NUMERICAL SIMULATION OF FREE CONVECTION HEAT TRANSFER OF NANOFLUID IN A WAVYWALL CAVITY WITH SINUSOIDAL TEMPERATURE DISTRIBUTION, USING LATTICE BOLTZMANN METHOD

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SHAHRIARI ALIREZA

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:9 Page(s): 143-154

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Title

NUMERICAL SIMULATION OF FREE CONVECTION HEAT TRANSFER OF NANOFLUID IN A WAVYWALL CAVITY WITH SINUSOIDAL TEMPERATURE DISTRIBUTION, USING LATTICE BOLTZMANN METHOD

Author(s)

SHAHRIARI ALIREZA | Issue Writer Certificate

Keywords

NANOFLUIDQ1

LATTICE BOLTZMANN METHODQ1

FREE CONVECTIONQ2

COMPLEX-WAVY-WALLQ1

SINUSOIDAL TEMPERATURE DISTRIBUTIONQ1

Abstract

In this paper, FREE CONVECTION heat transfer of Al2O3/water NANOFLUID within an enclosed cavity is studied by adopting the lattice Boltzmann Model. The left and right side walls of the cavity have a complexwavy surface and the left wall is heated by a SINUSOIDAL TEMPERATURE DISTRIBUTION higher than the right cold wall. The top and the bottom horizontal walls are smooth and insulated against heat and mass. In this study, the variation of density is slight thus hydrodynamics and thermalfields equation are coupled using the Boussinesq approximation. The density and energy distribution are both solved by D2Q9 model. The influence of pertinent parameters such as solid volume fraction of nanoparticles, Rayleigh numbers, COMPLEX-WAVY-WALL geometry parameters, phase deviation and amplitude of the sinusoidal temperature function onflow and heat transfer fields are investigated. Results show for Rayleigh numbers in the range of Ra=103 -105, with increasing volume fraction of nanoparticles, Nusselt number increases. In addition, it is shown that for a fixed Rayleigh number, the heat transfer performance depends on tuning the wavy-surface geometry parameters. The greatest effects of nanoparticles are observed for different values of the phase deviation with increase in Rayleigh number. This study can, provide useful insight for enhancing the convection heat transfer performance within enclosed cavities with COMPLEX-WAVY-WALL surfaces and SINUSOIDAL TEMPERATURE DISTRIBUTION.

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APA: Copy

SHAHRIARI, ALIREZA. (2016). NUMERICAL SIMULATION OF FREE CONVECTION HEAT TRANSFER OF NANOFLUID IN A WAVYWALL CAVITY WITH SINUSOIDAL TEMPERATURE DISTRIBUTION, USING LATTICE BOLTZMANN METHOD. MODARES MECHANICAL ENGINEERING, 16(9), 143-154. SID. https://sid.ir/paper/179768/en

Vancouver: Copy

SHAHRIARI ALIREZA. NUMERICAL SIMULATION OF FREE CONVECTION HEAT TRANSFER OF NANOFLUID IN A WAVYWALL CAVITY WITH SINUSOIDAL TEMPERATURE DISTRIBUTION, USING LATTICE BOLTZMANN METHOD. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(9):143-154. Available from: https://sid.ir/paper/179768/en

IEEE: Copy

ALIREZA SHAHRIARI, “NUMERICAL SIMULATION OF FREE CONVECTION HEAT TRANSFER OF NANOFLUID IN A WAVYWALL CAVITY WITH SINUSOIDAL TEMPERATURE DISTRIBUTION, USING LATTICE BOLTZMANN METHOD,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 9, pp. 143–154, 2016, [Online]. Available: https://sid.ir/paper/179768/en

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