CFD INVESTIGATION OF GRAVITATIONAL SEDIMENTATION EFFECT ON HEAT TRANSFER OF A NANO-FERROFLUID

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JAFARI AREZOU; SHAHMOHAMMADI ALI; MOUSAVI SEYED MOHAMMAD

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Journal: Iranian Journal of Chemistry and Chemical Engineering Year:2015 | Volume:34 | Issue:1 Page(s): 87-96

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Title

CFD INVESTIGATION OF GRAVITATIONAL SEDIMENTATION EFFECT ON HEAT TRANSFER OF A NANO-FERROFLUID

Author(s)

JAFARI AREZOU | SHAHMOHAMMADI ALI | MOUSAVI SEYED MOHAMMAD | Issue Writer Certificate

Keywords

CFD SIMULATION

THERMAL CONVECTION

HEAT TRANSFER

GRAVITATIONAL SEDIMENTATION

NANO-FERROFLUID

Abstract

In the present attempt, flow behavior and THERMAL CONVECTION of one type of nanofluids in a disc geometry was investigated using Computational Fluid Dynamics (CFD). Influence of gravity induced sedimentation also has been studied. The commercial software, Fluent 6.2, has been employed to solve the governing equations. A user defined function was added to apply a uniform external magnetic field. Obtained results showed that the critical value for Rayleigh number is near 1708, so simulations are in good agreement with the theoretical value for critical Rayleigh number. In addition, it was found that gravity causes separation of phases and sedimentation of nanoparticles, besides, increase in natural convection due to presence of gravity, leads to HEAT TRANSFER enhancement. In addition, results indicate that, thermal forces are able to disrupt agglomerates when ratio of thermal energy to dipole-dipole contact energy becomes more than unity.

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APA: Copy

JAFARI, AREZOU, SHAHMOHAMMADI, ALI, & MOUSAVI, SEYED MOHAMMAD. (2015). CFD INVESTIGATION OF GRAVITATIONAL SEDIMENTATION EFFECT ON HEAT TRANSFER OF A NANO-FERROFLUID. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), 34(1), 87-96. SID. https://sid.ir/paper/635671/en

Vancouver: Copy

JAFARI AREZOU, SHAHMOHAMMADI ALI, MOUSAVI SEYED MOHAMMAD. CFD INVESTIGATION OF GRAVITATIONAL SEDIMENTATION EFFECT ON HEAT TRANSFER OF A NANO-FERROFLUID. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE)[Internet]. 2015;34(1):87-96. Available from: https://sid.ir/paper/635671/en

IEEE: Copy

AREZOU JAFARI, ALI SHAHMOHAMMADI, and SEYED MOHAMMAD MOUSAVI, “CFD INVESTIGATION OF GRAVITATIONAL SEDIMENTATION EFFECT ON HEAT TRANSFER OF A NANO-FERROFLUID,” IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), vol. 34, no. 1, pp. 87–96, 2015, [Online]. Available: https://sid.ir/paper/635671/en

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