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Lattice Boltzmann simulation of turbulent natural convection in tall enclosures
Citation
Sajjadi, H and Kefayati, R, Lattice Boltzmann simulation of turbulent natural convection in tall enclosures, Thermal Science, 19, (1) pp. 155-166. ISSN 0354-9836 (2015) [Refereed Article]
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Copyright Statement
Copyright © 2018 thermal science
DOI: doi:10.2298/TSCI120105066S
Abstract
In this paper Lattice Boltzmann simulation of turbulent natural convection with
large eddy simulations in tall enclosures which is filled by air with Pr = 0.71
has been studied. Calculations were performed for high Rayleigh numbers
(Ra = 107
-109
) and aspect ratios change between 0.5 and 2 (0.5 < AR < 2). The
present results are validated by finds of an experimental research at Ra = 1.58·109
.
Effects of the aspect ratios in different Rayleigh numbers are displayed on streamlines,
isotherm counters, vertical velocity and temperature at the middle of the cavity,
local Nusselt number and average Nusselt number. The average Nusselt number
increases with the augmentation of Rayleigh numbers. The increment of the aspect
ratio causes heat transfer to decline in different Rayleigh numbers.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | TURBULENT, convection |
Research Division: | Engineering |
Research Group: | Fluid mechanics and thermal engineering |
Research Field: | Experimental methods in fluid flow, heat and mass transfer |
Objective Division: | Energy |
Objective Group: | Energy transformation |
Objective Field: | Energy transformation not elsewhere classified |
UTAS Author: | Kefayati, R (Dr Gholamreza Kefayati) |
ID Code: | 128026 |
Year Published: | 2015 |
Web of Science® Times Cited: | 27 |
Deposited By: | Engineering |
Deposited On: | 2018-08-28 |
Last Modified: | 2018-10-17 |
Downloads: | 85 View Download Statistics |
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