Abstract
The present numerical study consists of a mixed convection heat transfer, taking place within a ventilated cubic cavity crossed by an alumina–water nanofluid. The ventilation is assured by three openings, practiced on the walls of the cavity. So, the cold nanofluid enters by an opening placed at the top of the left vertical wall and exits by two opening: one is placed at the bottom of the right vertical wall, and the second opening occupied several possibility of location along the four walls of the cavity. All the enclosure’s walls are maintained at a same temperature, higher than that of the entering fluid, except of the side walls which are adiabatic. The governing equations are discretized using the finite volume method and the SIMPLER algorithm to treat the coupling velocity–pressure. The method line by line is used to solve iteratively the algebraic equations. The simulations were carried for different values of the Richardson number (0 ≼ Ri ≼ 10), the Hartmann number (0 ≼ Ha ≼ 100) and a solid volume fractions φ = 4% using Koo–Kleinstreuer–Lee model for the evaluation of effective thermal conductivity and dynamic viscosity of nanofluid. The results are presented in the form of streamlines, isotherms, velocity vectors and average Nusselt number.
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Abbreviations
- B 0 :
-
External magnetic field (T)
- Cp:
-
Constant pressure specific heat (\( {\text{J}}\,{\text{kg}}^{ - 1} \,{\text{K}}^{ - 1} \))
- F :
-
Lorentz force (\( {\text{N}}\,{\text{m}}^{ - 3} \))
- G :
-
Gravitational acceleration (\( {\text{ms}}^{ - 2} \))
- H :
-
Height of cavity (m)
- Ha:
-
Hartman number
- K :
-
Thermal conductivity (\( {\text{W}}\,{\text{m}}^{ - 1} \,{\text{K}}^{ - 1} \))
- L :
-
Length of the cavity (m)
- Nu:
-
Nusselt number
- P :
-
Pressure (Pa)
- P :
-
Dimensionless pressure
- Pr:
-
Prandtl number
- Re:
-
Reynolds number
- Ri:
-
Richardson number
- S :
-
Coordinate adopted for distance along the walls (m)
- S :
-
Dimensionless coordinate, \( S\, = \,s\,H^{ - 1} \)
- T :
-
Temperature (K)
- x, y, z :
-
Cartesian coordinates (m)
- X, Y, Z :
-
Dimensionless Cartesian coordinates
- u, v, w :
-
Velocity components in the x-direction, y-direction and z-direction (ms−1)
- U, V, W :
-
Dimensionless velocity components
- Α :
-
Thermal diffusivity (\( {\text{m}}^{2} {\text{s}}^{ - 1} \))
- β :
-
Thermal expansion coefficient (\( {\text{K}}^{ - 1} \))
- Ρ :
-
Density (\( {\text{kg}}\,{\text{m}}^{ - 3} \))
- Ν :
-
Kinematic viscosity (\( {\text{m}}^{2} {\text{s}}^{ - 1} \))
- µ :
-
Dynamic viscosity (\( {\text{kg}}\,{\text{m}}^{ - 1} \,{\text{s}}^{ - 1} \))
- θ :
-
Dimensionless temperature
- φ :
-
Particle volume fraction
- σ :
-
Electrical conductivity (\( \Omega ^{ - 1} \,{\text{m}}^{ - 1} \))
- Avg:
-
Average
- Bf:
-
Base fluid
- Nf:
-
Nanofluid
- S:
-
Solid particles
References
Choi SUS. Enhancing thermal conductivity of fluid with nanoparticles. Dev Appl Non Newton Flows. 1995;66:99–105.
Daungthongsuk W, Wongwises S. A critical review of convective heat transfer of nanofluids. Renew Sustain Energy Rev. 2007;11(5):797–817.
Godson L, Raja B, Mohan LD, Wongwises S. Enhancement of heat transfer using nanofluids-an overview. Renew Sustain Energy Rev. 2010;14(2):629–41.
Khanafer K, Vafai K, Lightstone M. Buoyancy-driven heat transfer enhancement in a two-dimensional enclosure utilizing nanofluids. Int J Heat Mass Transf. 2003;46:3639–53.
Lai FH, Yang YT. Lattice Boltzmann simulation of natural convection heat transfer of Al2O3–water nanofluids in a square enclosure. Int J Therm Sci. 2011;50:1930–41.
Afshari A, Akbari M, Toghraie D, Yazdi ME. Experimental investigation of rheological behavior of the hybrid nanofluid of MWCNT–alumina/water (80%)–ethylene-glycol (20%). J Therm Anal Calorim. 2018;132:1001–15. https://doi.org/10.1007/s10973-018-7009-1.
Souritiji E, Gorji-Bandpy M, Ganji DD, Hosseinizadeh SF. Numerical analysis of mixed convection heat transfer of Al2O3–water nanofluid in a ventilated cavity considering different positions of the outlet port. Powder Technol. 2014;262:71–81.
Lounes K, Zohir Y, Yassine C, Hassane N. Numerical investigation of turbulent mixed convection in an open cavity. Int J Therm Sci. 2017;116:103–17.
Davidson PA. An introduction to magnetohydrodynamics. Cambridge: Cambridge University Press; 2001.
M’hamed B, Sidik NAC, Yazid MNAWM, Mamat R, Najafi G, Kefayati GHR. A review on why researchers apply external magnetic field on nanofluids. Int Commun Heat Mass Transf. 2006;78:60–7.
