. However, at higher Ha numbers a steady-symmetrical flow is formed.

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MHD mixed convection and entropy generation in a lid-driven cavity with rotating cylinders filled by a nanofluid using two phase mixture model

Cited by 148 publications

References 44 publications

Insight into the dynamics of second grade hybrid radiative nanofluid flow within the boundary layer subject to Lorentz force

Insight into the dynamics of second grade hybrid radiative nanofluid flow within the boundary layer subject to Lorentz force

MHD heat transfer and entropy production of an Al₂O₃‐water nanofluid in a horizontal cylinder

Immersed boundary method for MHD unsteady natural convection around a hot elliptical cylinder in a cold rhombus enclosure filled with a nanofluid

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MHD mixed convection and entropy generation in a lid-driven cavity with rotating cylinders filled by a nanofluid using two phase mixture model

Cited by 148 publications

References 44 publications

Insight into the dynamics of second grade hybrid radiative nanofluid flow within the boundary layer subject to Lorentz force

Insight into the dynamics of second grade hybrid radiative nanofluid flow within the boundary layer subject to Lorentz force

MHD heat transfer and entropy production of an Al2O3‐water nanofluid in a horizontal cylinder

Immersed boundary method for MHD unsteady natural convection around a hot elliptical cylinder in a cold rhombus enclosure filled with a nanofluid

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MHD heat transfer and entropy production of an Al₂O₃‐water nanofluid in a horizontal cylinder