Simulation of non-Newtonianmolten polymer on natural convection in a sinusoidal heated cavity using FDLBM

Gholamreza Kefayati

doi:10.1016/j.molliq.2014.02.031

Simulation of non-Newtonianmolten polymer on natural convection in a sinusoidal heated cavity using FDLBM

Gholamreza Kefayati

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

In this paper, natural convection of non-Newtonian molten polymer in a cavity with a sinusoidal heated wall has been analyzed by Finite Difference Lattice Boltzmann method (FDLBM). The molten polymer is modeled on power-law non-Newtonian fluid. This study has been performed for the certain pertinent parameters of Rayleigh number (Ra = 10⁴ and 10⁵) and power-law index (n = 0.5-1.5). Results indicate that the innovative FDLBM is an appropriate method for the problem. The augmentation of the power-law index causes heat transfer to drop generally. Moreover, the alteration of power-law index influences the heat transfer at Ra = 10⁵ more than Ra = 10 ⁴ although the difference is marginal.

Original language	English
Pages (from-to)	165-174
Number of pages	10
Journal	JOURNAL OF MOLECULAR LIQUIDS
Volume	195
DOIs	https://doi.org/10.1016/j.molliq.2014.02.031
Publication status	Published - 2014

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title = "Simulation of non-Newtonianmolten polymer on natural convection in a sinusoidal heated cavity using FDLBM",

abstract = "In this paper, natural convection of non-Newtonian molten polymer in a cavity with a sinusoidal heated wall has been analyzed by Finite Difference Lattice Boltzmann method (FDLBM). The molten polymer is modeled on power-law non-Newtonian fluid. This study has been performed for the certain pertinent parameters of Rayleigh number (Ra = 104 and 105) and power-law index (n = 0.5-1.5). Results indicate that the innovative FDLBM is an appropriate method for the problem. The augmentation of the power-law index causes heat transfer to drop generally. Moreover, the alteration of power-law index influences the heat transfer at Ra = 105 more than Ra = 10 4 although the difference is marginal.",

author = "Gholamreza Kefayati",

year = "2014",

doi = "10.1016/j.molliq.2014.02.031",

language = "English",

volume = "195",

pages = "165--174",

journal = "JOURNAL OF MOLECULAR LIQUIDS",

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AU - Kefayati, Gholamreza

PY - 2014

Y1 - 2014

N2 - In this paper, natural convection of non-Newtonian molten polymer in a cavity with a sinusoidal heated wall has been analyzed by Finite Difference Lattice Boltzmann method (FDLBM). The molten polymer is modeled on power-law non-Newtonian fluid. This study has been performed for the certain pertinent parameters of Rayleigh number (Ra = 104 and 105) and power-law index (n = 0.5-1.5). Results indicate that the innovative FDLBM is an appropriate method for the problem. The augmentation of the power-law index causes heat transfer to drop generally. Moreover, the alteration of power-law index influences the heat transfer at Ra = 105 more than Ra = 10 4 although the difference is marginal.

AB - In this paper, natural convection of non-Newtonian molten polymer in a cavity with a sinusoidal heated wall has been analyzed by Finite Difference Lattice Boltzmann method (FDLBM). The molten polymer is modeled on power-law non-Newtonian fluid. This study has been performed for the certain pertinent parameters of Rayleigh number (Ra = 104 and 105) and power-law index (n = 0.5-1.5). Results indicate that the innovative FDLBM is an appropriate method for the problem. The augmentation of the power-law index causes heat transfer to drop generally. Moreover, the alteration of power-law index influences the heat transfer at Ra = 105 more than Ra = 10 4 although the difference is marginal.

U2 - 10.1016/j.molliq.2014.02.031

DO - 10.1016/j.molliq.2014.02.031

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JO - JOURNAL OF MOLECULAR LIQUIDS

JF - JOURNAL OF MOLECULAR LIQUIDS

SN - 0167-7322

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