Afifah AN, Syahrullail S, Sidik NAC. Magnetoviscous effect and thermomagnetic convection of magnetic fluid: a review. Renew Sustain Energy Rev. 2016;55:1030–40.
Sheikholeslami M, Rokni Houman B. Simulation of nanofluid heat transfer in presence of magnetic field: a review. Int J Heat Mass Transf. 2017;115:1203–33.
Pirmohammadi M, Ghassemi M. Effect of magnetic field on convection heat transfer inside a tilted square enclosure. Int Commun Heat Mass Transf. 2009;36:776–80.
Malvandi A, Ganji D. Magnetic field and slip effects on free convection inside a vertical enclosure filled with alumina/water nanofluid. Chem Eng Res Des. 2015;94:355–64.
Chamkha AJ, Rashad AM, Armaghani T, Mansour MA. Effects of partial slip on entropy generation and MHD combined convection in a lid-driven porous enclosure saturated with a Cu–water nanofluid. J Therm Anal Calorim. 2017. https://doi.org/10.1007/s10973-017-6918-8.
Kasaeipoor A, Ghasemi B, Aminossadati SM. Convection of Cu-water nanofluid in a vented T-shaped cavity in the presence of magnetic field. Int J Therm Sci. 2015;94:50–60.
Ozoe H, Okada K. The effect of the direction of the external magnetic field on the three-dimensional natural convection in a cubical enclosure. Int J Heat Mass Transf. 1989;32:1939–54.
Sheikholeslami M, Ellahi R. Three dimensional mesoscopic simulation of magnetic field effect on natural convection of nanofluid. Int J Heat Mass Transf. 2015;89:799–808.
Wenning Z, Yuying Y, Yulei X, Baiqian L. Three dimensional lattice Boltzmann for mixed convection of nanofluids in the presence of magnetic field. Int Commun Heat Mass Transf. 2017;80:1–9.
Khadiri A, Bennacer R, Hasnaoui M, Amahmid A. A two- and three-dimensional multiple steady states in a porous cavity heated and salted from below. Int J Heat Mass Transf. 2011;50:918–29.
Boutra A, Ragui K, Bennacer R, Benkahla YK. Natural convection heat transfer of a Nanofluid into a cubical enclosure: lattice Boltzmann investigation. Arab J Sci Eng. 2016;41:1969–80.
Hadidi N, Bennacer R. Three-dimensional double diffusive natural convection across a cubical enclosure partially filled by vertical porous layer. Int J Therm Sci. 2016;101:143–57.
Kefayati GHR, Tang H. MHD mixed convection of viscoplastic fluids in different aspect ratios of a lid-driven cavity using LBM. Int J Heat Mass Transf. 2018;124:344–67.
Yu PX, Tian ZF. Comparison of the simplified and full MHD models for laminar incompressible flow past a circular cylinder. Appl Math Modell. 2016;000:1–21.
Sheikholeslami M, Rokni HB. Simulation of nanofluid heat transfer in presence of magnetic field: a review. Int J Heat Mass Transf. 2017;115:1203–33.
Hussain S, Mehmood K, Sagheer M. MHD mixed convection and entropy generation of water—alumina nanofluid flow in a double lid driven cavity with discrete heating. J Magn Magn Mater. 2016;419:140–55.
Koo J, Kleinstreuer C. Laminar nanofluid flow in micro heat-sinks. Int J Heat Mass Transf. 2005;48:2652–61.
Maxwell JA. Treatise on electricity and magnetism. 2nd ed. Cambridge: Oxford University Press; 1904.
Sheikholeslami M, Ellahi R. Three dimensional mesoscopic simulation of magnetic field effect on natural convection of nanofluid. Int J Heat Mass Transf. 2015;89:799–808.
Vanaki ShM, Ganesan P, Mohammed HA. Numerical study of convective heat transfer of nanofluids: a review. Renew Sustain Energy Rev. 2016;54:1212–39.
Mehmood K, Hussain S, Sagheer M. Numerical simulation of MHD mixed convection in alumina–water nanofluid filled square porous cavity using KKL model: effects of non-linear thermal radiation and inclined magnetic field. J Mol Liq. 2017. https://doi.org/10.1016/j.molliq.
Brinkman H. The viscosity of concentrated suspensions and solutions. J Chem Phys. 1952;20:571–81.
Patankar SV. Numerical heat transfer and fluid flow. New York: Hemisphere; 1980.
Krane RJ, Jessee J. Some detailed field measurements for a natural convection flow in a vertical square enclosure. In: 1st ASME-JSME thermal engineering joint conference. New York: ASME; 1983. pp. 323–329.
Khanafer K, Vafai K, Lightstone M. Buoyancy-driven heat transfer enhancement in a two-dimensional enclosure utilizing nanofluids. Int J Heat Mass Transf. 2003;46(19):3639–53.
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Kherroubi, S., Ragui, K., Bensaci, A. et al. Effect of the second outlet location and the applied magnetic field within a ventilated cubic cavity crossed by a nanofluid on mixed convection mode: best configurations. J Therm Anal Calorim 139, 2243–2264 (2020). https://doi.org/10.1007/s10973-019-08638-2
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DOI: https://doi.org/10.1007/s10973-019-08638-2