Investigation of Mixed Convection Flow in a Lid-driven Cavity Filled with Micropolar Nanofluid

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HADIZADEH A.; HAGHIGHI POSHTIRI A.; BAHRAMI A.

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Journal: Modares Mechanical Engineering Year:2019 | Volume:19 | Issue:6 Page(s): 1483-1494

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Title

Investigation of Mixed Convection Flow in a Lid-driven Cavity Filled with Micropolar Nanofluid

Author(s)

HADIZADEH A. | HAGHIGHI POSHTIRI A. | BAHRAMI A. | Issue Writer Certificate

Keywords

MicropolarQ1

Mixed ConvecectionQ2

NanofluidQ1

Abstract

In order to evaluate the ability of Micropolar fluid model to simulate Nanofluids, mixed convective heat transfer of a Micropolar Nanofluid in a square lid-driven cavity has been numerically studied. The governing equations were solved by finite volume method, using SIMPLE algorithm. In this paper, the effect of parameters like the Grashof number, the volume fraction of nanoparticles, and Micropolarity ratio on the heat transfer of Al2O3-Water Nanofluid have been investigated. Also, to calculate fluid viscosity and thermal conductivity coefficient of the Nanofluid, the temperature-depended variable model was used, considering the Brownian motion of the particle. The results showed that the increase in Grashof number amplifies the buoyancy force and enhances the Nusselt number as well as heat transfer rate. Also, the increase in Micropolar viscosity at low Grashof numbers intensifies the forced convection and increases the Nusselt number over the hot wall. However, at Gr=105, the increase in Micropolar viscosity up to K=1 leads to the decrease in the amount of heat transfer, but its further increase entails the increase in heat transfer. Although the addition of nanoparticles to the fluid improves heat transfer rate, the extent of improvement at Micropolar Nanofluid is lower than that in the Newtonian Nanofluid.

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APA: Copy

HADIZADEH, A., HAGHIGHI POSHTIRI, A., & BAHRAMI, A.. (2019). Investigation of Mixed Convection Flow in a Lid-driven Cavity Filled with Micropolar Nanofluid. MODARES MECHANICAL ENGINEERING, 19(6 ), 1483-1494. SID. https://sid.ir/paper/178644/en

Vancouver: Copy

HADIZADEH A., HAGHIGHI POSHTIRI A., BAHRAMI A.. Investigation of Mixed Convection Flow in a Lid-driven Cavity Filled with Micropolar Nanofluid. MODARES MECHANICAL ENGINEERING[Internet]. 2019;19(6 ):1483-1494. Available from: https://sid.ir/paper/178644/en

IEEE: Copy

A. HADIZADEH, A. HAGHIGHI POSHTIRI, and A. BAHRAMI, “Investigation of Mixed Convection Flow in a Lid-driven Cavity Filled with Micropolar Nanofluid,” MODARES MECHANICAL ENGINEERING, vol. 19, no. 6 , pp. 1483–1494, 2019, [Online]. Available: https://sid.ir/paper/178644/en

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