Coupled Lattice Boltzmann and Meshless Simulation of Natural Convection in the Presence of Volumetric RadiationSource: Journal of Heat Transfer:;2015:;volume( 137 ):;issue: 011::page 111504DOI: 10.1115/1.4030904Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this work, the coupled lattice Boltzmann and direct collocation meshless (LB–DCM) method is introduced to solve the natural convection in the presence of volumetric radiation in irregular geometries. LB–DCM is a hybrid approach based on a common multiscale Boltzmanntype model. Separate particle distribution functions with multirelaxation time (MRT) and lattice Bhatnagar–Gross–Krook (LBGK) models are used to calculate the flow field and the thermal field, respectively. The radiation transfer equation is computed using the meshless method with moving leastsquares (MLS) approximation. The LB–DCM code is first validated by the case of coupled convection–radiation flows in a square cavity. Comparisons show that this combined method is accurate and efficient. Then, the coupled convective and radiative heat transfer in two complex geometries are simulated at various parameters, such as eccentricity, Rayleigh number, and convection–radiation parameter. Numerical results show that the LB–DCM combination is a potential technique for the multifield coupling models, especially with the curved boundary.
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contributor author | Luo, Kang | |
contributor author | Ai, Qing | |
contributor author | Yi, Hong | |
contributor author | Tan, He | |
date accessioned | 2017-05-09T01:20:00Z | |
date available | 2017-05-09T01:20:00Z | |
date issued | 2015 | |
identifier issn | 0022-1481 | |
identifier other | ht_137_11_111504.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/158585 | |
description abstract | In this work, the coupled lattice Boltzmann and direct collocation meshless (LB–DCM) method is introduced to solve the natural convection in the presence of volumetric radiation in irregular geometries. LB–DCM is a hybrid approach based on a common multiscale Boltzmanntype model. Separate particle distribution functions with multirelaxation time (MRT) and lattice Bhatnagar–Gross–Krook (LBGK) models are used to calculate the flow field and the thermal field, respectively. The radiation transfer equation is computed using the meshless method with moving leastsquares (MLS) approximation. The LB–DCM code is first validated by the case of coupled convection–radiation flows in a square cavity. Comparisons show that this combined method is accurate and efficient. Then, the coupled convective and radiative heat transfer in two complex geometries are simulated at various parameters, such as eccentricity, Rayleigh number, and convection–radiation parameter. Numerical results show that the LB–DCM combination is a potential technique for the multifield coupling models, especially with the curved boundary. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Coupled Lattice Boltzmann and Meshless Simulation of Natural Convection in the Presence of Volumetric Radiation | |
type | Journal Paper | |
journal volume | 137 | |
journal issue | 11 | |
journal title | Journal of Heat Transfer | |
identifier doi | 10.1115/1.4030904 | |
journal fristpage | 111504 | |
journal lastpage | 111504 | |
identifier eissn | 1528-8943 | |
tree | Journal of Heat Transfer:;2015:;volume( 137 ):;issue: 011 | |
contenttype | Fulltext |