European Physical Journal Plus, Volume (133), No (1), Year (2018-1)

Title : ( Effect of volumetric radiation on natural convection in a cavity with a horizontal fin using the lattice Boltzmann method )

Authors: Hashem Ahmadi Tighchi , masoud sobhani , Javad Abolfazli Esfahani ,

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Abstract

The lattice Boltzmann method (LBM) is presented for the effects of volumetric radiation on laminar natural convection in a square cavity with a horizontal fin on the hot wall containing an absorbing, emitting and scattering medium. Accordingly, the flow, energy and radiative equations are solved by separate distribution functions in the LBM. A parametric study is performed: the effects of Rayleigh number and radiative parameters, such as extinction coefficient and scattering albedo on the flow and temperature fields are investigated. It is found that the isotherms become dense near the cold wall, due to highly participating properties and Rayleigh number. Also, the Nusselt number ratio (NNR) on the clod wall is examined for values of fin length and height. The maximum NNR is found at the longest fin length and near top wall for a given Rayleigh number.

Keywords

, Natural convection, Volumetric radiation, Lattice Boltzmann method, Fin, Nusselt number
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@article{paperid:1102458,
author = {Hashem Ahmadi Tighchi, and Sobhani, Masoud and Abolfazli Esfahani, Javad},
title = {Effect of volumetric radiation on natural convection in a cavity with a horizontal fin using the lattice Boltzmann method},
journal = {European Physical Journal Plus},
year = {2018},
volume = {133},
number = {1},
month = {January},
issn = {2190-5444},
keywords = {Natural convection; Volumetric radiation; Lattice Boltzmann method; Fin; Nusselt number},
}

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%0 Journal Article
%T Effect of volumetric radiation on natural convection in a cavity with a horizontal fin using the lattice Boltzmann method
%A Hashem Ahmadi Tighchi,
%A Sobhani, Masoud
%A Abolfazli Esfahani, Javad
%J European Physical Journal Plus
%@ 2190-5444
%D 2018

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