Application of Finite-Difference Based Lattice Boltzmann Method for Numerical Simulation of Nanofluid Turbulent Convection in channel

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Rahmati A.R.; Arabi A.; Gheibi A.

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Journal Paper

Paper Information

Journal: Journal of Solid and Fluid Mechanics Year:2021 | Volume:11 | Issue:1 Page(s): 325-350

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Information Journal Paper

Title

Application of Finite-Difference Based Lattice Boltzmann Method for Numerical Simulation of Nanofluid Turbulent Convection in channel

Author(s)

Rahmati A.R. | Arabi A. | Gheibi A. | Issue Writer Certificate

Keywords

Keywords: Finite - difference based lattice Boltzmann method

Turbulent Flow

Heat Transfer

Nanofluid

Abstract

In the present work, for the first time, using the finite - difference based lattice Boltzmann method, the convection Heat Transfer of the Nanofluid in a cavity and channel is simulated. And also the effects of various factors such as Rayleigh number, Nanofluid volume fraction and Reynolds number have been investigated. The Large Eddy Simulation (LES) method applied for modeling the Turbulent Flow. The natural convection Heat Transfer in the cavity for the Rayleigh range of 103 to 1010 and the volume fraction range of 0 to 1% has been evaluated. The forced convection Heat Transfer convection in the channel for the Reynolds number range of 50 to 3000 and the volume fraction range of 0 to 1% has been evaluated. The results show that the finite - difference based lattice Boltzmann method is able to simulate Turbulent Flows in different geometries. The results also show that natural convection Heat Transfer in the cavity, by enhancing Rayleigh number and the Nanofluid volume fraction, the Heat Transfer rate increases. The forced convection Heat Transfer in the channel, enhancing the Reynolds number and enhancing the volume fraction of nanoparticles increases the Heat Transfer rate.

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